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DBS-C01 PDF + Testing Engine



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  • Exam Name: AWS Certified Database - Specialty
  • Last Update: 01-Dec-2021
  • Questions and Answers: 145
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DBS-C01 Questions and Answers

Question # 1

A company has migrated a single MySQL database to Amazon Aurora. The production data is hosted in a DB cluster in VPC_PROD, and 12 testing environments are hosted in VPC_TEST using the same AWS account. Testing results in minimal changes to the test data. The Development team wants each environment refreshed nightly so each test database contains fresh production data every day.
Which migration approach will be the fastest and most cost-effective to implement?

A. Run the master in Amazon Aurora MySQL. Create 12 clones in VPC_TEST, and script the clones to be deleted and re-created nightly.
B. Run the master in Amazon Aurora MySQL. Take a nightly snapshot, and restore it into 12 databases in VPC_TEST using Aurora Serverless.
C. Run the master in Amazon Aurora MySQL. Create 12 Aurora Replicas in VPC_TEST, and script the replicas to be deleted and re-created nightly.
D. Run the master in Amazon Aurora MySQL using Aurora Serverless. Create 12 clones in VPC_TEST, and script the clones to be deleted and re-created nightly.
Question # 2

A large ecommerce company uses Amazon DynamoDB to handle the transactions on its web portal. Traffic patterns throughout the year are usually stable; however, a large event is planned. The company knows that traffic will increase by up to 10 times the normal load over the 3-day event. When sale prices are published during the event, traffic will spike rapidly.
How should a Database Specialist ensure DynamoDB can handle the increased traffic?

A. Ensure the table is always provisioned to meet peak needs
B. Allow burst capacity to handle the additional load
C. Set an AWS Application Auto Scaling policy for the table to handle the increase in traffic
D. Preprovision additional capacity for the known peaks and then reduce the capacity after the event
Question # 3

A Database Specialist is migrating an on-premises Microsoft SQL Server application database to Amazon RDS for PostgreSQL using AWS DMS. The application requires minimal downtime when the RDS DB instance goes live.
What change should the Database Specialist make to enable the migration?

A. Configure the on-premises application database to act as a source for an AWS DMS full load with ongoing change data capture (CDC)
B. Configure the AWS DMS replication instance to allow both full load and ongoing change data capture (CDC)
C. Configure the AWS DMS task to generate full logs to allow for ongoing change data capture (CDC)
D. Configure the AWS DMS connections to allow two-way communication to allow for ongoing change data capture (CDC)
Question # 4

A financial company has allocated an Amazon RDS MariaDB DB instance with large storage capacity to accommodate migration efforts. Post-migration, the company purged unwanted data from the instance. The company now want to downsize storage to save money. The solution must have the least impact on production and near-zero downtime.
Which solution would meet these requirements?

A. Create a snapshot of the old databases and restore the snapshot with the required storage
B. Create a new RDS DB instance with the required storage and move the databases from the old instances to the new instance using AWS DMS
C. Create a new database using native backup and restore
D. Create a new read replica and make it the primary by terminating the existing primary
Question # 5

A large financial services company requires that all data be encrypted in transit. A Developer is attempting to connect to an Amazon RDS DB instance using the company VPC for the first time with credentials provided by a Database Specialist. Other members of the Development team can connect, but this user is consistently receiving an error indicating a communications link failure. The Developer asked the Database Specialist to reset the password a number of times, but the error persists.
Which step should be taken to troubleshoot this issue?

A. Ensure that the database option group for the RDS DB instance allows ingress from the Developer machine’s IP address
B. Ensure that the RDS DB instance’s subnet group includes a public subnet to allow the Developer to connect
C. Ensure that the RDS DB instance has not reached its maximum connections limit
D. Ensure that the connection is using SSL and is addressing the port where the RDS DB instance is listening for encrypted connections

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