AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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.
You host a web application on Azure App Service using multiple deployment slots (production and staging). After swapping staging into production, users report errors. You need to ensure that the staging slot is warmed up before swapping and that any errors during swap cause an automatic rollback. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable auto swap and configure a custom warm-up path.
Option B is correct because enabling auto swap with a custom warm-up path ensures the staging slot is fully warmed up before the swap occurs, and if the warm-up fails or the application returns errors during the swap, Azure App Service automatically rolls back to the previous slot. This directly addresses the requirement for both pre-swap warm-up and automatic rollback on errors.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Configure deployment slot settings to be sticky.
Why it's wrong here
Sticky settings are for configuration, not for warm-up or rollback.
✓
Enable auto swap and configure a custom warm-up path.
Why this is correct
Auto swap with a custom warm-up path ensures the slot is warmed up; Azure automatically rolls back if the warm-up fails.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use swap with preview and complete the swap after verification.
Why it's wrong here
Swap with preview requires manual completion; no automatic rollback.
✗
Configure manual swap and run a warm-up script before swapping.
Why it's wrong here
Manual swap requires manual intervention and no automatic rollback.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'swap with preview' (which requires manual completion) with automatic rollback, or think that sticky settings alone can handle warm-up and error recovery, when in fact auto swap with a custom warm-up path is the only built-in mechanism that combines both warm-up and automatic rollback.
Detailed technical explanation
How to think about this question
Under the hood, Azure App Service auto swap uses the application's warm-up path (default is '/') to send HTTP GET requests until a successful response (HTTP 200-299) is received. If the warm-up fails or the swap operation encounters errors, the platform automatically reverts the swap, ensuring zero-downtime deployment. The custom warm-up path can point to a specific endpoint (e.g., '/healthcheck') that performs comprehensive validation, and you can also configure warm-up triggers like 'applicationInitialization' in web.config for ASP.NET apps.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable auto swap and configure a custom warm-up path. — Option B is correct because enabling auto swap with a custom warm-up path ensures the staging slot is fully warmed up before the swap occurs, and if the warm-up fails or the application returns errors during the swap, Azure App Service automatically rolls back to the previous slot. This directly addresses the requirement for both pre-swap warm-up and automatic rollback on errors.
What should I do if I get this AZ-204 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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