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Exam AWS-SysOps topic 1 question 34 discussion

Exam question from Amazon's AWS-SysOps
Question #: 34
Topic #: 1
[All AWS-SysOps Questions]

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 two.)

  • A. Move to an SSD backed instance
  • B. Move the database to an EBS-Optimized Instance
  • C. T Use Provisioned IOPs EBS
  • D. Use the ephemeral storage on an m2 4xiarge Instance Instead
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Suggested Answer: BC 🗳️
by newbie2019 at Oct. 28, 2019, 12:26 a.m.
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newbie2019
Highly Voted 7 months, 1 week ago
Another question badly written. What is the current volume type??!
upvoted 7 times
exequielrafaela
6 months, 1 week ago
I was wondering the same. But as stated by @kenkct since EBS-optimized already implies SSD (GP2), and provisioning IOPS SSD, results in a better answer when you are strictly focus on IOPS.
upvoted 2 times
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RicardoD
Most Recent 5 months, 4 weeks ago
B | C are the answers. This is clearly Performance problem. One can solve it by using EBS–optimized instance, which uses an optimized configuration stack and provides additional, dedicated capacity for Amazon EBS I/O. This optimization provides the best performance for your EBS volumes by minimizing contention between Amazon EBS I/O and other traffic from your instance. (B) or Use provisioned IOPS volumes, backed by solid-state drives (SSDs) and are the highest performance EBS volumes designed for critical, I/O intensive database applications (C)
upvoted 3 times
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fagas
6 months, 2 weeks ago
why not . Move to an SSD backed instance
upvoted 2 times
kenkct
6 months, 2 weeks ago
I was thinking the same (SSD), but because ebs-optimized already in SSD (GP2), and provisioning IOPS SSD, thus it become a better answer when you are focus on IOPS.
upvoted 3 times
newjoinerv2
6 months ago
Why not A and C?
upvoted 2 times
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gretch
6 months, 3 weeks ago
BC https://dzone.com/articles/when-amazon-ebs-optimized
upvoted 1 times
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sardarfine1
7 months ago
A and D https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-volume-types.html
upvoted 1 times
sardarfine1
6 months, 3 weeks ago
I take that back.
upvoted 1 times
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awscertified
7 months ago
B. Move the database to an EBS-Optimized Instance C. T Use Provisioned IOPs EBS
upvoted 2 times
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