AWS Week4p2

What is the difference between Simple Storage Service (S3) and Elastic Block Store (EBS)?

• EBS stores objects, while S3 stores snapshots.

• EBS stores volumes, while S3 stores objects.

• EBS stores objects, while S3 stores volumes.

• EBS stores snapshots, while S3 stores volumes.

Answer explanation

S3 is an object storage service, while EBS is a block storage service that stores volumes and snapshots.

Which tasks can S3 object life cycle configurations perform automatically?

Each correct answer represents a complete solution. Choose three.

• Deleting old object versions

• Moving objects to a different storage class

• Deleting old buckets

• Deleting old objects

• Moving objects to an EBS volume

While creating an S3 bucket named documents, AWS informs you that the bucket name is already in use. What should you do in order to create a bucket?

• Use a globally unique bucket name.

• Use a different storage class.

• Use a unique bucket name in that region.

• Use a different region.

Answer explanation

You should use a different name instead of documents, that is globally unique, to create a bucket. Simple Storage Service (S3) uses buckets to store objects. S3 bucket names must be globally unique across AWS, irrespective of region.

You have stored an object A on S3. You are planning to store the same object A once again on S3 with few changes. Which of the following should be used to maintain both the copies of the object A?

• Enable Glacier.

• Enable encryption.

• Enable versioning.

• Ensure durability.

Answer explanation

You need to enable versioning on the Simple Storage Service (S3) bucket to maintain both the copies of the object A. It will keep the object A's first version and second version. It is not enabled by default at the time of bucket creation.

You have stored web application HTML files on the S3 bucket. The web application should be available to everyone with Internet access. How the bucket policy should be set?

• By applying the read-only policy for the bucket for everyone

• By allowing access from specific AWS service only

• By allowing access from a specific account

• By applying the read/write permissions for the bucket to everyone

Answer explanation

The bucket policy should be set by applying the read-only policy for the bucket for everyone. It means all the web pages are available to everyone for read-only purposes. Internet users do not have permissions to modify the objects.