Attach EC2 Instances for Data Storage

Answer - B.

The AWS Documentation mentions the following on EBS Volumes:

An Amazon EBS volume is a durable, block-level storage device that you can attach to a single EC2 instance.

You can use EBS volumes as primary storage for data that requires frequent updates, such as the system drive for an instance or storage for a database application.

For more information on EBS Volumes, please refer to the below URL:

Of the given options, only Amazon EBS volumes and Amazon EBS snapshots can be attached to EC2 instances to store data.

Amazon EBS (Elastic Block Store) is a block-level storage service that is used to create persistent block-level storage volumes for Amazon EC2 instances. Amazon EBS volumes can be attached to EC2 instances and used as primary storage for data that requires frequent and fast access.

Amazon EBS volumes are highly available and durable, and they can be backed up using Amazon EBS snapshots. Amazon EBS snapshots are point-in-time copies of an Amazon EBS volume, stored in Amazon S3. They can be used for data backup, recovery, and migration.

Amazon Glacier, on the other hand, is a low-cost, long-term storage service that is optimized for infrequently accessed data. It is not recommended for storing data that requires frequent access.

Amazon SQS (Simple Queue Service) is a fully managed message queuing service that enables decoupling and scaling of distributed systems. It is not used for storing data in the traditional sense.

Therefore, the correct options are B. Amazon EBS Volumes and C. Amazon EBS Snapshots.