DVA-C02 Question 130

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose A2

  BatchGetItem allows fetching multiple items from one or more DynamoDB tables in a single call, which reduces network traffic. C) Eliminated - While each operation is efficient within its table, two separate BatchGetItem calls still result in more round trips to DynamoDB than a single batch operation for both tables D) Eliminated - Scan operations are very inefficient because they read every item in the table, even if only a subset of data is needed.

• Chose A1

  A is the correct answer.

• Chose C1

  I would go for it because typically we are taking the advantage of key selection