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A Cloud Guru - AWS SysOps Administrator Associate (2019) > EC2 Volume Types > Flashcards

EC2 Volume Types Flashcards

1
Q

What is the difference between instance volumes and EBS volumes?

A

Instance is ephemeral, EBS is persistant.

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2
Q

What 2 types of volumes are there?

A 
Root Volume (where the OS is installed)
Additional Volumes (D:\, E:\, F:\, or /dev/sdb, /dev/sdc, /dev/sdd, etc
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3
Q

True or False: a root device can be either an EBS volume or an instance?

A

True

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4
Q

What is the maximum volume size for an instance store?

A

10GB

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5
Q

What is the maximum volume size for an EBS volume?

A

1 or 2Tb, depending on the OS

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6
Q

Are root volumes deleted by default upon EC2 termination?

A

Yes.

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7
Q

How do you prevent an EBS backed root volume from being deleted upon EC2 termination using the console?

A

unselect the “Delete on Termination” option upon instance creation.

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8
Q

How do you prevent a root volume from being deleted upon EC2 termination using CLI?

A

Set the deleteontermination flag to false.

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9
Q

True or false: Additional volume types (non-root) are preserved upon instance termination?

A

True

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10
Q

True or false: Upon EC2 instance creation, you can prevent instance-store backed root volume from deletion upon EC2 termination?

A

False. Instance-store backed root volumes cannot modify the Delete on Termination configuration, and will be deleted upon EC2 termination.

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11
Q

True or False: rebooting an instance results in the loss of instance store data?

A

False

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12
Q

under what circumstances will data on an instance store be lost?

A

Failure of the underlying drive
Stopping the instance
terminating the instance

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13
Q

True of false: It is best practice to not use instance store volumes for production data uses?

A

True. Use replication strategies, S3, or EBS volumes

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14
Q

Can you upgrade an instance-store backed EC2 instance?

A

No. Since you cannot stop the instance, you cannot make modifications that require stopping the instance.

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15
Q

Can you modify an EC2 instance’s Delete on Termination atrribute after the instance has been launched?

A

No, this must be set at launch.

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16
Q

True or False: additional volumes delete automatically upon instance termination?

A

False. They persist after termination and must be deleted manually

17
Q

True or False: ECS instances and the EBS volume to be attached must be in the same AZ?

A

True.

18
Q

True or False: you can only change volume types of Standard (Magnetic) storage?

A

False: In fact, you change all volume types EXCEPT magnetic.

19
Q

Steps to duplicate an EBS volume in another AZ

A
  1. Create a snapshot of the volume
  2. Create a new volume from the snapshot.
  3. Choose the desired AZ from the menu
20
Q

Steps to duplicate an EBS volume in another region

A
  1. Create a snapshot of the volume

2. Copy the snapshot to the desired region

21
Q

Can you create an AMI image from an EBS snapshot?

A

Yes.

22
Q

What is an EBS volume?

A

Virtual hard disk

23
Q

Where are snapshots held?

A

S3.

24
Q

True or False: Snapshots are incremental?

A

True. Only blocks that have changed will be copied since the last snapshot.

25
Q

Is your first snapshot created immediately?

A

No. The first snapshot may take some time to create.

26
Q

When creating a snapshot of a root volume, should you stop the instance first?

A

Yes. If you don’t, it can create latency

27
Q

Can you create a snapshot of the root volume while the instance is on?

A

Yes. However, it is best practice to stop the instance.

28
Q

True or False: Snapshots of encrypted volumes are encrypted automatically?

A

True

29
Q

True or false: Volumes restored from encrypted snapshots are encrypted automatically?

A

True

30
Q

True or False: Encrypted snapshots can be shared with the public, or other AWS accounts?

A

False. Snapshots must be decrypted to share.

A Cloud Guru - AWS SysOps Administrator Associate (2019) (62 decks)

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