Q68 — AWS DVA-C02 Ch.1

Question 68 of 100 | ← Chapter 1

A company uses Amazon RDS as the backend database for its application. A recent marketing campaign caused a surge in read requests, increasing latency for database queries. The company plans to implement a caching layer in front of the database. The cache must be encrypted and highly available. Which solution meets these requirements?

• A. Amazon CloudFront
• B. Amazon ElastiCache for Memcached
• C. Amazon ElastiCache for Redis (Cluster Mode) ✓
• D. Amazon DynamoDB Accelerator (DAX)

Correct Answer: C. Amazon ElastiCache for Redis (Cluster Mode)

Explanation

Amazon ElastiCache for Redis in Cluster Mode provides high availability and supports encryption in-transit and at-rest. As an in-memory caching service, it effectively absorbs read traffic and reduces load on the RDS backend. Amazon CloudFront is a CDN—not a database cache. Amazon ElastiCache for Memcached lacks built-in encryption support. DAX is exclusively for DynamoDB and cannot cache RDS data. 【Lantern Certification: swufelp1999】