Given an SNS topic with two subscribed SQS queues, if a message is published to SNS, what will be the total number of messages received by the queues?

medium📝 Predict Output Q4 of 15

AWS - SNS and SQS

ATwo messages, one in each queue

BOne message split between the two queues

CZero messages until queues poll SNS

DOne message duplicated in the first queue only

Step-by-Step Solution

Solution:

Step 1: Understand SNS fan-out delivery
Each subscribed queue receives a full copy of the message.
Step 2: Calculate total messages
Two queues mean two messages total, one per queue.
Final Answer:
Two messages, one in each queue. -> Option A
Quick Check:
Fan-out = message per queue [OK]

Quick Trick: Each queue gets its own copy of the message [OK]

Common Mistakes:

MISTAKES

Thinking message is split or shared
Assuming queues must poll SNS to get messages
Believing only first queue gets message

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More AWS Quizzes

Given an SNS topic with two subscribed SQS queues, if a message is published to SNS, what will be the total number of messages received by the queues?

Step 1: Understand SNS fan-out delivery

Step 2: Calculate total messages

Final Answer:

Quick Check:

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