Sec. 6: EC2 Instance Storage

Which EC2 Storage would you use to create a shared network file system for your EC2 Instances?

• EBS Volume

• EC2 Instance Store

• EBS Snapshots

• EFS

Answer explanation

Amazon EFS is a fully managed service that makes it easy to set up, scale, and cost-optimize file storage in the Amazon Cloud.

Which service can be used to automate image management processes?

• AMI

• EC2 Image Builder

• EBS Snapshots

• IAM

Answer explanation

EC2 Image Builder is an automated pipeline for the creation, maintenance, validation, sharing, and deployment of Linux or Windows images for use on AWS and on-premises.

Which of the following is a fully managed native Microsoft Windows file system?

• EFS

• FSx

• EBS

Answer explanation

Amazon FSx makes it easy and cost effective to launch and run popular file systems that are fully managed by AWS. It comes in two offerings: FSx for Windows File Server (used for business applications), and FSx for Lustre (used for high-performance computing).

What are AMIs NOT used for?

• Add your own software license

• Add your own configuration

• Add your own operating-system

• Add your own IP addresses

Answer explanation

You cannot use AMIs to add your IP addresses. IP addresses are added to an instance as you create it.

EBS Volumes CANNOT be attached to multiple EC2 instances at a time.

• True

• False

Answer explanation

EBS Volumes can be attached to only one EC2 Instance at a time, but EC2 Instances can have multiple EBS Volumes attached to them.

An EBS Volume is a network drive you can attach to your instances while they run, so your instances' data persist even after their termination.

• True

• False

Answer explanation

EBS Volumes allows instances' data to persist even after their termination.

This was discussed in Lecture 50: EBS Overview

Which statement is CORRECT regarding EC2 Instance Store?

• It is not good to use as a disk to cache content

• It has a better I/O performance, but the data is lost if the EC2 Instance is terminated

• Your data is always safe with EC2 Instance Store

Answer explanation

EC2 Instance Store has a better I/O performance, but data is lost if: the EC2 instance is stopped or terminated, or when the underlying disk drive fails.

This was discussed in Lecture 59: EC2 Instance Store

What is an EBS Snapshot?

• The operating-system on an EC2 Instance

• A backup of your EBS Volume at a point in time

• The amount of CPU and RAM of an EC2 Instance

Answer explanation

EBS Snapshots are used to backup data on your EBS Volumes at a point in time.

Where can you find a third party's AMI so you can use it to launch your EC2 Instance?

• Public AMIs

• My own AMIs

• AWS Marketplace AMIs

Answer explanation

You can use AWS Marketplace AMIs to use someone else's AMI.

What is an EBS Volume tied to?

• A region

• A data center

• An edge location

• An availability zone

Answer explanation

EBS Volumes are tied to only one availability zone.