AWS AWS Database Services 2

Question 1

Which Amazon RDS feature creates a synchronous standby replica in a different Availability Zone for high availability?

Accepted Answer

Multi-AZ deployment

Answer

Multi-AZ deployment maintains a synchronous standby replica in another AZ for automatic failover.

Question 2

What is the primary purpose of Amazon RDS Read Replicas?

Accepted Answer

Offloading read traffic to scale read performance

Answer

Read Replicas use asynchronous replication to scale read-heavy workloads.

Question 3

Which DynamoDB capacity mode automatically scales to accommodate traffic without manual provisioning?

Accepted Answer

On-demand mode

Answer

On-demand mode scales capacity automatically and charges per request.

Question 4

What does Amazon ElastiCache primarily provide?

Accepted Answer

In-memory caching layer

Answer

ElastiCache provides managed in-memory caching using Redis or Memcached.

Question 5

Which AWS database service is purpose-built for petabyte-scale data warehousing and analytics?

Accepted Answer

Amazon Redshift

Answer

Redshift is a columnar, MPP data warehouse for analytical queries at scale.

AWS Practice Test