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 Dec 11, 2023
Total Questions : 324

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Questions 4

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

Questions 5

A database specialist manages a critical Amazon RDS for MySQL DB instance for a company. The data stored daily could vary from .01% to 10% of the current database size. The database specialist needs to ensure that the DB instance storage grows as needed.

What is the MOST operationally efficient and cost-effective solution?

Options:

Configure RDS Storage Auto Scaling.

Configure RDS instance Auto Scaling.

Modify the DB instance allocated storage to meet the forecasted requirements.

Monitor the Amazon CloudWatch FreeStorageSpace metric daily and add storage as required.

Discussion 0

Questions 6

A gaming company is evaluating Amazon ElastiCache as a solution to manage player leaderboards. Millions of players around the world will complete in annual tournaments. The company wants to implement an architecture that is highly available. The company also wants to ensure that maintenance activities have minimal impact on the availability of the gaming platform.

Which combination of steps should the company take to meet these requirements? (Choose two.)

Options:

Deploy an ElastiCache for Redis cluster with read replicas and Multi-AZ enabled.

Deploy an ElastiCache for Memcached global datastore.

Deploy a single-node ElastiCache for Redis cluster with automatic backups enabled. In the event of a failure, create a new cluster and restore data from the most recent backup.

Use the default maintenance window to apply any required system changes and mandatory updates as soon as they are available.

Choose a preferred maintenance window at the time of lowest usage to apply any required changes and mandatory updates.

Discussion 0

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Questions 7

A database specialist was alerted that a production Amazon RDS MariaDB instance with 100 GB of storage was out of space. In response, the database specialist modified the DB instance and added 50 GB of storage capacity. Three hours later, a new alert is generated due to a lack of free space on the same DB instance. The database specialist decides to modify the instance immediately to increase its storage capacity by 20 GB.

What will happen when the modification is submitted?

Options:

The request will fail because this storage capacity is too large.

The request will succeed only if the primary instance is in active status.

The request will succeed only if CPU utilization is less than 10%.

The request will fail as the most recent modification was too soon.

Discussion 0

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