Exam AWS Certified Solutions Architect - Professional topic 1 question 139 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional

Question #: 139
Topic #: 1

[All AWS Certified Solutions Architect - Professional Questions]

In Amazon ElastiCache, the failure of a single cache node can have an impact on the availability of your application and the load on your back-end database while
ElastiCache provisions a replacement for the failed cache node and it get repopulated.
Which of the following is a solution to reduce this potential availability impact?

A. Spread your memory and compute capacity over fewer number of cache nodes, each with smaller capacity.
B. Spread your memory and compute capacity over a larger number of cache nodes, each with smaller capacity.
C. Include fewer number of high capacity nodes.
D. Include a larger number of cache nodes, each with high capacity.

Show Suggested Answer

Suggested Answer: B 🗳️
In Amazon ElastiCache, the number of cache nodes in the cluster is a key factor in the availability of your cluster running Memcached. The failure of a single cache node can have an impact on the availability of your application and the load on your back-end database while ElastiCache provisions a replacement for the failed cache node and it get repopulated.
You can reduce this potential availability impact by spreading your memory and compute capacity over a larger number of cache nodes, each with smaller capacity, rather than using a fewer number of high capacity nodes.
Reference:
http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/CacheNode.Memcached.html

by Mkumar at May 19, 2020, 7:14 p.m.

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Comments

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amministrazione

10 months, 2 weeks ago

B. Spread your memory and compute capacity over a larger number of cache nodes, each with smaller capacity.

upvoted 1 times

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CProgrammer

2 years, 1 month ago

the question is not structured in correct english it makes no sense... the load on your back-end database while .... and it get repopulated.

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hilft

2 years, 11 months ago

B. HA - > wider, smaller to avoid a single point of failure

upvoted 2 times

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TechX

2 years, 11 months ago

Selected Answer: B

100% B

upvoted 1 times

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01037

3 years, 7 months ago

B is correct.

upvoted 1 times

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viet1991

3 years, 8 months ago

B. Spread your memory and compute capacity over a larger number of cache nodes, each with smaller capacity. Explanation: https://pegacert.com/vendor/aws/sop-c01/amazon-elasticache-failure-single-cache-node-impact-bf8f9 In Amazon ElastiCache, the number of cache nodes in the cluster is a key factor in the availability of your cluster running Memcached. The failure of a single cache node can have an impact on the availability of your application and the load on your back-end database while ElastiCache provisions a replacement for the failed cache node and it get repopulated. You can reduce this potential availability impact by spreading your memory and compute capacity over a larger number of cache nodes, each with smaller capacity, rather than using a fewer number of high capacity nodes. http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/CacheNode.Memcached.html

upvoted 1 times

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