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Exam AWS-SysOps topic 1 question 717 discussion

Exam question from Amazon's AWS-SysOps
Question #: 717
Topic #: 1
[All AWS-SysOps Questions]

A SysOps Administrator is responsible for a legacy, CPU-heavy application. The application can only be scaled vertically. Currently, the application is deployed on a single t2.large Amazon EC2 instance. The system is showing 90% CPU usage and significant performance latency after a few minutes.
What change should be made to alleviate the performance problem?

  • A. Change the Amazon EBS volume to Provisioned IOPs.
  • B. Upgrade to a compute-optimized instance.
  • C. Add additional t2.large instances to the application.
  • D. Purchase Reserved Instances.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by lui at Nov. 18, 2019, 2:23 p.m.
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lui
Highly Voted 3 years, 1 month ago
should be B.
upvoted 19 times
fromnowhere
2 years, 5 months ago
that would be vertical scaling which is not possible in this scenario
upvoted 1 times
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Madaan
Highly Voted 2 years, 10 months ago
Selected Answer: C
Donm't know why everyone is saying B when the question specifically mentions that vertical scaling is not possible. Or have I misunderstood anything?
upvoted 5 times
aidenpearce01
2 years, 7 months ago
just change the instance type but keep the same CPU and MEMORY, i think
upvoted 1 times
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e45af42
Most Recent 4 months, 3 weeks ago
Selected Answer: B
Why so much confusion? B is the answer, we have scenario with vertical scaling only.
upvoted 1 times
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albert_kuo
1 year, 3 months ago
Selected Answer: B
The current t2.large instance type may not be sufficient to handle the CPU-intensive workload and is exhibiting high CPU usage and performance latency. Upgrading to a compute-optimized instance type, such as the C5 or M5 instance family, would provide higher CPU performance and better handle the workload requirements. Compute-optimized instances are designed for workloads that require a high amount of computational power and can deliver a higher CPU-to-memory ratio. These instances offer superior performance for CPU-intensive applications and are a suitable choice for alleviating performance issues in this scenario.
upvoted 1 times
albert_kuo
1 year, 2 months ago
keyword is "The application can only be scaled vertically"
upvoted 1 times
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task_7
1 year, 8 months ago
Selected Answer: B
t is general purpose, changing it compute optimized will helps
upvoted 1 times
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gulu73
1 year, 8 months ago
Selected Answer: B
answer is B
upvoted 1 times
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softarts
2 years, 2 months ago
I saw this question somewhere, should be "The application can only be scaled vertically" hence the answer is B
upvoted 1 times
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FHU
2 years, 7 months ago
Letter (A) is the correct answer. This is a very tricky question. I don't know why you guys disconsidered letter (A). My observations in real webservers says that when we have high DISK latency, processing individual tasks could take much much longer. In high concurrency systems, a task taking longer means that you will end up having more parallel tasks being executed at the same time. With such a scenario, with parallel tasks being accumulated because of disk latency, the CPU usage will increase. So, disk latency could be a real CPU killer. Letter (B) is a good solution, but it is vertical scalling. The question states that it can not be vertical scalled. So, I am taking this out.
upvoted 2 times
Akinwaleo
1 year, 5 months ago
Am I reading the question wrongly?...it says "The application CAN ONLY BE SCALED VERTICALLY."
upvoted 1 times
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asfsdfsdf
2 years, 8 months ago
Selected Answer: C
Please read the question again: "Vertical scaling is not possible with this application. " Hence its not an option to change the instance type! Since its a CPU issue A and D are irrelevant - Will go with C.
upvoted 4 times
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TroyMcLure
2 years, 12 months ago
Correct Answer: B Upgrading to a compute-optimized instance is vertical scaling.
upvoted 1 times
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RicardoD
3 years ago
B is the answer
upvoted 1 times
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abhishek_m_86
3 years ago
B. Upgrade to a compute-optimized instance. Seem correct
upvoted 3 times
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tahaRyski
3 years ago
Since its CPU heavy and can only be scaled vertically, the B is the only viable option
upvoted 2 times
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jackdryan
3 years ago
I'll go with B
upvoted 2 times
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MFDOOM
3 years ago
B. Upgrade to a compute-optimized instance. Only sensible response
upvoted 2 times
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waterzhong
3 years ago
B is the only suitable answer. It can only be scaled VERTICALLY
upvoted 1 times
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professor
3 years ago
Vertical scaling Ans is B
upvoted 2 times
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