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Sample Questions
Realexamdumps Providing most updated AWS Certified Developer Associate Question Answers. Here are a few sample questions:
Amazon DVA-C01 Sample Question 1
A developer is working on an ecommerce website. The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available. How can the developer update the application to meet these requirements with MINIMUM changes?
Options:
Answer: E
Amazon DVA-C01 Sample Question 2
Where should an Elastic Beanstalk configuration file named healthcheckur1.config be placed in the application source bundle?
Options:
Answer: E
Amazon DVA-C01 Sample Question 3
A Developer has published an update to an application that is served to a global user base using Amazon CloudFront. After deploying the application, users are not able to see the updated changes. How can the Developer resolve this issue?
Options:
Answer: C Explanation: Explanation: https://docs.aws.ama zon.com/AmazonCloudFront/latest/DeveloperGuide/Invalidation.htmm
Amazon DVA-C01 Sample Question 4
A company is creating an application that will require users to access AWS services and allow them to reset their own passwords. Which of the following would allow the company to manage users and authorization while allowing users to reset their own passwords?
Options:
Answer: D Explanation: Explanation: https://serverles s-stack.com/chapters/cognito-user-pool-vs-identity-pool.htmm
Amazon DVA-C01 Sample Question 5
An existing serverless application processes uploaded image files. The process currently uses a single Lambda function that takes an image file, performs the processing, and stores the file in Amazon S3. Users of the application now require thumbnail generation of the images. Users want to avoid any impact to the time it takes to perform the image uploads. How can thumbnail generation be added to the application, meeting user requirements while minimizing changes to existing code?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/lambda/latest/dg/with-s3-example.htmm
Amazon DVA-C01 Sample Question 6
Which of the following services are key/value stores? Choose 3 answers
Options:
Answer: A, C, F
Amazon DVA-C01 Sample Question 7
A Development team currently supports an application that uses an in-memory store to save accumulated game results. Individual results are stored in a database. As part of migrating to AWS, the team needs to use automatic scaling. The team knows this will yield inconsistent results. Where should the team store these accumulated game results to BEST allow for consistent results without impacting performance?
Options:
Answer: D
Amazon DVA-C01 Sample Question 8
A deployment package uses the AWS CLI to copy files into any S3 bucket in the account, using access keys stored in environment variables. The package is running on EC2 instances, and the instances have been modified to run with an assumed IAM role and a more restrictive policy that allows access to only one bucket. After the change, the Developer logs into the host and still has the ability to write into all of the S3 buckets in that account. What is the MOST likely cause of this situation?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/sdk-for-java/v1/developer -guide/credentials.htmm
Amazon DVA-C01 Sample Question 9
Which of the following programming languages have an officially supported AWS SDK? Choose 2 answers
Options:
Answer: B, E
Amazon DVA-C01 Sample Question 10
Which code snippet below returns the URL of a load balanced web site created in CloudFormation with an AWS::ElasticLoadBalancing::LoadBalancer resource name "ElasticLoad Balancer"?
Options:
Answer: A Explanation: Explanation: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-functio n-reference-getatt.htmm
Amazon DVA-C01 Sample Question 11
Developer is creating an AWS Lambda function to process a stream of data from an Amazon Kinesis Data Stream. When the Lambda function parses the data and encounters a missing field, it exits the function with an error. The function is generating duplicate records from the Kinesis stream. When the Developer looks at the stream output without the Lambda function, there are no duplicate records. What is the reason for the duplicates?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/lambda/latest/dg/with-kinesis.htmm
Amazon DVA-C01 Sample Question 12
A Developer decides lo store highly secure data in Amazon S3 and wants to implement server-side encryption (SSF) with granular control of who can access the master key Company policy requires that the master key be created, rotated, and disabled easily when needed, all for security reasons. Which solution should be used to moot these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 13
An application stores images in an S3 bucket. Amazon S3 event notifications are used to trigger a Lambda function that resizes the images. Processing each image takes less than a second. How will AWS Lambda handle the additional traffic?
Options:
Answer: B
Amazon DVA-C01 Sample Question 14
A company is using AWS Elastic Beanstalk to deploy a three-tier application. The application uses an Amazon RDS DB instance as the database tier. The com wants to decouple the DB instance from the Elastic Beanstalk environment. Which combination of steps should a developer take to meet this requirement? (Select TWO.)
Options:
Answer: B, F
Amazon DVA-C01 Sample Question 15
An application displays a status dashboard. The status is updated by 1 KB messages from an SQS queue. Although the status changes infrequently, the Developer must minimize the time between the message arrival in the queue and the dashboard update. What technique provides the shortest delay in updating the dashboard?
Options:
Answer: A Explanation: Explanation: https://docs.aws.ama zon.com/ko_kr/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-short-and-long-polling.html#sqs-short-long-polling-differencet
Amazon DVA-C01 Sample Question 16
A Developer is writing transactions into a DynamoDB table called âSystemUpdatesâ that has 5 write capacity units. Which option has the highest read throughput?
Options:
Answer: C
Amazon DVA-C01 Sample Question 17
A company needs to ingest terabytes of data each hour from thousands of sources that are delivered almost continually throughout the day. The volume of messages generated varies over the course of the day. Messages must be delivered in real time for fraud detection and live operational dashboards. Which approach will meet these requirements?
Options:
Answer: D Explanation: Explanation: https://aws.amazon.c om/streaming-data/
Amazon DVA-C01 Sample Question 18
A global company has an application running on Amazon EC2 instances that serves image files from Amazon S3. User requests from the browser are causing high traffic, which results in degraded performance. Which optimization solution should a Developer implement to increase application performance?
Options:
Answer: C
Amazon DVA-C01 Sample Question 19
An application running on multiple Amazon EC2 instances pulls messages ...SQS queue. A requirement for the application is that all messages must be encrypted at rest. Developers are instructed to use methods that allow for centralized .. possible support requirements whenever possible. Which of the following solution supports these requirements?
Options:
Answer: D
Amazon DVA-C01 Sample Question 20
A developer has written a multi-threaded application that is running on a fleet of Amazon EC2 instances. The operations team has requested a graphical method to monitor the number of running threads over time. What is the MOST efficient way to fulfill this request?
Options:
Answer: E
Amazon DVA-C01 Sample Question 21
You are inserting 1000 new items every second in a DynamoDB table. Once an hour these items are analyzed and then are no longer needed. You need to minimize provisioned throughput, storage, and API calls. Given these requirements, what is the most efficient way to manage these Items after the analysis?
Options:
Answer: D
Amazon DVA-C01 Sample Question 22
A developer is planning to use an Amazon API Gateway and AWS Lambda to provide a REST API The developer will have three distinct environments to manage development, test, and production. How should the application be deployed while minimizing the number of resources to manage?
Options:
Answer: D
Amazon DVA-C01 Sample Question 23
A company is migrating a single-server, on-premises web application to AWS. The company intends to use multiple servers behind an Elastic Load Balancer (ELB) to balance the load, and will also store session data in memory on the web server. The company does not want to lose that session data if a server fails or goes offline, and it wants to minimize userâs downtime. Where should the company move session data to MOST effectively reduce downtime and make usersâ session data more fault tolerant?
Options:
Answer: B
Amazon DVA-C01 Sample Question 24
A developer wants the ability to roll back to a previous version of an AWS Lambda function in the event of errors caused by a new deployment. How can the developer achieve this with MINIMAL impact on users?
Options:
Answer: B
Amazon DVA-C01 Sample Question 25
Your application is trying to upload a 6 GB file to Simple Storage Service and receive a âYour proposed upload exceeds the maximum allowed object size." error message. What is a possible solution for this?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/Amaz onS3/latest/dev/mpuoverview.htmm
Amazon DVA-C01 Sample Question 26
A Developer writes an AWS Lambda function and uploads the code in a .ZIP file to Amazon S3. The Developer makes changes to the code and uploads a new .ZIP file to Amazon S3. However, Lambda executes the earlier code. How can the Developer fix this in the LEAST disruptive way?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon .com/cli/latest/reference/lambda/update-function-code.htmm
Amazon DVA-C01 Sample Question 27
An application contains two components one component to handle HI IP requests, and another component to handle background processing tasks Bach component must scale independently The developer wants to deploy this application using AWS Elastic Beanstalk. How should this application be deployed, based on these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 28
A Developer is making changes to a custom application that is currently using AWS Elastic Beanstalk. After the Developer completes the changes, what solutions will update the Elastic Beanstalk environment with the new application version? (Choose two.)
Options:
Answer: C, E
Amazon DVA-C01 Sample Question 29
Which DynamoDB limits can be raised by contacting AWS support? Choose 2 answers
Options:
Answer: C, E Explanation: Explanation: https://docs.aws.amazon.com/amazondynamodb/l atest/developerguide/Limits.htmm
Amazon DVA-C01 Sample Question 30
A Developer must re-implement the business logic for an order fulfilment system. The business logic has to make requests to multiple vendors to decide where to purchase an item. The whole process can take up to a week to complete. What is the MOST efficient and SIMPLEST way to implement a system that meets these requirements?
Options:
Answer: A Explanation: Explanation: https://aws.amazon.com/step-functions/
Amazon DVA-C01 Sample Question 31
EC2 instances are launched from Amazon Machine images (AMIs). A given public AMI can:
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/usingsharedamis-finding.htmm
Amazon DVA-C01 Sample Question 32
A developer wants to secure sensitive configuration date such as passwords, database strings, and application license codes. Access to this sensitive information must be tracked for future audit purposes.
Options:
Answer: C
Amazon DVA-C01 Sample Question 33
A Developer is creating a mobile application with a limited budget. The solution requires a scalable service that will enable customers to sign up and authenticate into the mobile application while using the organizationâs current SAML 2.0 identity provider. Which AWS service should be used to meet these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 34
company needs a fully-managed source control service that will work in AWS. The service must ensure that revision control synchronizes multiple distributed repositories by exchanging sets of changes peer-to-peer. All users need to work productively even when not connected to a network. Which source control service should be used?
Options:
Answer: D
Amazon DVA-C01 Sample Question 35
In a multi-container Docker environment in AWS Elastic Beanstalk, what is required to configure container instances in the environment?
Options:
Answer: A Explanation: Reference: [Reference: https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_docker_ecs.html, , , , ]
Amazon DVA-C01 Sample Question 36
A Developer is storing sensitive documents in Amazon S3 that will require encryption at rest. The encryption keys must be rotated annually, at least. What is the easiest way to achieve this?
Options:
Answer: C Explanation: Explanation: https://docs.a ws.amazon.com/kms/latest/developerguide/rotate-keys.htmlhttps://docs.aws.amazon.com/kms/latest/developerguide/custom-key-store-overview.htm lYou can use the same techniques to view and manage the CMKs in your custom key store that you use for CMKs in the AWS KMS key store. You can control access with IAM and key policies, create tags and aliases, enable and disable the CMKs, and schedule key deletion. You can use the CMKs for cryptographic operations and use them with AWS services that integrate with AWS KMS. However, you cannot enable automatic key rotation and you cannot import key material into a CMK in a custom key store.Q: Can I rotate my keys? Yes. You can choose to have AWS KMS automatically rotate CMKs every year, provided that those keys were generated within AWS KMS HSMs. Automatic key rotation is not supported for imported keys, asymmetric keys, or keys generated in an AWS CloudHSM cluster using the AWS KMS custom key store feature. If you choose to import keys to AWS KMS or asymmetric keys or use a custom key store, you can manually rotate them by creating a new CMK and mapping an existing key alias from the old CMK to the new CMK. https://aws.amazon.com/kms/faqs/
Amazon DVA-C01 Sample Question 37
A Developer is migrating an on-premises application to AWS. The application currently takes user uploads and saves them to a local directory on the server. All uploads must be saved and made immediately available to all instances in an Auto scaling group. Which approach will meet these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 38
A development team is using AWS Elastic Beanstalk to deploy a two-tier application that consists of a load-balanced web tier and an Amazon RDS database tier in production. The team would like to separate the RDS instance from the Elastic Beanstalk. How can this be accomplished?
Options:
Answer: D Explanation: Explanation: https://aws.amazon.com/premiumsuppo rt/knowledge-center/decouple-rds-from-beanstalk/
Amazon DVA-C01 Sample Question 39
A developer is working on a Python application that runs on Amazon EC2 instances. The developer wants to enable tracing of application requests to debug performance issues in the code. Which combination of actions should the developer take to achieve this goal? (Select TWO.)
Options:
Answer: B, F
Amazon DVA-C01 Sample Question 40
A Developer must analyze performance issues with production-distributed applications written as AWS Lambda functions. These distributed Lambda applications invoke other components that make up the applications. How should the Developer identify and troubleshoot the root cause of the performance issues in production?
Options:
Answer: C Explanation: Explanation: https://aws.amazon.com/blogs/developer/new-analyze-and-debug-distributed-applications-interactively-using-aws-x-ray-analytics/
Amazon DVA-C01 Sample Question 41
What type of block cipher does Amazon S3 offer for server side encryption?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/AmazonS3/latest/dev/serv-side-encryption.htmm
Amazon DVA-C01 Sample Question 42
A developer is receiving an intermittent ProvisionedThroughputExceededException error from an application that is based on Amazon DynamoDB. According to the Amazon CloudWatch metrics for the table, the application is not exceeding the provisioned throughput What could be the cause of the issue?
Options:
Answer: C
Amazon DVA-C01 Sample Question 43
A Developer is writing a Linux-based application to run on AWS Elastic Beanstalk. Application requirements state that the application must maintain full capacity during updates while minimizing cost. Which type of Elastic Beanstalk deployment policy should the Developer specify for the environment?
Options:
Answer: D Explanation: Explanation: https://docs.aws.amazon.co m/elasticbeanstalk/latest/dg/using-features.rolling-version-deploy.htmm
Amazon DVA-C01 Sample Question 44
A customer wants to deploy its source code on an AWS Elastic Beanstalk environment. The customer needs to perform deployment with minimal outage and should only use existing instances to retain application access log. What deployment policy would satisfy these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 45
A company has three AWS Lambda functions that are written in Node js The Lambda functions include a mix of custom code and open-source modules When bugs are occasionally detected in the open-source modules, all three Lambda functions must be patched. What is the MOST operationally efficient solution to deploy a patched open-source library for all three Lambda functions?
Options:
Answer: E
Amazon DVA-C01 Sample Question 46
A developer is writing an application in AWS Lambda To simplify testing and deployments, the developer needs the database connection string to be easily changed without modifying the Lambda code. How can this requirement be met?
Options:
Answer: B
Amazon DVA-C01 Sample Question 47
Company A has an S3 bucket containing premier content that they intend to make available to only paid subscribers of their website. The S3 bucket currently has default permissions of all objects being private to prevent inadvertent exposure of the premier content to non-paying website visitors. How can Company A provide only paid subscribers the ability to download a premier content file in the S3 bucket?
Options:
Answer: C
Amazon DVA-C01 Sample Question 48
n application running on an Amazon Linux EC2 instance needs to manage the AWS infrastructure. How can the EC2 instance be configured to make AWS API calls securely?
Options:
Answer: D
Amazon DVA-C01 Sample Question 49
What are the steps to using the AWS CLI to launch a templatized serverless application?
Options:
Answer: C Explanation: Explanation: https://docs.aws. amazon.com/cli/latest/reference/cloudformation/package.htmm
Amazon DVA-C01 Sample Question 50
An application is real-time processing millions of events that are received through an API. What service could be used to allow multiple consumers to process the data concurrently and MOST cost-effectively?
Options:
Answer: E
Amazon DVA-C01 Sample Question 51
Which statements about DynamoDB are true? Choose 2 answers
Options:
Answer: B, D
Amazon DVA-C01 Sample Question 52
A Developer wants to enable AWS X-Ray for a secure application that runs in an Amazon ECS environment. What combination of steps will enable X-Ray? (Select THREE.)
Options:
Answer: A, B, F Explanation: Explanation: https://doc s.aws.amazon.com/xray/latest/devguide/xray-daemon-ecs.htmlhttps://docs.aws.amazon.com/xray/latest/devguide/scorekeep-ecs.htmm
Amazon DVA-C01 Sample Question 53
The development team is working on an API that will be served from Amazon API gateway. The API will be served from three environments: development, test, and production. The API Gateway is configured to use 237 GB of cache in all three stages. Which is the MOST cost-efficient deployment strategy?
Options:
Answer: E
Amazon DVA-C01 Sample Question 54
A game stores user game data in an Amazon DynamoDB table. Individual users should not have access to other usersâ game data. How can this be accomplished?
Options:
Answer: C
Amazon DVA-C01 Sample Question 55
A developer has written an application that runs on Amazon EC2 instances. The developer is adding functionality for the application to write objects to an Amazon S3 bucket Which policy must the developer modify to allow the instances to write these objects?
Options:
Answer: B
Amazon DVA-C01 Sample Question 56
A company is using Amazon RDS MySQL instances for its application database tier and Apache Tomcat servers for its web tier. Most of the database queries from web applications are repeated read requests. Use of which AWS service would increase in performance by adding in-memory store for repeated read queries?
Options:
Answer: D
Amazon DVA-C01 Sample Question 57
A company needs to distribute firmware updates to its customers around the world. Which service will allow easy and secure control of the access to the downloads at the lowest cost?
Options:
Answer: A Explanation: Explanation: https://aws.amazon.com/bl ogs/networking-and-content-delivery/amazon-s3-amazon-cloudfront-a-match-made-in-the-cloud/
Amazon DVA-C01 Sample Question 58
A Developer has created a Lambda function and is finding that the function is taking longer to complete than expected. After some debugging, the Developer has discovered that increasing compute capacity would improve performance. How can the Developer increase the Lambda compute resources?
Options:
Answer: E
Amazon DVA-C01 Sample Question 59
A developer Is working with a Docker application that needs to be quickly deployed using AWS without changing the infrastructure or configuring health checks. The application should be configured so that changes and updates can be made automatically without any downtime Which solution will meet these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 60
Company C has recently launched an online commerce site for bicycles on AWS. They have a "Product" DynamoDB table that stores details for each bicycle, such as, manufacturer, color, price, quantity and size to display in the online store. Due to customer demand, they want to include an image for each bicycle along with the existing details. Which approach below provides the least impact to provisioned throughput on the "Product" table?
Options:
Answer: D Explanation: Explanation: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-use-s3-too.html #bp-use-s3-too-large-valuesFor example, consider the ProductCatalog table in the Creating Tables and Loading Data for Code Examples in DynamoDB section. Items in this table store information about item price, description, book authors, and dimensions for other products. If you wanted to store an image of each product that was too large to fit in an item, you could store the images in Amazon S3 instead of in DynamoDB.
Amazon DVA-C01 Sample Question 61
n on-premises application makes repeated calls to store files to Amazon S3. As usage of the application has increased, âLimitExceededâ errors are being logged. What should be changed to fix this error?
Options:
Answer: B
Amazon DVA-C01 Sample Question 62
A developer has a legacy application that is hosted on-premises Other applications hosted on AWS depend on the on-premises application for proper functioning In case of any application errors, the developer wants to be able to use Amazon CloudWatch to monitor and troubleshoot all applications from one place. How can the developer accomplish this?
Options:
Answer: B Explanation: Reference: [Reference: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-onpremise.Html, ]
Amazon DVA-C01 Sample Question 63
A developer has created a Node js web application on a local development machine. The developer wants to use AWS technology to host the website. The developer needs a solution that requires the least possible operational overhead and no code changes. Which AWS service should the developer use to meet these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 64
For a deployment using AWS CodeDeploy, what is the run order of the hooks for in-place deployments?
Options:
Answer: C
Amazon DVA-C01 Sample Question 65
A company maintains an application responsible for processing several thousand external callbacks each day. The companyâs System administrators want to know how many callbacks are being received on a rolling basis, and they want this data available for 10 days. The company also wants the ability to issue automated alerts if the number of callbacks exceeds the defined thresholds. What is the MOST cost-effective way to address the need to track and alert on these statistics?
Options:
Answer: E
Amazon DVA-C01 Sample Question 66
A company has a serverless application that uses AWS Lambda functions and AWS Systems Manager parameters to store configuration data. The company....... the Lambda functions inside the VPC and into private subnets. The Lambda functions are now producing errors in their attempts to access Systems Manager parameters. Which solution will allow the Lambda functions to access Systems Manager parameters inside the VPC?
Options:
Answer: C
Amazon DVA-C01 Sample Question 67
A Developer is creating a Lambda function and will be using external libraries that are not included in the standard Lambda libraries. What action would minimize the Lambda compute time consumed?
Options:
Answer: E
Amazon DVA-C01 Sample Question 68
A developer is migrating a Windows-based legacy application from on premises to AWS. The application will run on Amazon EC2 instances that run Amazon Linux. The application stores a large number of files in an NFS drive. The migration solution must minimize downtime and application code changes. Which solution should the developer use to migrate the application data?
Options:
Answer: D
Amazon DVA-C01 Sample Question 69
A developer is working on an ecommerce website. The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available. How can the developer update the application to meet these requirements with MINIMUM changes?
Options:
Answer: E
Amazon DVA-C01 Sample Question 70
Where should an Elastic Beanstalk configuration file named healthcheckur1.config be placed in the application source bundle?
Options:
Answer: E
Amazon DVA-C01 Sample Question 71
A Developer has published an update to an application that is served to a global user base using Amazon CloudFront. After deploying the application, users are not able to see the updated changes. How can the Developer resolve this issue?
Options:
Answer: C Explanation: Explanation: https://docs.aws.ama zon.com/AmazonCloudFront/latest/DeveloperGuide/Invalidation.htmm
Amazon DVA-C01 Sample Question 72
A company is creating an application that will require users to access AWS services and allow them to reset their own passwords. Which of the following would allow the company to manage users and authorization while allowing users to reset their own passwords?
Options:
Answer: D Explanation: Explanation: https://serverles s-stack.com/chapters/cognito-user-pool-vs-identity-pool.htmm
Amazon DVA-C01 Sample Question 73
An existing serverless application processes uploaded image files. The process currently uses a single Lambda function that takes an image file, performs the processing, and stores the file in Amazon S3. Users of the application now require thumbnail generation of the images. Users want to avoid any impact to the time it takes to perform the image uploads. How can thumbnail generation be added to the application, meeting user requirements while minimizing changes to existing code?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/lambda/latest/dg/with-s3-example.htmm
Amazon DVA-C01 Sample Question 74
Which of the following services are key/value stores? Choose 3 answers
Options:
Answer: A, C, F
Amazon DVA-C01 Sample Question 75
A Development team currently supports an application that uses an in-memory store to save accumulated game results. Individual results are stored in a database. As part of migrating to AWS, the team needs to use automatic scaling. The team knows this will yield inconsistent results. Where should the team store these accumulated game results to BEST allow for consistent results without impacting performance?
Options:
Answer: D
Amazon DVA-C01 Sample Question 76
A deployment package uses the AWS CLI to copy files into any S3 bucket in the account, using access keys stored in environment variables. The package is running on EC2 instances, and the instances have been modified to run with an assumed IAM role and a more restrictive policy that allows access to only one bucket. After the change, the Developer logs into the host and still has the ability to write into all of the S3 buckets in that account. What is the MOST likely cause of this situation?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/sdk-for-java/v1/developer -guide/credentials.htmm
Amazon DVA-C01 Sample Question 77
Which of the following programming languages have an officially supported AWS SDK? Choose 2 answers
Options:
Answer: B, E
Amazon DVA-C01 Sample Question 78
Which code snippet below returns the URL of a load balanced web site created in CloudFormation with an AWS::ElasticLoadBalancing::LoadBalancer resource name "ElasticLoad Balancer"?
Options:
Answer: A Explanation: Explanation: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-functio n-reference-getatt.htmm
Amazon DVA-C01 Sample Question 79
Developer is creating an AWS Lambda function to process a stream of data from an Amazon Kinesis Data Stream. When the Lambda function parses the data and encounters a missing field, it exits the function with an error. The function is generating duplicate records from the Kinesis stream. When the Developer looks at the stream output without the Lambda function, there are no duplicate records. What is the reason for the duplicates?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/lambda/latest/dg/with-kinesis.htmm
Amazon DVA-C01 Sample Question 80
A Developer decides lo store highly secure data in Amazon S3 and wants to implement server-side encryption (SSF) with granular control of who can access the master key Company policy requires that the master key be created, rotated, and disabled easily when needed, all for security reasons. Which solution should be used to moot these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 81
An application stores images in an S3 bucket. Amazon S3 event notifications are used to trigger a Lambda function that resizes the images. Processing each image takes less than a second. How will AWS Lambda handle the additional traffic?
Options:
Answer: B
Amazon DVA-C01 Sample Question 82
A company is using AWS Elastic Beanstalk to deploy a three-tier application. The application uses an Amazon RDS DB instance as the database tier. The com wants to decouple the DB instance from the Elastic Beanstalk environment. Which combination of steps should a developer take to meet this requirement? (Select TWO.)
Options:
Answer: B, F
Amazon DVA-C01 Sample Question 83
An application displays a status dashboard. The status is updated by 1 KB messages from an SQS queue. Although the status changes infrequently, the Developer must minimize the time between the message arrival in the queue and the dashboard update. What technique provides the shortest delay in updating the dashboard?
Options:
Answer: A Explanation: Explanation: https://docs.aws.ama zon.com/ko_kr/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-short-and-long-polling.html#sqs-short-long-polling-differencet
Amazon DVA-C01 Sample Question 84
A Developer is writing transactions into a DynamoDB table called âSystemUpdatesâ that has 5 write capacity units. Which option has the highest read throughput?
Options:
Answer: C
Amazon DVA-C01 Sample Question 85
A company needs to ingest terabytes of data each hour from thousands of sources that are delivered almost continually throughout the day. The volume of messages generated varies over the course of the day. Messages must be delivered in real time for fraud detection and live operational dashboards. Which approach will meet these requirements?
Options:
Answer: D Explanation: Explanation: https://aws.amazon.c om/streaming-data/
Amazon DVA-C01 Sample Question 86
A global company has an application running on Amazon EC2 instances that serves image files from Amazon S3. User requests from the browser are causing high traffic, which results in degraded performance. Which optimization solution should a Developer implement to increase application performance?
Options:
Answer: C
Amazon DVA-C01 Sample Question 87
An application running on multiple Amazon EC2 instances pulls messages ...SQS queue. A requirement for the application is that all messages must be encrypted at rest. Developers are instructed to use methods that allow for centralized .. possible support requirements whenever possible. Which of the following solution supports these requirements?
Options:
Answer: D
Amazon DVA-C01 Sample Question 88
A developer has written a multi-threaded application that is running on a fleet of Amazon EC2 instances. The operations team has requested a graphical method to monitor the number of running threads over time. What is the MOST efficient way to fulfill this request?
Options:
Answer: E
Amazon DVA-C01 Sample Question 89
You are inserting 1000 new items every second in a DynamoDB table. Once an hour these items are analyzed and then are no longer needed. You need to minimize provisioned throughput, storage, and API calls. Given these requirements, what is the most efficient way to manage these Items after the analysis?
Options:
Answer: D
Amazon DVA-C01 Sample Question 90
A developer is planning to use an Amazon API Gateway and AWS Lambda to provide a REST API The developer will have three distinct environments to manage development, test, and production. How should the application be deployed while minimizing the number of resources to manage?
Options:
Answer: D
Amazon DVA-C01 Sample Question 91
A company is migrating a single-server, on-premises web application to AWS. The company intends to use multiple servers behind an Elastic Load Balancer (ELB) to balance the load, and will also store session data in memory on the web server. The company does not want to lose that session data if a server fails or goes offline, and it wants to minimize userâs downtime. Where should the company move session data to MOST effectively reduce downtime and make usersâ session data more fault tolerant?
Options:
Answer: B
Amazon DVA-C01 Sample Question 92
A developer wants the ability to roll back to a previous version of an AWS Lambda function in the event of errors caused by a new deployment. How can the developer achieve this with MINIMAL impact on users?
Options:
Answer: B
Amazon DVA-C01 Sample Question 93
Your application is trying to upload a 6 GB file to Simple Storage Service and receive a âYour proposed upload exceeds the maximum allowed object size." error message. What is a possible solution for this?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/Amaz onS3/latest/dev/mpuoverview.htmm
Amazon DVA-C01 Sample Question 94
A Developer writes an AWS Lambda function and uploads the code in a .ZIP file to Amazon S3. The Developer makes changes to the code and uploads a new .ZIP file to Amazon S3. However, Lambda executes the earlier code. How can the Developer fix this in the LEAST disruptive way?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon .com/cli/latest/reference/lambda/update-function-code.htmm
Amazon DVA-C01 Sample Question 95
An application contains two components one component to handle HI IP requests, and another component to handle background processing tasks Bach component must scale independently The developer wants to deploy this application using AWS Elastic Beanstalk. How should this application be deployed, based on these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 96
A Developer is making changes to a custom application that is currently using AWS Elastic Beanstalk. After the Developer completes the changes, what solutions will update the Elastic Beanstalk environment with the new application version? (Choose two.)
Options:
Answer: C, E
Amazon DVA-C01 Sample Question 97
Which DynamoDB limits can be raised by contacting AWS support? Choose 2 answers
Options:
Answer: C, E Explanation: Explanation: https://docs.aws.amazon.com/amazondynamodb/l atest/developerguide/Limits.htmm
Amazon DVA-C01 Sample Question 98
A Developer must re-implement the business logic for an order fulfilment system. The business logic has to make requests to multiple vendors to decide where to purchase an item. The whole process can take up to a week to complete. What is the MOST efficient and SIMPLEST way to implement a system that meets these requirements?
Options:
Answer: A Explanation: Explanation: https://aws.amazon.com/step-functions/
Amazon DVA-C01 Sample Question 99
EC2 instances are launched from Amazon Machine images (AMIs). A given public AMI can:
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/usingsharedamis-finding.htmm
Amazon DVA-C01 Sample Question 100
A developer wants to secure sensitive configuration date such as passwords, database strings, and application license codes. Access to this sensitive information must be tracked for future audit purposes.
Options:
Answer: C
Amazon DVA-C01 Sample Question 101
A Developer is creating a mobile application with a limited budget. The solution requires a scalable service that will enable customers to sign up and authenticate into the mobile application while using the organizationâs current SAML 2.0 identity provider. Which AWS service should be used to meet these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 102
company needs a fully-managed source control service that will work in AWS. The service must ensure that revision control synchronizes multiple distributed repositories by exchanging sets of changes peer-to-peer. All users need to work productively even when not connected to a network. Which source control service should be used?
Options:
Answer: D
Amazon DVA-C01 Sample Question 103
In a multi-container Docker environment in AWS Elastic Beanstalk, what is required to configure container instances in the environment?
Options:
Answer: A Explanation: Reference: [Reference: https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_docker_ecs.html, , , , ]
Amazon DVA-C01 Sample Question 104
A Developer is storing sensitive documents in Amazon S3 that will require encryption at rest. The encryption keys must be rotated annually, at least. What is the easiest way to achieve this?
Options:
Answer: C Explanation: Explanation: https://docs.a ws.amazon.com/kms/latest/developerguide/rotate-keys.htmlhttps://docs.aws.amazon.com/kms/latest/developerguide/custom-key-store-overview.htm lYou can use the same techniques to view and manage the CMKs in your custom key store that you use for CMKs in the AWS KMS key store. You can control access with IAM and key policies, create tags and aliases, enable and disable the CMKs, and schedule key deletion. You can use the CMKs for cryptographic operations and use them with AWS services that integrate with AWS KMS. However, you cannot enable automatic key rotation and you cannot import key material into a CMK in a custom key store.Q: Can I rotate my keys? Yes. You can choose to have AWS KMS automatically rotate CMKs every year, provided that those keys were generated within AWS KMS HSMs. Automatic key rotation is not supported for imported keys, asymmetric keys, or keys generated in an AWS CloudHSM cluster using the AWS KMS custom key store feature. If you choose to import keys to AWS KMS or asymmetric keys or use a custom key store, you can manually rotate them by creating a new CMK and mapping an existing key alias from the old CMK to the new CMK. https://aws.amazon.com/kms/faqs/
Amazon DVA-C01 Sample Question 105
A Developer is migrating an on-premises application to AWS. The application currently takes user uploads and saves them to a local directory on the server. All uploads must be saved and made immediately available to all instances in an Auto scaling group. Which approach will meet these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 106
A development team is using AWS Elastic Beanstalk to deploy a two-tier application that consists of a load-balanced web tier and an Amazon RDS database tier in production. The team would like to separate the RDS instance from the Elastic Beanstalk. How can this be accomplished?
Options:
Answer: D Explanation: Explanation: https://aws.amazon.com/premiumsuppo rt/knowledge-center/decouple-rds-from-beanstalk/
Amazon DVA-C01 Sample Question 107
A developer is working on a Python application that runs on Amazon EC2 instances. The developer wants to enable tracing of application requests to debug performance issues in the code. Which combination of actions should the developer take to achieve this goal? (Select TWO.)
Options:
Answer: B, F
Amazon DVA-C01 Sample Question 108
A Developer must analyze performance issues with production-distributed applications written as AWS Lambda functions. These distributed Lambda applications invoke other components that make up the applications. How should the Developer identify and troubleshoot the root cause of the performance issues in production?
Options:
Answer: C Explanation: Explanation: https://aws.amazon.com/blogs/developer/new-analyze-and-debug-distributed-applications-interactively-using-aws-x-ray-analytics/
Amazon DVA-C01 Sample Question 109
What type of block cipher does Amazon S3 offer for server side encryption?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/AmazonS3/latest/dev/serv-side-encryption.htmm
Amazon DVA-C01 Sample Question 110
A developer is receiving an intermittent ProvisionedThroughputExceededException error from an application that is based on Amazon DynamoDB. According to the Amazon CloudWatch metrics for the table, the application is not exceeding the provisioned throughput What could be the cause of the issue?
Options:
Answer: C
Amazon DVA-C01 Sample Question 111
A Developer is writing a Linux-based application to run on AWS Elastic Beanstalk. Application requirements state that the application must maintain full capacity during updates while minimizing cost. Which type of Elastic Beanstalk deployment policy should the Developer specify for the environment?
Options:
Answer: D Explanation: Explanation: https://docs.aws.amazon.co m/elasticbeanstalk/latest/dg/using-features.rolling-version-deploy.htmm
Amazon DVA-C01 Sample Question 112
A customer wants to deploy its source code on an AWS Elastic Beanstalk environment. The customer needs to perform deployment with minimal outage and should only use existing instances to retain application access log. What deployment policy would satisfy these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 113
A company has three AWS Lambda functions that are written in Node js The Lambda functions include a mix of custom code and open-source modules When bugs are occasionally detected in the open-source modules, all three Lambda functions must be patched. What is the MOST operationally efficient solution to deploy a patched open-source library for all three Lambda functions?
Options:
Answer: E
Amazon DVA-C01 Sample Question 114
A developer is writing an application in AWS Lambda To simplify testing and deployments, the developer needs the database connection string to be easily changed without modifying the Lambda code. How can this requirement be met?
Options:
Answer: B
Amazon DVA-C01 Sample Question 115
Company A has an S3 bucket containing premier content that they intend to make available to only paid subscribers of their website. The S3 bucket currently has default permissions of all objects being private to prevent inadvertent exposure of the premier content to non-paying website visitors. How can Company A provide only paid subscribers the ability to download a premier content file in the S3 bucket?
Options:
Answer: C
Amazon DVA-C01 Sample Question 116
n application running on an Amazon Linux EC2 instance needs to manage the AWS infrastructure. How can the EC2 instance be configured to make AWS API calls securely?
Options:
Answer: D
Amazon DVA-C01 Sample Question 117
What are the steps to using the AWS CLI to launch a templatized serverless application?
Options:
Answer: C Explanation: Explanation: https://docs.aws. amazon.com/cli/latest/reference/cloudformation/package.htmm
Amazon DVA-C01 Sample Question 118
An application is real-time processing millions of events that are received through an API. What service could be used to allow multiple consumers to process the data concurrently and MOST cost-effectively?
Options:
Answer: E
Amazon DVA-C01 Sample Question 119
Which statements about DynamoDB are true? Choose 2 answers
Options:
Answer: B, D
Amazon DVA-C01 Sample Question 120
A Developer wants to enable AWS X-Ray for a secure application that runs in an Amazon ECS environment. What combination of steps will enable X-Ray? (Select THREE.)
Options:
Answer: A, B, F Explanation: Explanation: https://doc s.aws.amazon.com/xray/latest/devguide/xray-daemon-ecs.htmlhttps://docs.aws.amazon.com/xray/latest/devguide/scorekeep-ecs.htmm
Amazon DVA-C01 Sample Question 121
The development team is working on an API that will be served from Amazon API gateway. The API will be served from three environments: development, test, and production. The API Gateway is configured to use 237 GB of cache in all three stages. Which is the MOST cost-efficient deployment strategy?
Options:
Answer: E
Amazon DVA-C01 Sample Question 122
A game stores user game data in an Amazon DynamoDB table. Individual users should not have access to other usersâ game data. How can this be accomplished?
Options:
Answer: C
Amazon DVA-C01 Sample Question 123
A developer has written an application that runs on Amazon EC2 instances. The developer is adding functionality for the application to write objects to an Amazon S3 bucket Which policy must the developer modify to allow the instances to write these objects?
Options:
Answer: B
Amazon DVA-C01 Sample Question 124
A company is using Amazon RDS MySQL instances for its application database tier and Apache Tomcat servers for its web tier. Most of the database queries from web applications are repeated read requests. Use of which AWS service would increase in performance by adding in-memory store for repeated read queries?
Options:
Answer: D
Amazon DVA-C01 Sample Question 125
A company needs to distribute firmware updates to its customers around the world. Which service will allow easy and secure control of the access to the downloads at the lowest cost?
Options:
Answer: A Explanation: Explanation: https://aws.amazon.com/bl ogs/networking-and-content-delivery/amazon-s3-amazon-cloudfront-a-match-made-in-the-cloud/
Amazon DVA-C01 Sample Question 126
A Developer has created a Lambda function and is finding that the function is taking longer to complete than expected. After some debugging, the Developer has discovered that increasing compute capacity would improve performance. How can the Developer increase the Lambda compute resources?
Options:
Answer: E
Amazon DVA-C01 Sample Question 127
A developer Is working with a Docker application that needs to be quickly deployed using AWS without changing the infrastructure or configuring health checks. The application should be configured so that changes and updates can be made automatically without any downtime Which solution will meet these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 128
Company C has recently launched an online commerce site for bicycles on AWS. They have a "Product" DynamoDB table that stores details for each bicycle, such as, manufacturer, color, price, quantity and size to display in the online store. Due to customer demand, they want to include an image for each bicycle along with the existing details. Which approach below provides the least impact to provisioned throughput on the "Product" table?
Options:
Answer: D Explanation: Explanation: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-use-s3-too.html #bp-use-s3-too-large-valuesFor example, consider the ProductCatalog table in the Creating Tables and Loading Data for Code Examples in DynamoDB section. Items in this table store information about item price, description, book authors, and dimensions for other products. If you wanted to store an image of each product that was too large to fit in an item, you could store the images in Amazon S3 instead of in DynamoDB.
Amazon DVA-C01 Sample Question 129
n on-premises application makes repeated calls to store files to Amazon S3. As usage of the application has increased, âLimitExceededâ errors are being logged. What should be changed to fix this error?
Options:
Answer: B
Amazon DVA-C01 Sample Question 130
A developer has a legacy application that is hosted on-premises Other applications hosted on AWS depend on the on-premises application for proper functioning In case of any application errors, the developer wants to be able to use Amazon CloudWatch to monitor and troubleshoot all applications from one place. How can the developer accomplish this?
Options:
Answer: B Explanation: Reference: [Reference: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-onpremise.Html, ]
Amazon DVA-C01 Sample Question 131
A developer has created a Node js web application on a local development machine. The developer wants to use AWS technology to host the website. The developer needs a solution that requires the least possible operational overhead and no code changes. Which AWS service should the developer use to meet these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 132
For a deployment using AWS CodeDeploy, what is the run order of the hooks for in-place deployments?
Options:
Answer: C
Amazon DVA-C01 Sample Question 133
A company maintains an application responsible for processing several thousand external callbacks each day. The companyâs System administrators want to know how many callbacks are being received on a rolling basis, and they want this data available for 10 days. The company also wants the ability to issue automated alerts if the number of callbacks exceeds the defined thresholds. What is the MOST cost-effective way to address the need to track and alert on these statistics?
Options:
Answer: E
Amazon DVA-C01 Sample Question 134
A company has a serverless application that uses AWS Lambda functions and AWS Systems Manager parameters to store configuration data. The company....... the Lambda functions inside the VPC and into private subnets. The Lambda functions are now producing errors in their attempts to access Systems Manager parameters. Which solution will allow the Lambda functions to access Systems Manager parameters inside the VPC?
Options:
Answer: C
Amazon DVA-C01 Sample Question 135
A Developer is creating a Lambda function and will be using external libraries that are not included in the standard Lambda libraries. What action would minimize the Lambda compute time consumed?
Options:
Answer: E
Amazon DVA-C01 Sample Question 136
A developer is migrating a Windows-based legacy application from on premises to AWS. The application will run on Amazon EC2 instances that run Amazon Linux. The application stores a large number of files in an NFS drive. The migration solution must minimize downtime and application code changes. Which solution should the developer use to migrate the application data?
Options:
Answer: D
Amazon DVA-C01 Sample Question 137
A developer is working on an ecommerce website. The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available. How can the developer update the application to meet these requirements with MINIMUM changes?
Options:
Answer: E
Amazon DVA-C01 Sample Question 138
Where should an Elastic Beanstalk configuration file named healthcheckur1.config be placed in the application source bundle?
Options:
Answer: E
Amazon DVA-C01 Sample Question 139
A Developer has published an update to an application that is served to a global user base using Amazon CloudFront. After deploying the application, users are not able to see the updated changes. How can the Developer resolve this issue?
Options:
Answer: C Explanation: Explanation: https://docs.aws.ama zon.com/AmazonCloudFront/latest/DeveloperGuide/Invalidation.htmm
Amazon DVA-C01 Sample Question 140
A company is creating an application that will require users to access AWS services and allow them to reset their own passwords. Which of the following would allow the company to manage users and authorization while allowing users to reset their own passwords?
Options:
Answer: D Explanation: Explanation: https://serverles s-stack.com/chapters/cognito-user-pool-vs-identity-pool.htmm
Amazon DVA-C01 Sample Question 141
An existing serverless application processes uploaded image files. The process currently uses a single Lambda function that takes an image file, performs the processing, and stores the file in Amazon S3. Users of the application now require thumbnail generation of the images. Users want to avoid any impact to the time it takes to perform the image uploads. How can thumbnail generation be added to the application, meeting user requirements while minimizing changes to existing code?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/lambda/latest/dg/with-s3-example.htmm
Amazon DVA-C01 Sample Question 142
Which of the following services are key/value stores? Choose 3 answers
Options:
Answer: A, C, F
Amazon DVA-C01 Sample Question 143
A Development team currently supports an application that uses an in-memory store to save accumulated game results. Individual results are stored in a database. As part of migrating to AWS, the team needs to use automatic scaling. The team knows this will yield inconsistent results. Where should the team store these accumulated game results to BEST allow for consistent results without impacting performance?
Options:
Answer: D
Amazon DVA-C01 Sample Question 144
A deployment package uses the AWS CLI to copy files into any S3 bucket in the account, using access keys stored in environment variables. The package is running on EC2 instances, and the instances have been modified to run with an assumed IAM role and a more restrictive policy that allows access to only one bucket. After the change, the Developer logs into the host and still has the ability to write into all of the S3 buckets in that account. What is the MOST likely cause of this situation?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/sdk-for-java/v1/developer -guide/credentials.htmm
Amazon DVA-C01 Sample Question 145
Which of the following programming languages have an officially supported AWS SDK? Choose 2 answers
Options:
Answer: B, E
Amazon DVA-C01 Sample Question 146
Which code snippet below returns the URL of a load balanced web site created in CloudFormation with an AWS::ElasticLoadBalancing::LoadBalancer resource name "ElasticLoad Balancer"?
Options:
Answer: A Explanation: Explanation: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-functio n-reference-getatt.htmm
Amazon DVA-C01 Sample Question 147
Developer is creating an AWS Lambda function to process a stream of data from an Amazon Kinesis Data Stream. When the Lambda function parses the data and encounters a missing field, it exits the function with an error. The function is generating duplicate records from the Kinesis stream. When the Developer looks at the stream output without the Lambda function, there are no duplicate records. What is the reason for the duplicates?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/lambda/latest/dg/with-kinesis.htmm
Amazon DVA-C01 Sample Question 148
A Developer decides lo store highly secure data in Amazon S3 and wants to implement server-side encryption (SSF) with granular control of who can access the master key Company policy requires that the master key be created, rotated, and disabled easily when needed, all for security reasons. Which solution should be used to moot these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 149
An application stores images in an S3 bucket. Amazon S3 event notifications are used to trigger a Lambda function that resizes the images. Processing each image takes less than a second. How will AWS Lambda handle the additional traffic?
Options:
Answer: B
Amazon DVA-C01 Sample Question 150
A company is using AWS Elastic Beanstalk to deploy a three-tier application. The application uses an Amazon RDS DB instance as the database tier. The com wants to decouple the DB instance from the Elastic Beanstalk environment. Which combination of steps should a developer take to meet this requirement? (Select TWO.)
Options:
Answer: B, F
Amazon DVA-C01 Sample Question 151
An application displays a status dashboard. The status is updated by 1 KB messages from an SQS queue. Although the status changes infrequently, the Developer must minimize the time between the message arrival in the queue and the dashboard update. What technique provides the shortest delay in updating the dashboard?
Options:
Answer: A Explanation: Explanation: https://docs.aws.ama zon.com/ko_kr/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-short-and-long-polling.html#sqs-short-long-polling-differencet
Amazon DVA-C01 Sample Question 152
A Developer is writing transactions into a DynamoDB table called âSystemUpdatesâ that has 5 write capacity units. Which option has the highest read throughput?
Options:
Answer: C
Amazon DVA-C01 Sample Question 153
A company needs to ingest terabytes of data each hour from thousands of sources that are delivered almost continually throughout the day. The volume of messages generated varies over the course of the day. Messages must be delivered in real time for fraud detection and live operational dashboards. Which approach will meet these requirements?
Options:
Answer: D Explanation: Explanation: https://aws.amazon.c om/streaming-data/
Amazon DVA-C01 Sample Question 154
A global company has an application running on Amazon EC2 instances that serves image files from Amazon S3. User requests from the browser are causing high traffic, which results in degraded performance. Which optimization solution should a Developer implement to increase application performance?
Options:
Answer: C
Amazon DVA-C01 Sample Question 155
An application running on multiple Amazon EC2 instances pulls messages ...SQS queue. A requirement for the application is that all messages must be encrypted at rest. Developers are instructed to use methods that allow for centralized .. possible support requirements whenever possible. Which of the following solution supports these requirements?
Options:
Answer: D
Amazon DVA-C01 Sample Question 156
A developer has written a multi-threaded application that is running on a fleet of Amazon EC2 instances. The operations team has requested a graphical method to monitor the number of running threads over time. What is the MOST efficient way to fulfill this request?
Options:
Answer: E
Amazon DVA-C01 Sample Question 157
You are inserting 1000 new items every second in a DynamoDB table. Once an hour these items are analyzed and then are no longer needed. You need to minimize provisioned throughput, storage, and API calls. Given these requirements, what is the most efficient way to manage these Items after the analysis?
Options:
Answer: D
Amazon DVA-C01 Sample Question 158
A developer is planning to use an Amazon API Gateway and AWS Lambda to provide a REST API The developer will have three distinct environments to manage development, test, and production. How should the application be deployed while minimizing the number of resources to manage?
Options:
Answer: D
Amazon DVA-C01 Sample Question 159
A company is migrating a single-server, on-premises web application to AWS. The company intends to use multiple servers behind an Elastic Load Balancer (ELB) to balance the load, and will also store session data in memory on the web server. The company does not want to lose that session data if a server fails or goes offline, and it wants to minimize userâs downtime. Where should the company move session data to MOST effectively reduce downtime and make usersâ session data more fault tolerant?
Options:
Answer: B
Amazon DVA-C01 Sample Question 160
A developer wants the ability to roll back to a previous version of an AWS Lambda function in the event of errors caused by a new deployment. How can the developer achieve this with MINIMAL impact on users?
Options:
Answer: B
Amazon DVA-C01 Sample Question 161
Your application is trying to upload a 6 GB file to Simple Storage Service and receive a âYour proposed upload exceeds the maximum allowed object size." error message. What is a possible solution for this?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/Amaz onS3/latest/dev/mpuoverview.htmm
Amazon DVA-C01 Sample Question 162
A Developer writes an AWS Lambda function and uploads the code in a .ZIP file to Amazon S3. The Developer makes changes to the code and uploads a new .ZIP file to Amazon S3. However, Lambda executes the earlier code. How can the Developer fix this in the LEAST disruptive way?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon .com/cli/latest/reference/lambda/update-function-code.htmm
Amazon DVA-C01 Sample Question 163
An application contains two components one component to handle HI IP requests, and another component to handle background processing tasks Bach component must scale independently The developer wants to deploy this application using AWS Elastic Beanstalk. How should this application be deployed, based on these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 164
A Developer is making changes to a custom application that is currently using AWS Elastic Beanstalk. After the Developer completes the changes, what solutions will update the Elastic Beanstalk environment with the new application version? (Choose two.)
Options:
Answer: C, E
Amazon DVA-C01 Sample Question 165
Which DynamoDB limits can be raised by contacting AWS support? Choose 2 answers
Options:
Answer: C, E Explanation: Explanation: https://docs.aws.amazon.com/amazondynamodb/l atest/developerguide/Limits.htmm
Amazon DVA-C01 Sample Question 166
A Developer must re-implement the business logic for an order fulfilment system. The business logic has to make requests to multiple vendors to decide where to purchase an item. The whole process can take up to a week to complete. What is the MOST efficient and SIMPLEST way to implement a system that meets these requirements?
Options:
Answer: A Explanation: Explanation: https://aws.amazon.com/step-functions/
Amazon DVA-C01 Sample Question 167
EC2 instances are launched from Amazon Machine images (AMIs). A given public AMI can:
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/usingsharedamis-finding.htmm
Amazon DVA-C01 Sample Question 168
A developer wants to secure sensitive configuration date such as passwords, database strings, and application license codes. Access to this sensitive information must be tracked for future audit purposes.
Options:
Answer: C
Amazon DVA-C01 Sample Question 169
A Developer is creating a mobile application with a limited budget. The solution requires a scalable service that will enable customers to sign up and authenticate into the mobile application while using the organizationâs current SAML 2.0 identity provider. Which AWS service should be used to meet these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 170
company needs a fully-managed source control service that will work in AWS. The service must ensure that revision control synchronizes multiple distributed repositories by exchanging sets of changes peer-to-peer. All users need to work productively even when not connected to a network. Which source control service should be used?
Options:
Answer: D
Amazon DVA-C01 Sample Question 171
In a multi-container Docker environment in AWS Elastic Beanstalk, what is required to configure container instances in the environment?
Options:
Answer: A Explanation: Reference: [Reference: https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_docker_ecs.html, , , , ]
Amazon DVA-C01 Sample Question 172
A Developer is storing sensitive documents in Amazon S3 that will require encryption at rest. The encryption keys must be rotated annually, at least. What is the easiest way to achieve this?
Options:
Answer: C Explanation: Explanation: https://docs.a ws.amazon.com/kms/latest/developerguide/rotate-keys.htmlhttps://docs.aws.amazon.com/kms/latest/developerguide/custom-key-store-overview.htm lYou can use the same techniques to view and manage the CMKs in your custom key store that you use for CMKs in the AWS KMS key store. You can control access with IAM and key policies, create tags and aliases, enable and disable the CMKs, and schedule key deletion. You can use the CMKs for cryptographic operations and use them with AWS services that integrate with AWS KMS. However, you cannot enable automatic key rotation and you cannot import key material into a CMK in a custom key store.Q: Can I rotate my keys? Yes. You can choose to have AWS KMS automatically rotate CMKs every year, provided that those keys were generated within AWS KMS HSMs. Automatic key rotation is not supported for imported keys, asymmetric keys, or keys generated in an AWS CloudHSM cluster using the AWS KMS custom key store feature. If you choose to import keys to AWS KMS or asymmetric keys or use a custom key store, you can manually rotate them by creating a new CMK and mapping an existing key alias from the old CMK to the new CMK. https://aws.amazon.com/kms/faqs/
Amazon DVA-C01 Sample Question 173
A Developer is migrating an on-premises application to AWS. The application currently takes user uploads and saves them to a local directory on the server. All uploads must be saved and made immediately available to all instances in an Auto scaling group. Which approach will meet these requirements?
Options:
Answer: C
Amazon DVA-C01 Sample Question 174
A development team is using AWS Elastic Beanstalk to deploy a two-tier application that consists of a load-balanced web tier and an Amazon RDS database tier in production. The team would like to separate the RDS instance from the Elastic Beanstalk. How can this be accomplished?
Options:
Answer: D Explanation: Explanation: https://aws.amazon.com/premiumsuppo rt/knowledge-center/decouple-rds-from-beanstalk/
Amazon DVA-C01 Sample Question 175
A developer is working on a Python application that runs on Amazon EC2 instances. The developer wants to enable tracing of application requests to debug performance issues in the code. Which combination of actions should the developer take to achieve this goal? (Select TWO.)
Options:
Answer: B, F
Amazon DVA-C01 Sample Question 176
A Developer must analyze performance issues with production-distributed applications written as AWS Lambda functions. These distributed Lambda applications invoke other components that make up the applications. How should the Developer identify and troubleshoot the root cause of the performance issues in production?
Options:
Answer: C Explanation: Explanation: https://aws.amazon.com/blogs/developer/new-analyze-and-debug-distributed-applications-interactively-using-aws-x-ray-analytics/
Amazon DVA-C01 Sample Question 177
What type of block cipher does Amazon S3 offer for server side encryption?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/AmazonS3/latest/dev/serv-side-encryption.htmm
Amazon DVA-C01 Sample Question 178
A developer is receiving an intermittent ProvisionedThroughputExceededException error from an application that is based on Amazon DynamoDB. According to the Amazon CloudWatch metrics for the table, the application is not exceeding the provisioned throughput What could be the cause of the issue?
Options:
Answer: C
Amazon DVA-C01 Sample Question 179
A Developer is writing a Linux-based application to run on AWS Elastic Beanstalk. Application requirements state that the application must maintain full capacity during updates while minimizing cost. Which type of Elastic Beanstalk deployment policy should the Developer specify for the environment?
Options:
Answer: D Explanation: Explanation: https://docs.aws.amazon.co m/elasticbeanstalk/latest/dg/using-features.rolling-version-deploy.htmm
Amazon DVA-C01 Sample Question 180
A customer wants to deploy its source code on an AWS Elastic Beanstalk environment. The customer needs to perform deployment with minimal outage and should only use existing instances to retain application access log. What deployment policy would satisfy these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 181
A company has three AWS Lambda functions that are written in Node js The Lambda functions include a mix of custom code and open-source modules When bugs are occasionally detected in the open-source modules, all three Lambda functions must be patched. What is the MOST operationally efficient solution to deploy a patched open-source library for all three Lambda functions?
Options:
Answer: E
Amazon DVA-C01 Sample Question 182
A developer is writing an application in AWS Lambda To simplify testing and deployments, the developer needs the database connection string to be easily changed without modifying the Lambda code. How can this requirement be met?
Options:
Answer: B
Amazon DVA-C01 Sample Question 183
Company A has an S3 bucket containing premier content that they intend to make available to only paid subscribers of their website. The S3 bucket currently has default permissions of all objects being private to prevent inadvertent exposure of the premier content to non-paying website visitors. How can Company A provide only paid subscribers the ability to download a premier content file in the S3 bucket?
Options:
Answer: C
Amazon DVA-C01 Sample Question 184
n application running on an Amazon Linux EC2 instance needs to manage the AWS infrastructure. How can the EC2 instance be configured to make AWS API calls securely?
Options:
Answer: D
Amazon DVA-C01 Sample Question 185
What are the steps to using the AWS CLI to launch a templatized serverless application?
Options:
Answer: C Explanation: Explanation: https://docs.aws. amazon.com/cli/latest/reference/cloudformation/package.htmm
Amazon DVA-C01 Sample Question 186
An application is real-time processing millions of events that are received through an API. What service could be used to allow multiple consumers to process the data concurrently and MOST cost-effectively?
Options:
Answer: E
Amazon DVA-C01 Sample Question 187
Which statements about DynamoDB are true? Choose 2 answers
Options:
Answer: B, D
Amazon DVA-C01 Sample Question 188
A Developer wants to enable AWS X-Ray for a secure application that runs in an Amazon ECS environment. What combination of steps will enable X-Ray? (Select THREE.)
Options:
Answer: A, B, F Explanation: Explanation: https://doc s.aws.amazon.com/xray/latest/devguide/xray-daemon-ecs.htmlhttps://docs.aws.amazon.com/xray/latest/devguide/scorekeep-ecs.htmm
Amazon DVA-C01 Sample Question 189
The development team is working on an API that will be served from Amazon API gateway. The API will be served from three environments: development, test, and production. The API Gateway is configured to use 237 GB of cache in all three stages. Which is the MOST cost-efficient deployment strategy?
Options:
Answer: E
Amazon DVA-C01 Sample Question 190
A game stores user game data in an Amazon DynamoDB table. Individual users should not have access to other usersâ game data. How can this be accomplished?
Options:
Answer: C
Amazon DVA-C01 Sample Question 191
A developer has written an application that runs on Amazon EC2 instances. The developer is adding functionality for the application to write objects to an Amazon S3 bucket Which policy must the developer modify to allow the instances to write these objects?
Options:
Answer: B
Amazon DVA-C01 Sample Question 192
A company is using Amazon RDS MySQL instances for its application database tier and Apache Tomcat servers for its web tier. Most of the database queries from web applications are repeated read requests. Use of which AWS service would increase in performance by adding in-memory store for repeated read queries?
Options:
Answer: D
Amazon DVA-C01 Sample Question 193
A company needs to distribute firmware updates to its customers around the world. Which service will allow easy and secure control of the access to the downloads at the lowest cost?
Options:
Answer: A Explanation: Explanation: https://aws.amazon.com/bl ogs/networking-and-content-delivery/amazon-s3-amazon-cloudfront-a-match-made-in-the-cloud/
Amazon DVA-C01 Sample Question 194
A Developer has created a Lambda function and is finding that the function is taking longer to complete than expected. After some debugging, the Developer has discovered that increasing compute capacity would improve performance. How can the Developer increase the Lambda compute resources?
Options:
Answer: E
Amazon DVA-C01 Sample Question 195
A developer Is working with a Docker application that needs to be quickly deployed using AWS without changing the infrastructure or configuring health checks. The application should be configured so that changes and updates can be made automatically without any downtime Which solution will meet these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 196
Company C has recently launched an online commerce site for bicycles on AWS. They have a "Product" DynamoDB table that stores details for each bicycle, such as, manufacturer, color, price, quantity and size to display in the online store. Due to customer demand, they want to include an image for each bicycle along with the existing details. Which approach below provides the least impact to provisioned throughput on the "Product" table?
Options:
Answer: D Explanation: Explanation: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-use-s3-too.html #bp-use-s3-too-large-valuesFor example, consider the ProductCatalog table in the Creating Tables and Loading Data for Code Examples in DynamoDB section. Items in this table store information about item price, description, book authors, and dimensions for other products. If you wanted to store an image of each product that was too large to fit in an item, you could store the images in Amazon S3 instead of in DynamoDB.
Amazon DVA-C01 Sample Question 197
n on-premises application makes repeated calls to store files to Amazon S3. As usage of the application has increased, âLimitExceededâ errors are being logged. What should be changed to fix this error?
Options:
Answer: B
Amazon DVA-C01 Sample Question 198
A developer has a legacy application that is hosted on-premises Other applications hosted on AWS depend on the on-premises application for proper functioning In case of any application errors, the developer wants to be able to use Amazon CloudWatch to monitor and troubleshoot all applications from one place. How can the developer accomplish this?
Options:
Answer: B Explanation: Reference: [Reference: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-onpremise.Html, ]
Amazon DVA-C01 Sample Question 199
A developer has created a Node js web application on a local development machine. The developer wants to use AWS technology to host the website. The developer needs a solution that requires the least possible operational overhead and no code changes. Which AWS service should the developer use to meet these requirements?
Options:
Answer: B
Amazon DVA-C01 Sample Question 200
For a deployment using AWS CodeDeploy, what is the run order of the hooks for in-place deployments?
Options:
Answer: C
Amazon DVA-C01 Sample Question 201
A company maintains an application responsible for processing several thousand external callbacks each day. The companyâs System administrators want to know how many callbacks are being received on a rolling basis, and they want this data available for 10 days. The company also wants the ability to issue automated alerts if the number of callbacks exceeds the defined thresholds. What is the MOST cost-effective way to address the need to track and alert on these statistics?
Options:
Answer: E
Amazon DVA-C01 Sample Question 202
A company has a serverless application that uses AWS Lambda functions and AWS Systems Manager parameters to store configuration data. The company....... the Lambda functions inside the VPC and into private subnets. The Lambda functions are now producing errors in their attempts to access Systems Manager parameters. Which solution will allow the Lambda functions to access Systems Manager parameters inside the VPC?
Options:
Answer: C
Amazon DVA-C01 Sample Question 203
A Developer is creating a Lambda function and will be using external libraries that are not included in the standard Lambda libraries. What action would minimize the Lambda compute time consumed?
Options:
Answer: E
Amazon DVA-C01 Sample Question 204
A developer is migrating a Windows-based legacy application from on premises to AWS. The application will run on Amazon EC2 instances that run Amazon Linux. The application stores a large number of files in an NFS drive. The migration solution must minimize downtime and application code changes. Which solution should the developer use to migrate the application data?
Options:
Answer: D