Questions 52 to 54
Explanations for questions 52 to 54
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Question 52
A customer has a production application running on Amazon EC2. The application frequently overwrites and deletes data. It is essential that the application receives the most up-to-date version of the data whenever it is requested.
Which service is most appropriate for these requirements?
- Amazon RedShift
- Amazon S3
- AWS Storage Gateway
- Amazon RDS
Correct Answer: 4
Explanation: For this scenario, when retrieving data, the chosen storage solution should always return the most up-to-date data. Therefore, we must use Amazon RDS because it provides read-after-write consistency.
INCORRECT: “Amazon RedShift” is incorrect. Amazon RedShift is a data warehouse and is not used as a transactional database, so this is the wrong use case for it.
INCORRECT: “Amazon S3” is incorrect. Amazon S3 only provides eventual consistency for overwrites and deletes.
INCORRECT: “AWS Storage Gateway” is incorrect. AWS Storage Gateway is used for enabling hybrid cloud access to AWS storage services from on-premises.
CORRECT: “Amazon RDS” is the correct answer.
References:
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