A Company Has a Web Application That Uses AWS Elastic

question 253

Multiple Choice

A company has a web application that uses AWS Elastic Beanstalk, Amazon S3, and Amazon DynamoDB to develop a web application. The web application has increased dramatically in popularity, resulting in unpredictable spikes in traffic. A DevOps Engineer has noted that 90% of the requests are duplicate read requests to the DynamoDB table and the images stored in an S3 bucket. How can the Engineer improve the performance of the website?

• A) Use Amazon ElastiCache for Redis to cache repeated read requests to DynamoDB and AWS Elemental MediaStore to cache images stored in S3.
• B) Use Amazon ElastiCache for Memcached to cache repeated read requests to DynamoDB and Amazon EFS to cache images stored in S3.
• C) Use DynamoDB Accelerator to cache repeated read requests to DynamoDB and Amazon CloudFront to cache images stored in S3.
• D) Use DynamoDB Streams to cache repeated read requests to DynamoDB and API Gateway to cache images stored in S3.

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Definitions:

Frictional Unemployment

Frictional unemployment occurs when there is a temporary mismatch between workers and jobs, such as when individuals are transitioning between jobs or entering the workforce for the first time.

Structurally Unemployed

Unemployment that occurs due to shifts in the economy that create a mismatch between the skills of the workforce and the needs of the employers.

Frictionally Unemployed

Individuals temporarily out of work while transitioning between jobs, typically a healthy phenomenon in a dynamic economy.

Electrical Engineer

A professional who designs, develops, tests, and supervises the manufacturing of electrical equipment and systems.