Quick Answer
The answer is to enable dead-lettering on the subscription. This configuration ensures that when a subscriber using PeekLock receive mode fails to process a message—whether due to an exception, exceeding the maximum delivery count, or a time-to-live expiration—the message is automatically moved to a dead-letter queue within the Service Bus namespace, preventing permanent loss. On the AZ-204 exam, this scenario tests your understanding of how dead-lettering acts as a safety net for high-throughput messaging, where subscribers may crash or become overwhelmed. A common trap is confusing dead-lettering with auto-forwarding or session state; remember that dead-lettering isolates poison messages for later inspection and replay, while auto-forwarding simply routes messages to another entity. Memory tip: think of dead-lettering as a "quarantine zone" for unprocessable messages—if a message can't be handled, it goes to the dead-letter queue instead of vanishing.
This AZ-204 practice question tests your understanding of connect to and consume azure services and third-party services. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company has an Azure Service Bus namespace with a topic that receives high-throughput messages. They need to ensure that if a subscriber fails, messages are not lost and can be replayed. The subscriber is a client application that uses the PeekLock receive mode. What should they configure?
Enable auto-forwarding on the subscription.
Why wrong: Forwards messages to another queue/topic, not for failure handling.
Set a SQL filter on the subscription.
Why wrong: Filters messages, not for fault tolerance.
Disable dead-lettering on the subscription.
Why wrong: Would lose messages that exceed max delivery count.
Enable dead-lettering on the subscription.
Dead-letter queue stores messages that fail processing, allowing replay.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Enable dead-lettering on the subscription.
A subscription with dead-lettering (option A) ensures messages that cannot be processed are moved to a dead-letter queue. Option B disables dead-lettering. Option C enables auto-forwarding, not dead-letter. Option D sets a filter, not relevant.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Enable auto-forwarding on the subscription.
Why it's wrong here
Forwards messages to another queue/topic, not for failure handling.
Set a SQL filter on the subscription.
Why it's wrong here
Filters messages, not for fault tolerance.
Disable dead-lettering on the subscription.
Why it's wrong here
Would lose messages that exceed max delivery count.
Enable dead-lettering on the subscription.
Why this is correct
Dead-letter queue stores messages that fail processing, allowing replay.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Connect to and consume Azure services and third-party services — This question tests Connect to and consume Azure services and third-party services — Read the scenario before looking for a memorised answer..
The correct answer is: Enable dead-lettering on the subscription. — A subscription with dead-lettering (option A) ensures messages that cannot be processed are moved to a dead-letter queue. Option B disables dead-lettering. Option C enables auto-forwarding, not dead-letter. Option D sets a filter, not relevant.
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 20, 2026
This AZ-204 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-204 exam.
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