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AWS Certified Solutions Architect Associate > Section 7: EC2 Instance Storage > Flashcards

Section 7: EC2 Instance Storage Flashcards

1
Q

A network drive that you can attach to your instances while they run

A

Elastic Block Store (EBS) Volume

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2
Q

True/False: EBS volumes are not bound to specific availability zones

A

False - They are bound to the availability zone they are created in

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3
Q

Attribute that can be enabled such that an EBS volume is deleted whenever the attached EC2 instance is deleted

A

Delete on Termination

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4
Q

True/False: An EBS volume must be detached in order to create an EBS snapshot

A

False - Detaching the drive is optional, but recommended

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5
Q

EBS Snapshot feature that allows you to move a snapshot to an “archive tier” that is 75% cheaper

A

EBS Snapshot Archive

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6
Q

EBS Snapshot feature that allows you to setup rules to retain deleted snapshots so that you can recover them after an accidental deletion

A

Recycle Bin for EBS Snapshots

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7
Q

EBS Snapshot feature that enables you to create a volume from a snapshot that is fully initialized at creation, thus eliminating the latency of I/O operations on a block when it is accessed for the first time

A

EBS Fast Snapshot Restore (FSR)

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8
Q

What are three types of AMIs you can launch EC2s from?

A

A public AMI
Your own AMI
An AWS Marketplace AMI

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9
Q

A physical hardware disk that can be attached to certain EC2 instances to enable extremely high disk performance (high IOPS and throughput)

A

EC2 Instance Store

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10
Q

EBS Volume Type: General purpose SSD volume that balances price and performance for a wide variety of workloads

A

gp2/gp3 (SSD)

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11
Q

EBS Volume Type: Highest-performance SSD volume for mission-critical low-latency or high-throughput workloads

A

io1/io2 (SSD)

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12
Q

EBS Volume Type: Low cost HDD volume designed for frequently accessed, throughput-intensive workloads

A

st1 (HDD) - Throughput Optimized HDD

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13
Q

EBS Volume Type: Lowest cost HDD volume designed for less frequently accessed workloads

A

sc1 (HDD) - Cold HDD

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14
Q

Which EBS volume types are the only two that can be used as boot volumes?

A

gp2/gp3 and io1/io2

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15
Q

True/False: gp2 and gp3 volumes can independently change their size and IOPS

A

False - gp2 volumes have 3 IOPS per GB while gp3 volumes can have independent configurations

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16
Q

Which EBS volume type(s) support EBS Multi-Attach?

A

io1/io2 (SSD)

17
Q

How many EC2 instances can be attached to a single EBS volume using EBS multi-attach?

A

16

18
Q

True/False: EBS volumes are automatically encrypted

A

False

19
Q

What kind of encryption does EBS encryption use?

A

AES-256

20
Q

True/False: Amazon Elastic File System is compatible with Linux and Windows based AMI

A

False - EFS is only compatible with Linux based AMI

21
Q

EFS performance mode used for latency-sensitive use cases (web server, CMS, etc.)

A

General purpose (default)

22
Q

EFS performance mode used for higher latency, throughput, and highly parallel workloads (big data, media processing, etc.)

A

Max I/O

23
Q

EFS throughput mode that allows for 50MiB/s + a burst of up to 100MiB/s on a per terabyte basis

A

Bursting throughput

24
Q

EFS throughput mode that allows you to set your throughput regardless of storage size

A

Provisioned throughput

25
Q

EFS storage tier that is used for frequently accessed files

A

Standard

26
Q

EFS storage tier that offers a lower storage cost, but charges to retrieve files

A

Infrequent access (EFS-IA)

27
Q

Configurable feature of EFS that allows you to move files between storage tiers

A

Lifecycle Policy

28
Q

EFS availability and durability option that is typically used for production environments

A

Standard: Multi-AZ

29
Q

EFS availability and durability option that is typically used for development environments; it offers default backups and is compatible with EFS One Zone-IA

A

One Zone: One AZ

30
Q

You have just terminated an EC2 instance in us-east-1a, and its attached EBS volume is now available. Your teammate tries to attach it to an EC2 instance in us-east-1b but he can’t. What is a possible cause for this?

A

EBS volumes are locked to an Availability Zone

31
Q

True/False: The root volume for an EC2 instance is flagged as “Delete on Termination” while other added volumes are not

A

True

32
Q

Which are the only EBS volumes types that can be used as boot volumes when creating an EC2 instance?

A

gp2, gp3, io1, io2

33
Q

You are running a high-performance database that requires an IOPS of 310,000 for its underlying storage. What do you recommend?

A

Use an EC2 Instance store (highest IOPS)

AWS Certified Solutions Architect Associate (19 decks)

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