Amazon Exam SOA-C02 Topic 1 Question 76 Discussion

Actual exam question for Amazon's SOA-C02 exam

Question #: 76
Topic #: 1

A company has a cluster of Linux Amazon EC2 Spot Instances that read many files from and write many files to attached Amazon Elastic Block Store (Amazon EBS) volumes. The EC2 instances are frequently started and stopped. As part of the process when an EC2 instance starts, an EBS volume is restored from a snapshot.

EBS volumes that are restored from snapshots are experiencing initial performance that is lower than expected. The company's workload needs almost all the provisioned IOPS on the attached EBS volumes. The EC2 instances are unable to support the workload when the performance of the EBS volumes is too low. A SysOps administrator must implement a solution to ensure that the EBS volumes provide the expected performance when they are restored from snapshots.

Which solution will meet these requirements?

AConfigure fast snapshot restore (FSR) on the snapshots that are used.

BRestore each snapshot onto an unencrypted EBS volume. Encrypt the EBS volume when the performance stabilizes.

CFormat the EBS volumes as XFS file systems before restoring the snapshots.

DIncrease the Linux read-ahead buffer to 1 MiB.

Show Suggested Answer

Suggested Answer: A

by Carin at Jul 27, 2023, 11:18 PM

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Lino

29 days ago

Fast snapshot restore is the only option that actually addresses the core issue. The rest are just Band-Aids.

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Barney

1 months ago

Encrypt the volumes? Why would that help with the initial performance problems? Sounds like a waste of time.

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Fletcher

1 months ago

Increasing the read-ahead buffer? That's a bit of a random suggestion. I don't think that's going to solve the performance issues here.

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Leonor

4 days ago

That's a good idea. Pre-warming should help improve the performance.

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Venita

13 days ago

Use the pre-warming feature to initialize the EBS volumes before attaching them.

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3 months ago

I think option A) Configure fast snapshot restore (FSR) on the snapshots that are used would be the best solution.

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