Bird
0
0

What will happen if you try to subscribe the same email endpoint twice to the same SNS topic?

medium📝 service behavior Q5 of 15
AWS - SNS and SQS
What will happen if you try to subscribe the same email endpoint twice to the same SNS topic?
ASNS rejects the second subscription with an error.
BSNS creates two separate subscriptions for the same email.
CSNS ignores the second subscription request silently.
DSNS updates the existing subscription with new settings.
Step-by-Step Solution
Solution:

  1. Step 1: Understand SNS Subscription Behavior for Duplicate Endpoints

    SNS allows multiple subscriptions with the same endpoint; each is treated as a separate subscription.

  2. Step 2: Identify Outcome of Duplicate Email Subscription

    Both subscriptions exist independently and receive messages separately.

  3. Final Answer:

    SNS creates two separate subscriptions for the same email. -> Option B

  4. Quick Check:

    Duplicate email subscriptions = multiple subscriptions allowed [OK]
Quick Trick: SNS allows multiple subscriptions per endpoint [OK]
Common Mistakes:
  • Assuming SNS rejects duplicates
  • Thinking SNS merges subscriptions
  • Believing SNS silently ignores duplicates

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More AWS Quizzes
API Gateway - Request and response mapping - Quiz 5medium Auto Scaling - Auto Scaling groups - Quiz 6medium Auto Scaling - Scheduled scaling - Quiz 4medium Auto Scaling - Predictive scaling overview - Quiz 4medium Auto Scaling - Scheduled scaling - Quiz 2easy DynamoDB - DynamoDB Streams overview - Quiz 8hard DynamoDB - Creating a DynamoDB table - Quiz 2easy RDS and Relational Databases - RDS pricing considerations - Quiz 8hard RDS and Relational Databases - Multi-AZ deployment for high availability - Quiz 12easy SNS and SQS - Dead letter queues - Quiz 9hard