EBS

Question 1

What does EBS stand for?

Answer 1

Elastic Block Storage

Question 2

What can EBS volumes be used for?

Answer 2

create a file system, run a database, run an operating system, store data, install applications

Question 3

What is gp2 for?

Answer 3

boot volumes or development and test applications that are not latency sensitive

Question 4

What is gp3 good for?

Answer 4

require high performance at low cost such as MySQL, Cassandra, virtual desktops

Question 5

If somethings requires more than 16000 IOPs, what type of EBS should you think of?

Answer 5

IO1 or IO2

Question 6

What is IOP?

Answer 6

the standard measure of I/O read and write operations per second.

Question 7

What is I/O?

Answer 7

input/outut

Question 8

What are the two kinds of SDD?

Answer 8

gp2/gp3 and io1/io2

Question 9

What is sc1?

Answer 9

A cold hard disk drive

Question 10

What is the cheapest EBS option?

Answer 10

sc1

Question 11

What does throughput measure?

Answer 11

The number of megabits (Mb) per second

Question 12

If you are looking at data warehousing, data analytics, etc, what should you use?

Answer 12

throughput optimized HDD (st1)

Question 13

If you are looking at something transactional in nature, what should you use?

Answer 13

Provisioned IOPs SSD (io1/io2)

Question 14

What is EBS?

Answer 14

a highly available and highly scalable storage volume you can attach to an EC2 instance

Question 15

What does ETL stand for?

Answer 15

Extract, transform, load

Question 16

What are the HDD volume options?

Answer 16

throughput optimized HDD (st1) and cold HDD (sc1)

Question 17

What is a computer’s primary storage?

Answer 17

Memory

Question 18

How many volumes does an EC2 instance require?

Answer 18

1

Question 19

What is the root device volume?

Answer 19

The volume that the EC2 instance needs to operate

Question 20

Where are snapshots stored?

Answer 20

S3

Question 21

What is a snapshot?

Answer 21

A point-in-time copy of a volume

Question 22

What does it mean that snapshots are incremental?

Answer 22

Only the data that has changed since your last snapshot are moved to S3.

Question 23

What is recommended to get a good snapshot? Why is this required?

Answer 23

Stop the instance. Snapshot only captures data that has been written to your EBS volume, which may exclude any data that has been locally cached

Question 24

If a snapshot is done on an encrypted EBS volume, is the snapshot automatically encrypted as well?

Answer 24

Yes

Question 25

Where can you share snapshots without copying them?

Answer 25

Only within the same region

Question 26

Why are EBS volumes and their corresponding EC2 instances in different availability zones?

Answer 26

They are not, they are in the same availability zone

Question 27

What is required to resize a EBS volume on an initiated EC2 instance?

Answer 27

Extend file system in the OS

Question 28

Can you change volume types without stopping the instance?

Answer 28

Yes

Question 29

What industry standard algorithm does EBS encrypt your volumes with?

Answer 29

AES-256

Question 30

What impact does encryption have on latency?

Answer 30

minimal impact

Question 31

Are root volumes unable to be encrypted upon creation?

Answer 31

No, they can be encrypted upon creation

Question 32

Can you encrypt a copied, unencrypted snapshot?

Answer 32

Yes

Question 33

What does SDD stand for?

Answer 33

Solid disk drive

Question 34

In general, what is an SDD?

Answer 34

SSD's store data permanently inside an integrated circuit, typically using flash memory

Question 35

What is AWS EFS?

Answer 35

A managed network file system (NFS) that can be mounted on many EC2 instance types

Question 36

Can EFS work with multiple EC2 instances in different availability zones?

Answer 36

Yes, EFS can be shared storage

Question 37

What are two common use cases for EFS?

Answer 37

Content management (because easy to share content between EC2 instances) and web servers

Question 38

What are the two storage tiers for EFS?

Answer 38

EFS standard access and EFS infrequent access

Question 39

What is AWS FSx for windows?

Answer 39

A fully managed native Microsoft Windows file system

Question 40

What is AWS FSx for Lustre?

Answer 40

A fully managed file system that is optimized for compute intensive workloads

Question 41

Can FSx for Lustre store directly onto S3?

Answer 41

Yes

Question 42

What is an AMI?

Answer 42

An Amazon machine image provides the information required to launch an instance

Question 43

What can you base your AMI on?

Answer 43

Region, operating system, architecture, launch permissions, and storage for the root device

Question 44

What are instance stores also called?

Answer 44

Ephemeral storage

Question 45

If an instance is deleted with instance store volume/s, what happens to the data?

Answer 45

It is lost

Question 46

Can EBS volume backed instances or instance storage backed instances be stopped?

Answer 46

EBS volume backed instances

Question 47

What is AWS Backup?

Answer 47

AWS Backup allows you to consolidate your backups across multiple AWS services such as EC2, EBS, EFS, Amazon FSx, and AWS Storage Gateway

Question 48

What are the benefits of AWS backup?

Answer 48

Central management, automation, and improved compliance

Question 49

What is a good storage option for something that requires concurrent access across thousands of instances and can handle high performance computing?

Answer 49

Amazon FSx Lustre

Question 50

What must EC2 instances share to exchange an EBS volume?

Answer 50

AZ

Question 51

Are AMI’s region specific?

Answer 51

Yes

Question 52

Are EBS volumes encrypted by default?

Answer 52

No