The correct choice is to add a WebJob to the App Service that uses a scheduled trigger to run the maintenance code. This works because Azure WebJobs allow you to schedule background tasks directly within the same App Service plan, using a `settings.job` file with a CRON expression like `0 0 2 * * 0` to run at 2:00 AM every Sunday. Since the WebJob shares the same plan resources as the web application, it incurs no additional cost, perfectly meeting the requirement to reduce expenses while offloading time-consuming maintenance outside peak hours. On the AZ-204 exam, this scenario tests your understanding of how to run background jobs cost-effectively within App Service, often contrasting WebJobs with Azure Functions running on a separate Consumption plan—a common trap where candidates mistakenly choose a dedicated Functions plan, forgetting that WebJobs are the native, no-cost option for in-plan scheduling. Memory tip: think of a WebJob as a "scheduled helper" that lives in the same house (App Service plan) as your app, so you don’t pay extra rent.
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Your company uses Azure App Service to host a web application that requires periodic database maintenance. The maintenance tasks are time-consuming and must run outside of peak hours. You need to schedule these tasks to run automatically at 2:00 AM every Sunday. The tasks should be implemented as an Azure Function that runs in the same App Service plan to reduce costs. What should you do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add a WebJob to the App Service that uses a scheduled trigger to run the maintenance code.
Option C is correct because WebJobs in Azure App Service allow you to run background tasks on a schedule using a settings.job file with a CRON expression. Since the WebJob runs in the same App Service plan as the web application, it shares the same resources and incurs no additional cost, meeting the requirement to reduce costs. The scheduled trigger at 2:00 AM every Sunday can be configured with the CRON expression '0 0 2 * * 0'.
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.
✗
Deploy the maintenance code as an Azure Function in the Consumption plan and configure a timer trigger.
Why it's wrong here
Consumption plan has separate costs and cold start delays.
✗
Create a separate Azure Function App in the same App Service plan and configure a timer trigger.
Why it's wrong here
Possible but overkill; WebJob is simpler and integrated.
✓
Add a WebJob to the App Service that uses a scheduled trigger to run the maintenance code.
Why this is correct
WebJobs can be scheduled and run within the same App Service plan at no extra cost.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Azure Logic Apps with a recurrence trigger to call the web application's maintenance endpoint.
Why it's wrong here
Logic Apps incur separate costs and may require exposing an endpoint.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Functions with WebJobs, assuming that a timer-triggered Azure Function in the same plan is the correct choice, but they overlook that WebJobs are the native, cost-effective way to run scheduled background tasks within an existing App Service without creating a separate Function App resource.
Detailed technical explanation
How to think about this question
WebJobs in Azure App Service run as background processes within the same sandbox as the web app, sharing the same VM instances and scaling automatically with the App Service plan. The scheduling is handled by the Azure WebJobs SDK, which uses a timer trigger based on NCronTab, supporting CRON expressions with six fields (second, minute, hour, day of month, month, day of week). For example, '0 0 2 * * 0' triggers at 2:00 AM every Sunday. This approach is ideal for long-running, time-consuming tasks because WebJobs can run continuously or on demand without blocking the main web application's request handling.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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: Add a WebJob to the App Service that uses a scheduled trigger to run the maintenance code. — Option C is correct because WebJobs in Azure App Service allow you to run background tasks on a schedule using a settings.job file with a CRON expression. Since the WebJob runs in the same App Service plan as the web application, it shares the same resources and incurs no additional cost, meeting the requirement to reduce costs. The scheduled trigger at 2:00 AM every Sunday can be configured with the CRON expression '0 0 2 * * 0'.
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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