Which of the below features of Pub/Sub allows offline examination and debugging of messages to ensure no-delay processing of other messages?

Answer options:

A.Exactly once processing
B.Seek and replay
C.Dead Letter topics
D.Filtering

Correct Answer: C
Option A is Incorrect. Exactly once processing ensures that the Pub/Sub stream is processed exactly once.
Option B is Incorrect. The seek and replay feature of Pub/Sub can reprocess messages by facilitating point-in-time rewind of backlog.
Option C is Correct. It allows offline examination and debugging of messages to ensure no-delay processing of other messages.
Option D is Incorrect. Filtering enables message filtering based on message attributes.
https://cloud.google.com/pubsub