AWS AWS Storage and Databases 4

Question 1

Which S3 storage class is designed for data that is accessed less than once a month and requires millisecond retrieval?

Accepted Answer

S3 Glacier Instant Retrieval

Answer

S3 Glacier Instant Retrieval is designed for rarely accessed archive data that still needs millisecond retrieval times.

Question 2

An application needs to store session state data with automatic expiration after 30 minutes. Which AWS service is the best fit?

Accepted Answer

Amazon DynamoDB with TTL

Answer

DynamoDB's Time to Live (TTL) feature automatically deletes items after a specified timestamp, making it ideal for session data expiration.

Question 3

What is the maximum size of a single object that can be stored in Amazon S3?

Accepted Answer

5 TB

Answer

Amazon S3 supports individual objects up to 5 TB in size; objects larger than 5 GB must use multipart upload.

Question 4

Which Amazon RDS feature automatically creates a standby replica in a different Availability Zone to improve availability?

Accepted Answer

Multi-AZ deployment

Answer

RDS Multi-AZ deployment synchronously replicates data to a standby instance in another AZ, enabling automatic failover.

Question 5

Which AWS storage service provides a fully managed Network File System (NFS) that can be mounted by multiple EC2 instances simultaneously?

Accepted Answer

Amazon EFS

Answer

Amazon EFS (Elastic File System) is a managed NFS that supports concurrent access from thousands of EC2 instances.

AWS Practice Test