Questions 19 to 21
Explanations for questions 19 to 21
We'll cover the following
Question 19
The database layer of an on-premises web application is being migrated to AWS. The database uses a multi-threaded, in-memory caching layer to improve performance for repeated queries. Which service would be the most suitable replacement for the database cache?
- Amazon ElastiCache Redis
- Amazon DynamoDB DAX
- Amazon ElastiCache Memcached
- Amazon RDS MySQL
Correct Answer: 3
Explanation: Amazon ElastiCache with the Memcached engine is an in-memory database that can be used as a database caching layer. The Memcached engine supports multiple cores and threads and large nodes.
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