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The AWS Certified Database - Specialty (DBS-C01) Certification Exam is an essential certification for IT professionals who specialize in database technologies and want to demonstrate their skills and knowledge in deploying and managing database solutions on the AWS platform. With this certification, IT professionals can enhance their career prospects and demonstrate their expertise to potential employers.

The Amazon AWS-Certified-Database-Specialty exam covers a broad range of topics related to AWS databases, including relational and non-relational databases, data migration, backup and recovery, security, monitoring, and performance optimization. It also includes questions about AWS services such as Amazon RDS, DynamoDB, and Aurora, as well as AWS database migration tools and services. Passing the Amazon DBS-C01 exam demonstrates that the candidate has a deep understanding of AWS database services and is capable of designing, deploying, and managing scalable, highly available, and fault-tolerant database solutions on AWS.

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Amazon AWS Certified Database - Specialty (DBS-C01) Exam Sample Questions (Q27-Q32):

An online shopping company has a large inflow of shopping requests daily. As a result, there is a consistent load on the company's Amazon RDS database. A database specialist needs to ensure the database is up and running at all times. The database specialist wants an automatic notification system for issues that may cause database downtime or for configuration changes made to the database.
What should the database specialist do to achieve this? (Choose two.)

  • A. Use Amazon SES to send notifications based on configured Amazon CloudWatch Events events.
  • B. Configure Amazon CloudWatch alarms on various metrics, such as FreeStorageSpace for the RDS instance.
  • C. Subscribe to an RDS event subscription and configure it to use an Amazon SNS topic to send notifications.
  • D. Enable email notifications for AWS Trusted Advisor.
  • E. Create an Amazon CloudWatch Events event to send a notification using Amazon SNS on every API call logged in AWS CloudTrail.

Answer: B,C

A company has an application that uses an Amazon DynamoDB table to store user data. Every morning, a single-threaded process calls the DynamoDB API Scan operation to scan the entire table and generate a critical start-of-day report for management. A successful marketing campaign recently doubled the number of items in the table, and now the process takes too long to run and the report is not generated in time.
A database specialist needs to improve the performance of the process. The database specialist notes that, when the process is running, 15% of the table's provisioned read capacity units (RCUs) are being used.
What should the database specialist do?

  • A. Use four threads and parallel DynamoDB API Scan operations.
  • B. Double the table's provisioned RCUs.
  • C. Set the Limit and Offset parameters before every call to the API.
  • D. Enable auto scaling for the DynamoDB table.

Answer: A


A financial services organization employs an Amazon Aurora PostgreSQL DB cluster to host an application on AWS. No log files detailing database administrator activity were discovered during a recent examination. A database professional must suggest a solution that enables access to the database and maintains activity logs. The solution should be simple to implement and have a negligible effect on performance.
Which database specialist solution should be recommended?

  • A. Enable Aurora Database Activity Streams on the database in synchronous mode. Connect the Amazon Kinesis data stream to Kinesis Data Firehose. Set the Kinesis Data Firehose destination to an Amazon S3 bucket.
  • B. Create an AWS CloudTrail trail in the Region where the database runs. Associate the database activity logs with the trail.
  • C. Enable Aurora Database Activity Streams on the database in asynchronous mode. Connect the Amazon Kinesis data stream to Kinesis Data Firehose. Set the Firehose destination to an Amazon S3 bucket.
  • D. Allow connections to the DB cluster through a bastion host only. Restrict database access to the bastion host and application servers. Push the bastion host logs to Amazon CloudWatch Logs using the CloudWatch Logs agent.

Answer: C


A single MySQL database was moved to Amazon Aurora by a business. The production data is stored in a database cluster in VPC PROD, whereas 12 testing environments are hosted in VPC TEST with the same AWS account. Testing has a negligible effect on the test data. The development team requires that each environment be updated nightly to ensure that each test database has daily production data.
Which migration strategy will be the quickest and least expensive to implement?

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

Answer: D


A company's database specialist implements an AWS Database Migration Service (AWS DMS) task for change data capture (CDC) to replicate data from an on- premises Oracle database to Amazon S3. When usage of the company's application increases, the database specialist notices multiple hours of latency with the CDC.
Which solutions will reduce this latency? (Choose two.)

  • A. Load tables in parallel by creating multiple replication instances for sets of tables that participate in common transactions.
  • B. Configure the DMS task to run in full large binary object (LOB) mode.
  • C. Replicate tables in parallel by creating multiple DMS tasks for sets of tables that do not participate in common transactions.
  • D. Create a Multi-AZ replication instance.
  • E. Configure the DMS task to run in limited large binary object (LOB) mode.

Answer: C,E


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