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Exam AWS Certified SysOps Administrator - Associate topic 1 question 61 discussion

Exam question from Amazon's AWS Certified SysOps Administrator - Associate
Question #: 61
Topic #: 1
[All AWS Certified SysOps Administrator - Associate Questions]

A company has a stateful, long-running workload on a single xlarge general purpose Amazon EC2 On-Demand Instance Metrics show that the service is always using 80% of its available memory and 40% of its available CPU. A SysOps administrator must reduce the cost of the service without negatively affecting performance.
Which change in instance type will meet these requirements?

  • A. Change to one large compute optimized On-Demand Instance.
  • B. Change to one large memory optimized On-Demand Instance.
  • C. Change to one xlarge general purpose Spot Instance.
  • D. Change to two large general purpose On-Demand Instances.
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by kati2k22cz at Sept. 4, 2022, 12:24 a.m.
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AAAaat
Highly Voted 2 years, 1 month ago
Selected Answer: B
B because it is a stateful long running work load
upvoted 12 times
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xdkonorek2
Most Recent 9 months, 3 weeks ago
Selected Answer: B
in general vcpu/memory(GiB) ratios for: general purpose: 1/2 memory optimized: 1/4 compute optimized: 1/2 example: cheapest non burstable GP: m6g.xlarge 4vpcu, 16GiB, price: 0.154 cheapest memory optimized: r6g.large 2vcpi, 16GiB, price: 0.1008 anticipated outcome: 80% cpu, 80% mem, 35% cost savings
upvoted 3 times
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michaldavid
1 year, 10 months ago
Selected Answer: B
BBBBBBBB
upvoted 2 times
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tyfta6
1 year, 11 months ago
Isn't x-Large vs large has bigger ram size?
upvoted 1 times
jipark
1 year, 2 months ago
"A memory optimized instance type would provide more memory resources." because 80% memory already used, memory optimized is needed
upvoted 2 times
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Surferbolt
2 years ago
Selected Answer: B
B. CPU utilisation is rather low for using an xlarge instance, so a memory optimized large instance is a cheaper option that should meet the workload requirements.
upvoted 1 times
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kati2k22cz
2 years, 2 months ago
Selected Answer: C
For me its C. You can reduce teh cost using a spot instance. Here more about spot instance https://www.amazonaws.cn/en/ec2/spot-instances/faqs/
upvoted 3 times
CiCa560
2 years, 2 months ago
Questions states - reduce the cost of the service without negatively affecting performance. Using a Spot Instance may affect performance, if it terminates with only a 2 min warning. The stats state the load is Memory intensive, so B looks to be most suitable.
upvoted 7 times
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