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Sample Questions
Realexamdumps Providing most updated AWS Certified Database Question Answers. Here are a few sample questions:
Amazon DBS-C01 Sample Question 1
A company is running an Amazon RDS for MySQL Multi-AZ DB instance for a business-critical workload. RDS encryption for the DB instance is disabled. A recent security audit concluded that all business-critical applications must encrypt data at rest. The company has asked its database specialist to formulate a plan to accomplish this for the DB instance. Which process should the database specialist recommend?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.Encryption.html#Overview.Encryption.Limitationt
Amazon DBS-C01 Sample Question 2
A company is load testing its three-tier production web application deployed with an AWS CloudFormation template on AWS. The Application team is making changes to deploy additional Amazon EC2 and AWS Lambda resources to expand the load testing capacity. A Database Specialist wants to ensure that the changes made by the Application team will not change the Amazon RDS database resources already deployed. Which combination of steps would allow the Database Specialist to accomplish this? (Choose two.)
Options:
Answer: B, E Explanation: Explanation: https://docs.amazonaws.cn/en_us/AWSCloudFormation/latest/UserGuide/best-practices.html#cfn-best-practices-changesett
Amazon DBS-C01 Sample Question 3
A ride-hailing application uses an Amazon RDS for MySQL DB instance as persistent storage for bookings. This application is very popular and the company expects a tenfold increase in the user base in next few months. The application experiences more traffic during the morning and evening hours. This application has two parts: A database specialist needs to design a cost-effective database solution to handle this workload. Which solution meets these requirements?
Options:
Answer: E
Amazon DBS-C01 Sample Question 4
A gaming company wants to deploy a game in multiple Regions. The company plans to save local high scores in Amazon DynamoDB tables in each Region. A Database Specialist needs to design a solution to automate the deployment of the database with identical configurations in additional Regions, as needed. The solution should also automate configuration changes across all Regions. Which solution would meet these requirements and deploy the DynamoDB tables?
Options:
Answer: C Explanation: Explanation: https://aws.amazon.com/blogs/aws/use-cloudformation-stacksets-to-provision-resources-across-multiple-aws-accounts-and-regions/ https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/stacksets-concepts.htmm
Amazon DBS-C01 Sample Question 5
A company uses Amazon Aurora for secure financial transactions. The data must always be encrypted at rest and in transit to meet compliance requirements. Which combination of actions should a database specialist take to meet these requirements? (Choose two.)
Options:
Answer: A, B Explanation: Explanation: https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/aurora-replicas-adding.htmm
Amazon DBS-C01 Sample Question 6
A company is using Amazon with Aurora Replicas for read-only workload scaling. A Database Specialist needs to split up two read-only applications so each application always connects to a dedicated replica. The Database Specialist wants to implement load balancing and high availability for the read-only applications. Which solution meets these requirements?
Options:
Answer: D Explanation: Explanation: https://aws.amazon.com/about-aws/whats-new/2018/11/amazon-aurora-simplifies-workload-management-with-custom-endpoints/
Amazon DBS-C01 Sample Question 7
A company is building a software as a service application. As part of the new user sign-on workflow, a Python script invokes the CreateTable operation using the Amazon DynamoDB API. After the call returns, the script attempts to call PutItem. Occasionally, the PutItem request fails with a ResourceNotFoundException error, which causes the workflow to fail. The development team has confirmed that the same table name is used in the two API calls. How should a database specialist fix this issue?
Options:
Answer: C Explanation: Explanation: https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_DescribeTable.htmm
Amazon DBS-C01 Sample Question 8
A companyâs Security department established new requirements that state internal users must connect to an existing Amazon RDS for SQL Server DB instance using their corporate Active Directory (AD) credentials. A Database Specialist must make the modifications needed to fulfill this requirement. Which combination of actions should the Database Specialist take? (Choose three.)
Options:
Answer: B, C, F Explanation: Explanation: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_SQLServerWinAuth.htmm
Amazon DBS-C01 Sample Question 9
A company is running an on-premises application comprised of a web tier, an application tier, and a MySQL database tier. The database is used primarily during business hours with random activity peaks throughout the day. A database specialist needs to improve the availability and reduce the cost of the MySQL database tier as part of the companyâs migration to AWS. Which MySQL database option would meet these requirements?
Options:
Answer: D
Amazon DBS-C01 Sample Question 10
Recently, an ecommerce business transferred one of its SQL Server databases to an Amazon RDS for SQL Server Enterprise Edition database instance. The corporation anticipates an increase in read traffic as a result of an approaching sale. To accommodate the projected read load, a database professional must establish a read replica of the database instance. Which procedures should the database professional do prior to establishing the read replica? (Select two.)
Options:
Answer: B, C Explanation: Explanation: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/SQLServer.ReadReplicas.htmm
Amazon DBS-C01 Sample Question 11
For the first time, a database professional is establishing a test graph database on Amazon Neptune. The database expert must input millions of rows of test observations from an Amazon S3.csv file. The database professional uploaded the data to the Neptune DB instance through a series of API calls. Which sequence of actions enables the database professional to upload the data most quickly? (Select three.)
Options:
Answer: B, E, F Explanation: Explanation: https://d ocs.aws.amazon.com/neptune/latest/userguide/bulk-load-optimize.htmm
Amazon DBS-C01 Sample Question 12
A company is running a finance application on an Amazon RDS for MySQL DB instance. The application is governed by multiple financial regulatory agencies. The RDS DB instance is set up with security groups to allow access to certain Amazon EC2 servers only. AWS KMS is used for encryption at rest. Which step will provide additional security?
Options:
Answer: D Explanation: Reference: [Reference: https://aws.amazon.com/blogs/database/applying-best-practices-for-securing-sensitive-data-in- amazon-rds/, ]
Amazon DBS-C01 Sample Question 13
A company is running a website on Amazon EC2 instances deployed in multiple Availability Zones (AZs). The site performs a high number of repetitive reads and writes each second on an Amazon RDS for MySQL Multi- AZ DB instance with General Purpose SSD (gp2) storage. After comprehensive testing and analysis, a database specialist discovers that there is high read latency and high CPU utilization on the DB instance. Which approach should the database specialist to take to resolve this issue without changing the application?
Options:
Answer: E
Amazon DBS-C01 Sample Question 14
A company is running a two-tier ecommerce application in one AWS account. The web server is deployed using an Amazon RDS for MySQL Multi-AZ DB instance. A Developer mistakenly deleted the database in the production environment. The database has been restored, but this resulted in hours of downtime and lost revenue. Which combination of changes in existing IAM policies should a Database Specialist make to prevent an error like this from happening in the future? (Choose three.)
Options:
Answer: A, C, D Explanation: Explanation: https://aws.amazon.com/blogs/database/using-iam-multifactor-authentication-with-amazon-rds/ https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/security_iam_id-based-policy-htmlhttps://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/DataDurability.htmm
Amazon DBS-C01 Sample Question 15
A company is looking to move an on-premises IBM Db2 database running AIX on an IBM POWER7 server. Due to escalating support and maintenance costs, the company is exploring the option of moving the workload to an Amazon Aurora PostgreSQL DB cluster. What is the quickest way for the company to gather data on the migration compatibility?
Options:
Answer: D Explanation: Reference: [Reference: https://docs.aws.amazon.com/SchemaConversionTool/latest/userguide/Schema-Conversion- Tool.pdf, ⢠Converts DB/DW schema from source to target (including procedures / views / secondary indexes / FK and constraints), ⢠Mainly for heterogeneous DB migrations and DW migrations, , ]
Amazon DBS-C01 Sample Question 16
A company is using Amazon RDS for PostgreSQL. The Security team wants all database connection requests to be logged and retained for 180 days. The RDS for PostgreSQL DB instance is currently using the default parameter group. A Database Specialist has identified that setting the log_connections parameter to 1 will enable connections logging. Which combination of steps should the Database Specialist take to meet the logging and retention requirements? (Choose two.)
Options:
Answer: A, E Explanation: Reference: [Reference: https://aws.amazon.com/blogs/database/working-with-rds-and-aurora-postgresql-logs-part-1/, ]
Amazon DBS-C01 Sample Question 17
A large company has a variety of Amazon DB clusters. Each of these clusters has various configurations that adhere to various requirements. Depending on the team and use case, these configurations can be organized into broader categories. A database administrator wants to make the process of storing and modifying these parameters more systematic. The database administrator also wants to ensure that changes to individual categories of configurations are automatically applied to all instances when required. Which AWS service or feature will help automate and achieve this objective?
Options:
Answer: B Explanation: Reference: [Reference: https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/ USER_WorkingWithParamGroups.html, ]
Amazon DBS-C01 Sample Question 18
A company just migrated to Amazon Aurora PostgreSQL from an on-premises Oracle database. After the migration, the company discovered there is a period of time every day around 3:00 PM where the response time of the application is noticeably slower. The company has narrowed down the cause of this issue to the database and not the application. Which set of steps should the Database Specialist take to most efficiently find the problematic PostgreSQL query?
Options:
Answer: E
Amazon DBS-C01 Sample Question 19
An electric utility company wants to store power plant sensor data in an Amazon DynamoDB table. The utility company has over 100 power plants and each power plant has over 200 sensors that send data every 2 seconds. The sensor data includes time with milliseconds precision, a value, and a fault attribute if the sensor is malfunctioning. Power plants are identified by a globally unique identifier. Sensors are identified by a unique identifier within each power plant. A database specialist needs to design the table to support an efficient method of finding all faulty sensors within a given power plant. Which schema should the database specialist use when creating the DynamoDB table to achieve the fastest query time when looking for faulty sensors?
Options:
Answer: D Explanation: Explanation: Plant id as partition key and Sensor id as a sort key. Fault can be identified quickly using the local secondary index and associated plant and sensor can be identified easily.
Amazon DBS-C01 Sample Question 20
A company maintains several databases using Amazon RDS for MySQL and PostgreSQL. Each RDS database generates log files with retention periods set to their default values. The company has now mandated that database logs be maintained for up to 90 days in a centralized repository to facilitate real-time and after- the-fact analyses. What should a Database Specialist do to meet these requirements with minimal effort?
Options:
Answer: B Explanation: Explanation: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_LogAccess.html https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_LogAccess.Procedural.UploadtoCloudWatch.htm https://aws.amazon.com/premiumsupport/knowledge-center/rds-aurora-mysql-logs-cloudwatch/ https://docs.aws.amazon.com/AmazonCloudWatchLogs/latest/APIReference/API_PutRetentionPolicy.htmm
Amazon DBS-C01 Sample Question 21
A software development company is using Amazon Aurora MySQL DB clusters for several use cases, including development and reporting. These use cases place unpredictable and varying demands on the Aurora DB clusters, and can cause momentary spikes in latency. System users run ad-hoc queries sporadically throughout the week. Cost is a primary concern for the company, and a solution that does not require significant rework is needed. Which solution meets these requirements?
Options:
Answer: A Explanation: Explanation: https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Concepts.DBInstanceClass.htmm