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Exam AWS-SysOps topic 1 question 865 discussion

Exam question from Amazon's AWS-SysOps
Question #: 865
Topic #: 1
[All AWS-SysOps Questions]

A sysops administrator set up an Amazon ElastiCache for Memcached cluster for an application. During testing, the application experiences increased latency.
Amazon CloudWatch metrics for the Memcached cluster show CPUUtilization is consistently above 95% and FreeableMemory is consistently under 1 MB.
Which action will solve the problem?

  • A. Configure ElastiCache automatic scaling for the Memcached cluster. Set the CPUUtilization metrics as a scaling trigger above 75% and FreeableMemory below 10 MB.
  • B. Configure ElastiCache read replicas for each Memcached node in different Availability Zones to distribute the workload.
  • C. Deploy an Application Load Balancer to distribute the workload to Memcached cluster nodes.
  • D. Replace the Memcached cluster and select a node type that has a higher CPU and memory.
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Suggested Answer: D 🗳️
Reference:
https://docs.amazonaws.cn/en_us/AmazonElastiCache/latest/mem-ug/memcached-ug.pdf
by Newguru2020 at Nov. 1, 2020, 9:22 p.m.
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Newguru2020
Highly Voted 2 years, 7 months ago
Ans: D There are only two ways to increase Memcached capacity: Horizontal scaling (add more nodes to cluster) and Vertical Scaling (Increase Node size). In the given options, D is valid. Remember, to scale vertically you need a new cluster. Cannot modify existing cluster for Vertical Scaling. Ref: https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/Scaling.html#Scaling.Memcached.Vertically
upvoted 10 times
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albert_kuo
Most Recent 9 months, 1 week ago
Selected Answer: D
The observed symptoms of consistently high CPU utilization above 95% and very low FreeableMemory (under 1 MB) indicate that the current Memcached cluster's resources are insufficient to handle the application's workload. To improve performance and reduce latency, it's necessary to select a node type with higher CPU and memory capabilities.
upvoted 1 times
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szl0144
2 years, 4 months ago
I VOTE d
upvoted 1 times
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abhishek_m_86
2 years, 6 months ago
D. Replace the Memcached cluster and select a node type that has a higher CPU and memory. Seem correct
upvoted 2 times
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jackdryan
2 years, 6 months ago
I'll go with D
upvoted 2 times
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ImranR
2 years, 6 months ago
D is correct...
upvoted 1 times
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