A developer set maxDeliveryAttempts to 0 in a subscription with a dead letter topic. What is the expected behavior?

medium📝 Debug Q7 of 15

GCP - Cloud Pub/Sub

AThe subscription will fail to create due to invalid maxDeliveryAttempts.

BMessages will be sent to the dead letter topic immediately after first failure.

CMessages will be retried indefinitely without dead lettering.

DMessages will never be sent to the dead letter topic.

Step-by-Step Solution

Solution:

Step 1: Understand valid maxDeliveryAttempts values
maxDeliveryAttempts must be a positive integer greater than zero.
Step 2: Consequence of invalid value
Setting it to 0 is invalid and causes subscription creation failure.
Final Answer:
The subscription will fail to create due to invalid maxDeliveryAttempts. -> Option A
Quick Check:
maxDeliveryAttempts must be > 0 or subscription fails [OK]

Quick Trick: maxDeliveryAttempts must be positive integer [OK]

Common Mistakes:

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