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Exam AWS Certified Developer Associate topic 1 question 95 discussion

Exam question from Amazon's AWS Certified Developer Associate

Question #: 95
Topic #: 1

[All AWS Certified Developer Associate Questions]

A company is using Amazon RDS as the backend database for its application. After a recent marketing campaign, a surge of read requests to the database increased the latency of data retrieval from the database.
The company has decided to implement a caching layer in front of the database. The cached content must be encrypted and must be highly available.
Which solution will meet these requirements?

A. Amazon CloudFront
B. Amazon ElastiCache for Memcached
C. Amazon ElastiCache for Redis in cluster mode
D. Amazon DynamoDB Accelerator (DAX)

Show Suggested Answer

Suggested Answer: C 🗳️

by colintkn at Sept. 20, 2022, 1:35 p.m.

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Comments

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sumanshu

7 months, 2 weeks ago

Selected Answer: C

In cluster mode, ElastiCache for Redis can replicate data across multiple nodes and availability zones

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rcaliandro

2 years, 1 month ago

Selected Answer: C

So in this case I exclude CloudFront because it is not designed for cache RDS databases and I also exclude DAX because we are working with a relational DB rather than DynamoDB. We need to use Amazon ElastiCache but since the requirements suggest an high available solution and the data must be encrypted, for sure we have to choose Amazon ElastiCache in cluster mode. So, the answer C is the correct one.

upvoted 2 times

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MrTee

2 years, 3 months ago

Selected Answer: C

Amazon ElastiCache for Redis is a caching layer that can be used to improve the performance of data retrieval from a database. It supports encryption at rest and in transit, and can be configured for high availability by using Redis Cluster

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Jay1299

2 years, 5 months ago

It should be A Cloudfront with field level enrcyption. Since elasticahe does not provide encryption

upvoted 1 times

fomenkogregory

2 years, 4 months ago

actually it does provide encryption https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/at-rest-encryption.html

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sichilam

2 years, 6 months ago

C is correct

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haazybanj

2 years, 10 months ago

C is correct

upvoted 2 times

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Spamuel

2 years, 10 months ago

Selected Answer: C

C - Redis with Cluster Mode. Memcached is designed for simplicity. Whereas as Redis with Cluster Mode will provide high availability. https://aws.amazon.com/blogs/database/work-with-cluster-mode-on-amazon-elasticache-for-redis/#:~:text=ElastiCache%20for%20Redis%20with%20Cluster%20Mode%20Enabled%20works%20by%20spreading,spread%20across%20multiple%20Redis%20nodes.

upvoted 2 times

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colintkn

2 years, 10 months ago

C should be the answer

upvoted 2 times

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