A Web-Based Application Is Running in AWS

question 476

Multiple Choice

A web-based application is running in AWS. The application is using a MySQL Amazon RDS database instance for persistence. The application stores transactional data and is read-heavy. The RDS instance gets busy during the peak usage, which shows the overall application response times. The SysOps Administrator is asked to improve the read queries performance using a scalable solution. Which options will meet these requirements? (Choose two.)

• A) Scale up the RDS instance to a larger instance size
• B) Enable the RDS database Multi-AZ option
• C) Create a read replica of the RDS instance
• D) Use Amazon DynamoDB instead of RDS
• E) Use Amazon ElastiCache to cache read queries

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Definitions:

Peg-Word

A mnemonic technique that involves associating items in a list with a prearranged set of "peg" words to aid in recall.

Musical Rhyming

The creation of music through the use of rhymes, often found in lyrics, enhancing memorability and aesthetic appeal.

Fan Effect

is a phenomenon observed in cognitive psychology where the time taken to retrieve information from memory increases as the amount of related information increases.

Retrieval

The processes by which stored information is brought back to conscious awareness.