Expert Answers to Amazon Web Services Exam DBS-C01 Questions

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AWS Certified Database AWS Certified Database - Specialty

AWS Certified Database - Specialty

Last Update Apr 3, 2025
Total Questions : 324

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Questions 2

A company stores critical data for a department in Amazon RDS for MySQL DB instances. The department was closed for 3 weeks and notified a database specialist that access to the RDS DB instances should not be granted to anyone during this time. To meet this requirement, the database specialist stopped all the

DB instances used by the department but did not select the option to create a snapshot. Before the 3 weeks expired, the database specialist discovered that users could connect to the database successfully.

What could be the reason for this?

Options:

When stopping the DB instance, the option to create a snapshot should have been selected.

When stopping the DB instance, the duration for stopping the DB instance should have been selected.

Stopped DB instances will automatically restart if the number of attempted connections exceeds the threshold set.

Stopped DB instances will automatically restart if the instance is not manually started after 7 days.

Discussion 0

Questions 3

An ecommerce company uses Amazon DynamoDB as the backend for its payments system. A new regulation requires the company to log all data access requests for financial audits. For this purpose, the company plans to use AWS logging and save logs to Amazon S3

How can a database specialist activate logging on the database?

Options:

Use AWS CloudTrail to monitor DynamoDB control-plane operations. Create a DynamoDB stream to monitor data-plane operations. Pass the stream to Amazon Kinesis Data Streams. Use that stream as a source for Amazon Kinesis Data Firehose to store the data in an Amazon S3 bucket.

Use AWS CloudTrail to monitor DynamoDB data-plane operations. Create a DynamoDB stream to monitor control-plane operations. Pass the stream to Amazon Kinesis Data Streams. Use that stream as a source for Amazon Kinesis Data Firehose to store the data in an Amazon S3 bucket.

Create two trails in AWS CloudTrail. Use Trail1 to monitor DynamoDB control-plane operations. Use Trail2 to monitor DynamoDB data-plane operations.

Use AWS CloudTrail to monitor DynamoDB data-plane and control-plane operations.

Discussion 0

Questions 4

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:

Update the log_connections parameter in the default parameter group

Create a custom parameter group, update the log_connections parameter, and associate the parameter with the DB instance

Enable publishing of database engine logs to Amazon CloudWatch Logs and set the event expiration to 180 days

Enable publishing of database engine logs to an Amazon S3 bucket and set the lifecycle policy to 180 days

Connect to the RDS PostgreSQL host and update the log_connections parameter in the postgresql.conf file

Discussion 0

Questions 5

A company is concerned about the cost of a large-scale, transactional application using Amazon DynamoDB that only needs to store data for 2 days before it is deleted. In looking at the tables, a Database Specialist notices that much of the data is months old, and goes back to when the application was first deployed.

What can the Database Specialist do to reduce the overall cost?

Options:

Create a new attribute in each table to track the expiration time and create an AWS Glue transformation to delete entries more than 2 days old.

Create a new attribute in each table to track the expiration time and enable DynamoDB Streams on each table.

Create a new attribute in each table to track the expiration time and enable time to live (TTL) on each table.

Create an Amazon CloudWatch Events event to export the data to Amazon S3 daily using AWS Data Pipeline and then truncate the Amazon DynamoDB table.

Discussion 0

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