You wrote this code to subscribe an SMS endpoint but get an error:

medium📝 Debug Q6 of 15

AWS - SNS and SQS

sns_client.subscribe(TopicArn='arn:aws:sns:us-east-1:123456789012:MyTopic', Protocol='sms', Endpoint='1234567890')

What is the likely cause?

AThe Endpoint parameter should be an email.

BThe phone number is missing country code format.

CThe TopicArn is invalid.

DThe protocol 'sms' is not supported.

Step-by-Step Solution

Solution:

Step 1: Check SMS Endpoint Format Requirements
SMS endpoints require phone numbers in E.164 format, including country code (e.g., +1234567890).
Step 2: Identify Cause of Error
Number '1234567890' lacks country code, causing subscription failure.
Final Answer:
The phone number is missing country code format. -> Option B
Quick Check:
SMS endpoint needs country code [OK]

Quick Trick: Use E.164 format with country code for SMS endpoints [OK]

Common Mistakes:

Master "SNS and SQS" in AWS

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More AWS Quizzes