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

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

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

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

100% B

B is correct.

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

B is correct.

B Explanation https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/nodes-select-size.html

It doesn't say memcached though

Answer is A