Amazon Elastic Block Store (EBS)

Question 1 of 51

1. Question

An existing application stores sensitive information on a non-boot Amazon EBS data volume attached to an Amazon Elastic Compute Cloud instance. Which of the following approaches would protect the sensitive data on an Amazon EBS volume?

Upload your customer keys to AWS CloudHSM. Associate the Amazon EBS volume with AWS CloudHSM. Remount the Amazon EBS volume.
Create and mount a new, encrypted Amazon EBS volume. Move the data to the new volume. Delete the old Amazon EBS volume.
Unmount the EBS volume. Toggle the encryption attribute to True. Re-mount the Amazon EBS volume.
Snapshot the current Amazon EBS volume. Restore the snapshot to a new, encrypted Amazon EBS volume. Mount the Amazon EBS volume

Question 2 of 51

2. Question

Is it possible to access your EBS snapshots?

Yes, through the Amazon S3 APIs.
Yes, through the Amazon EC2 APIs
No, EBS snapshots cannot be accessed; they can only be used to create a new EBS volume.
EBS doesn’t provide snapshots.

Question 3 of 51

3. Question

Which of the following approaches provides the lowest cost for Amazon Elastic Block Store snapshots while giving you the ability to fully restore data?

Maintain two snapshots: the original snapshot and the latest incremental snapshot
Maintain a volume snapshot; subsequent snapshots will overwrite one another
Maintain a single snapshot the latest snapshot is both Incremental and complete
Maintain the most current snapshot, archive the original and incremental to Amazon Glacier.

Question 4 of 51

4. Question

Which procedure for backing up a relational database on EC2 that is using a set of RAIDed EBS volumes for storage minimizes the time during which the database cannot be written to and results in a consistent backup?

Detach EBS volumes, 2. Start EBS snapshot of volumes, 3. Re-attach EBS volumes
Stop the EC2 Instance. 2. Snapshot the EBS volumes
Suspend disk I/O, 2. Create an image of the EC2 Instance, 3. Resume disk I/O
Suspend disk I/O, 2. Start EBS snapshot of volumes, 3. Resume disk I/O
Suspend disk I/O, 2. Start EBS snapshot of volumes, 3. Wait for snapshots to complete, 4. Resume disk I/O

Question 5 of 51

5. Question

How can an EBS volume that is currently attached to an EC2 instance be migrated from one Availability Zone to another?

Detach the volume and attach it to another EC2 instance in the other AZ.
Simply create a new volume in the other AZ and specify the original volume as the source.
Create a snapshot of the volume, and create a new volume from the snapshot in the other AZ
Detach the volume, then use the ec2-migrate-volume command to move it to another AZ.

Question 6 of 51

6. Question

How are the EBS snapshots saved on Amazon S3?

Exponentially
Incrementally
EBS snapshots are not stored in the Amazon S3
Decrementally

Question 7 of 51

7. Question

EBS Snapshots occur _____

Asynchronously
Synchronously
Synchronously

Question 8 of 51

8. Question

What will be the status of the snapshot until the snapshot is complete?

Running
Working
Progressing
Pending

Question 9 of 51

9. Question

Before I delete an EBS volume, what can I do if I want to recreate the volume later?

Create a copy of the EBS volume (not a snapshot)
Create and Store a snapshot of the volume
Download the content to an EC2 instance
Back up the data in to a physical disk

Question 10 of 51

10. Question

Which of the following are true regarding encrypted Amazon Elastic Block Store (EBS) volumes? Choose 2 answers

Supported on all Amazon EBS volume types
Snapshots are automatically encrypted
Available to all instance types
Existing volumes can be encrypted
Shared volumes can be encrypted

Question 11 of 51

11. Question

Amazon EBS snapshots have which of the following two characteristics? (Choose 2.) Choose 2 answers

EBS snapshots only save incremental changes from snapshot to snapshot
EBS snapshots can be created in real-time without stopping an EC2 instance
EBS snapshots can only be restored to an EBS volume of the same size or smaller
EBS snapshots can only be restored and mounted to an instance in the same Availability Zone as the original EBS volume

Question 12 of 51

12. Question

A user is planning to schedule a backup for an EBS volume. The user wants security of the snapshot data. How can the user achieve data encryption with a snapshot?

Use encrypted EBS volumes so that the snapshot will be encrypted by AWS
While creating a snapshot select the snapshot with encryption
By default the snapshot is encrypted by AWS
Enable server side encryption for the snapshot using S3

Question 13 of 51

13. Question

A sys admin is trying to understand EBS snapshots. Which of the below mentioned statements will not be useful to the admin to understand the concepts about a snapshot?

Snapshot is synchronous
It is recommended to stop the instance before taking a snapshot for consistent data
Snapshot is incremental
Snapshot captures the data that has been written to the hard disk when the snapshot command was executed

Question 14 of 51

14. Question

When creation of an EBS snapshot is initiated but not completed, the EBS volume

Cannot be detached or attached to an EC2 instance until me snapshot completes
Can be used in read-only mode while me snapshot is in progress
Can be used while the snapshot is in progress
Cannot be used until the snapshot completes

Question 15 of 51

15. Question

You have a server with a 5O0GB Amazon EBS data volume. The volume is 80% full. You need to back up the volume at regular intervals and be able to re-create the volume in a new Availability Zone in the shortest time possible. All applications using the volume can be paused for a period of a few minutes with no discernible user impact. Which of the following backup methods will best fulfill your requirements?

Take periodic snapshots of the EBS volume
Use a third-party Incremental backup application to back up to Amazon Glacier
Periodically back up all data to a single compressed archive and archive to Amazon S3 using a parallelized multi-part upload
Create another EBS volume in the second Availability Zone attach it to the Amazon EC2 instance, and use a disk manager to mirror me two disks

Question 16 of 51

16. Question

A user is trying to pre-warm a blank EBS volume attached to a Linux instance. Which of the below mentioned steps should be performed by the user?

There is no need to pre-warm an EBS volume
Contact AWS support to pre-warm
Unmount the volume before pre-warming
Format the device

Question 17 of 51

17. Question

A user has created an EBS volume of 10 GB and attached it to a running instance. The user is trying to access EBS for first time. Which of the below mentioned options is the correct statement with respect to a first time EBS access?

The volume will show a size of 8 GB
The volume will show a loss of the IOPS performance the first time
The volume will be blank
If the EBS is mounted it will ask the user to create a file system

Question 18 of 51

18. Question

You are running a database on an EC2 instance, with the data stored on Elastic Block Store (EBS) for persistence At times throughout the day, you are seeing large variance in the response times of the database queries Looking into the instance with the isolate command you see a lot of wait time on the disk volume that the database’s data is stored on. What two ways can you improve the performance of the database’s storage while maintaining the current persistence of the data? Choose 2 answers

Move to an SSD backed instance
Move the database to an EBS-Optimized Instance
Use Provisioned IOPs EBS
Use the ephemeral storage on an m2.4xLarge Instance Instead

Question 19 of 51

19. Question

You have launched an EC2 instance with four (4) 500 GB EBS Provisioned IOPS volumes attached. The EC2 Instance Is EBS-Optimized and supports 500 Mbps throughput between EC2 and EBS. The two EBS volumes are configured as a single RAID 0 device, and each Provisioned IOPS volume is provisioned with 4.000 IOPS (4000 16KB reads or writes) for a total of 16,000 random IOPS on the instance. The EC2 Instance initially delivers the expected 16,000 IOPS random read and write performance Sometime later in order to increase the total random I/O performance of the instance, you add an additional two 500 GB EBS Provisioned IOPS volumes to the RAID. Each volume Is provisioned to 4,000 lOPS like the original four for a total of 24,000 IOPS on the EC2 instance Monitoring shows that the EC2 instance CPU utilization increased from 50% to 70%, but the total random IOPS measured at the instance level does not increase at all. What is the problem and a valid solution?

Larger storage volumes support higher Provisioned IOPS rates: increase the provisioned volume storage of each of the 6 EBS volumes to 1TB.
EBS-Optimized throughput limits the total IOPS that can be utilized use an EBS-Optimized instance that provides larger throughput.
Small block sizes cause performance degradation, limiting the I’O throughput, configure the instance device driver and file system to use 64KB blocks to increase throughput.
RAID 0 only scales linearly to about 4 devices, use RAID 0 with 4 EBS Provisioned IOPS volumes but increase each Provisioned IOPS EBS volume to 6.000 IOPS.
The standard EBS instance root volume limits the total IOPS rate, change the instant root volume to also be a 500GB 4,000 Provisioned IOPS volume

Question 20 of 51

20. Question

A user has deployed an application on an EBS backed EC2 instance. For a better performance of application, it requires dedicated EC2 to EBS traffic. How can the user achieve this?

Launch the EC2 instance as EBS provisioned with PIOPS EBS
Launch the EC2 instance as EBS enhanced with PIOPS EBS
Launch the EC2 instance as EBS dedicated with PIOPS EBS
Launch the EC2 instance as EBS optimized with PIOPS EBS

Question 21 of 51

21. Question

Which of the following provides the fastest storage medium?

Amazon S3
Amazon EBS using Provisioned IOPS (PIOPS)
SSD Instance (ephemeral) store
AWS Storage Gateway

Question 22 of 51

22. Question

When you view the block device mapping for your instance, you can see only the EBS volumes, not the instance store volumes.

Depends on the instance type
FALSE
Depends on whether you use API call
TRUE

Question 23 of 51

23. Question

Amazon EC2 provides a repository of public data sets that can be seamlessly integrated into AWS cloud-based applications. What is the monthly charge for using the public data sets?

A 1 time charge of 10$ for all the datasets.
1$ per dataset per month
10$ per month for all the datasets
There is no charge for using the public data sets

Question 24 of 51

24. Question

How many types of block devices does Amazon EC2 support?

1
2
3
4

Question 25 of 51

25. Question

_____ is a durable, block-level storage volume that you can attach to a single, running Amazon EC2 instance.

Amazon S3
Amazon EBS
None of these
All of these

Question 26 of 51

26. Question

Which Amazon storage do you think is the best for my database-style applications that frequently encounter many random reads and writes across the dataset?

None of these.
Amazon Instance Storage
Any of these
Amazon EBS

Question 27 of 51

27. Question

What does Amazon EBS stand for?

Elastic Block Storage
Elastic Business Server
Elastic Blade Server
Elastic Block Store

Question 28 of 51

28. Question

Which Amazon Storage behaves like raw, unformatted, external block devices that you can attach to your instances?

None of these.
Amazon Instance Storage
Amazon EBS
All of these

Question 29 of 51

29. Question

A user has created numerous EBS volumes. What is the general limit for each AWS account for the maximum number of EBS volumes that can be created?

10000
5000
100
1000

Question 30 of 51

30. Question

Select the correct set of steps for exposing the snapshot only to specific AWS accounts

Select Public for all the accounts and check mark those accounts with whom you want to expose the snapshots and click save.
Select Private and enter the IDs of those AWS accounts, and click Save.
Select Public, enter the IDs of those AWS accounts, and click Save.
Select Public, mark the IDs of those AWS accounts as private, and click Save.

Question 31 of 51

31. Question

If an Amazon EBS volume is the root device of an instance, can I detach it without stopping the instance?

Yes but only if Windows instance
No
Yes
Yes but only if a Linux instance

Question 32 of 51

32. Question

Can we attach an EBS volume to more than one EC2 instance at the same time?

Yes
No
Only EC2-optimized EBS volumes.
Only in read mode.

Question 33 of 51

33. Question

Do the Amazon EBS volumes persist independently from the running life of an Amazon EC2 instance?

Only if instructed to when created
Yes
No

Question 34 of 51

34. Question

Can I delete a snapshot of the root device of an EBS volume used by a registered AMI?

Only via API
Only via Console
Yes
No

Question 35 of 51

35. Question

By default, EBS volumes that are created and attached to an instance at launch are deleted when that instance is terminated. You can modify this behavior by changing the value of the flag_____ to false when you launch the instance

DeleteOnTermination
RemoveOnDeletion
RemoveOnTermination
TerminateOnDeletion

Question 36 of 51

36. Question

Your company policies require encryption of sensitive data at rest. You are considering the possible options for protecting data while storing it at rest on an EBS data volume, attached to an EC2 instance. Which of these options would allow you to encrypt your data at rest? (Choose 3 answers)

Implement third party volume encryption tools
Do nothing as EBS volumes are encrypted by default
Encrypt data inside your applications before storing it on EBS
Encrypt data using native data encryption drivers at the file system level
Implement SSL/TLS for all services running on the server

Question 37 of 51

37. Question

Which of the following are true regarding encrypted Amazon Elastic Block Store (EBS) volumes? Choose 2 answers

Supported on all Amazon EBS volume types
Snapshots are automatically encrypted
Available to all instance types
Existing volumes can be encrypted
Shared volumes can be encrypted

Question 38 of 51

38. Question

How can you secure data at rest on an EBS volume?

Encrypt the volume using the S3 server-side encryption service
Attach the volume to an instance using EC2’s SSL interface.
Create an IAM policy that restricts read and write access to the volume.
Write the data randomly instead of sequentially.
Use an encrypted file system on top of the EBS volume

Question 39 of 51

39. Question

A user has deployed an application on an EBS backed EC2 instance. For a better performance of application, it requires dedicated EC2 to EBS traffic. How can the user achieve this?

Launch the EC2 instance as EBS dedicated with PIOPS EBS
Launch the EC2 instance as EBS enhanced with PIOPS EBS
Launch the EC2 instance as EBS dedicated with PIOPS EBS
Launch the EC2 instance as EBS optimized with PIOPS EBS

Question 40 of 51

40. Question

A user is trying to launch an EBS backed EC2 instance under free usage. The user wants to achieve encryption of the EBS volume. How can the user encrypt the data at rest?

Use AWS EBS encryption to encrypt the data at rest
User cannot use EBS encryption and has to encrypt the data manually or using a third party tool
The user has to select the encryption enabled flag while launching the EC2 instance
Encryption of volume is not available as a part of the free usage tier

Question 41 of 51

41. Question

A user is planning to schedule a backup for an EBS volume. The user wants security of the snapshot data. How can the user achieve data encryption with a snapshot?

Use encrypted EBS volumes so that the snapshot will be encrypted by AWS
While creating a snapshot select the snapshot with encryption
By default the snapshot is encrypted by AWS
Enable server side encryption for the snapshot using S3

Question 42 of 51

42. Question

A user has launched an EBS backed EC2 instance. The user has rebooted the instance. Which of the below mentioned statements is not true with respect to the reboot action?

The private and public address remains the same
The Elastic IP remains associated with the instance
The volume is preserved
The instance runs on a new host computer

Question 43 of 51

43. Question

A user has launched an EBS backed EC2 instance. What will be the difference while performing the restart or stop/start options on that instance?

For restart it does not charge for an extra hour, while every stop/start it will be charged as a separate hour
Every restart is charged by AWS as a separate hour, while multiple start/stop actions during a single hour will be counted as a single hour
For every restart or start/stop it will be charged as a separate hour
For restart it charges extra only once, while for every stop/start it will be charged as a separate hour

Question 44 of 51

44. Question

A user has launched an EBS backed instance. The user started the instance at 9 AM in the morning. Between 9 AM to 10 AM, the user is testing some script. Thus, he stopped the instance twice and restarted it. In the same hour the user rebooted the instance once. For how many instance hours will AWS charge the user?

3 hours
4 hours
2 hours
1 hour

Question 45 of 51

45. Question

You are running a database on an EC2 instance, with the data stored on Elastic Block Store (EBS) for persistence At times throughout the day, you are seeing large variance in the response times of the database queries Looking into the instance with the isolate command you see a lot of wait time on the disk volume that the database’s data is stored on. What two ways can you improve the performance of the database’s storage while maintaining the current persistence of the data? Choose 2 answers

Move to an SSD backed instance
Move the database to an EBS-Optimized Instance
Use Provisioned IOPs EBS
Use the ephemeral storage on an m2.4xLarge Instance Instead

Question 46 of 51

46. Question

An organization wants to move to Cloud. They are looking for a secure encrypted database storage option. Which of the below mentioned AWS functionalities helps them to achieve this?

AWS MFA with EBS
AWS EBS encryption
Multi-tier encryption with Redshift
AWS S3 server-side storage

Question 47 of 51

47. Question

A user has stored data on an encrypted EBS volume. The user wants to share the data with his friend’s AWS account. How can user achieve this?

Create an AMI from the volume and share the AMI
Copy the data to an unencrypted volume and then share
Take a snapshot and share the snapshot with a friend
If both the accounts are using the same encryption key then the user can share the volume directly

Question 48 of 51

48. Question

EC2 EBS-backed (EBS root) instance is stopped, what happens to the data on any ephemeral store volumes?

Data is automatically saved in an EBS volume.
Data is unavailable until the instance is restarted.
Data will be deleted and will no longer be accessible.
Data is automatically saved as an EBS snapshot.

Question 49 of 51

49. Question

When an EC2 instance that is backed by an S3-based AMI is terminated, what happens to the data on the root volume?

Data is automatically saved as an EBS snapshot.
Data is automatically saved as an EBS volume.
Data is unavailable until the instance is restarted.
Data is automatically deleted.

Question 50 of 51

50. Question

Which of the following will occur when an EC2 instance in a VPC (Virtual Private Cloud) with an associated Elastic IP is stopped and started? (Choose 2 answers)

The Elastic IP will be dissociated from the instance
All data on instance-store devices will be lost
All data on EBS (Elastic Block Store) devices will be lost
The ENI (Elastic Network Interface) is detached
The underlying host for the instance is changed

Question 51 of 51

51. Question

Which of the following provides the fastest storage medium?

Amazon S3
Amazon EBS using Provisioned IOPS (PIOPS)
SSD Instance (ephemeral) store
AWS Storage Gateway

Amazon Elastic Block Store (EBS)