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Why is it important to configure the correct access policy on an SQS queue subscribed to an SNS topic in a fan-out pattern?

hard📝 Conceptual Q10 of 15
AWS - SNS and SQS
Why is it important to configure the correct access policy on an SQS queue subscribed to an SNS topic in a fan-out pattern?
ATo enable the queue to publish messages back to SNS.
BTo prevent SNS from deleting messages in the queue.
CTo allow SNS to send messages to the queue securely.
DTo allow the queue to subscribe to multiple SNS topics.
Step-by-Step Solution
Solution:

  1. Step 1: Understand access policy role

    Access policy grants SNS permission to send messages to the SQS queue.

  2. Step 2: Confirm security purpose

    Proper policy ensures secure and authorized message delivery.

  3. Final Answer:

    To allow SNS to send messages to the queue securely. -> Option C

  4. Quick Check:

    Access policy enables SNS message delivery [OK]
Quick Trick: Access policy must allow SNS to send messages [OK]
Common Mistakes:
  • Thinking policy controls message deletion
  • Assuming queue publishes messages to SNS
  • Believing policy controls multiple subscriptions

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