Question 416 of 997
Monitor, troubleshoot, and optimize Azure solutionsmediumMultiple ChoiceObjective-mapped

Azure Functions Timeout on Consumption Plan – Migrate to Premium

This AZ-204 practice question tests your understanding of monitor, troubleshoot, and optimize azure solutions. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: consumption plan timeout. 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 Azure Functions app (running on the Consumption plan) processes messages from an Azure Storage queue. Occasionally, the function fails due to a timeout after 5 minutes. You need to increase the maximum execution time without changing the plan. What should you do?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

Set the functionTimeout property in host.json to 10 minutes

On the Consumption plan, the `functionTimeout` property in host.json can be set up to 10 minutes (default is 5 minutes). Since the function fails after 5 minutes, increasing `functionTimeout` to 10 minutes resolves the timeout without changing the plan. Option B is incorrect because migrating to Premium or Dedicated plan changes the plan, violating the constraint. Option C is incorrect because Durable Functions do not extend the per-function execution timeout; the individual function still has the same limit. Option D is incorrect because the visibility timeout affects when a message reappears, not the function's execution timeout.

Key principle: Consumption plan timeout

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Set the functionTimeout property in host.json to 10 minutes

    Why this is correct

    Correct. The functionTimeout in host.json can be increased to 10 minutes on the Consumption plan, extending the execution time without changing the plan.

    Related concept

    Consumption plan timeout

  • Migrate the function app to the Premium or Dedicated plan

    Why it's wrong here

    Incorrect. Migrating to Premium or Dedicated plan changes the plan, which the requirement explicitly says not to do. While it would allow longer timeouts, it is not allowed under the constraint.

  • Use Durable Functions to split the work

    Why it's wrong here

    Incorrect. Durable Functions do not change the per-function execution timeout. The individual function still has the same 5-minute limit (unless increased via host.json).

  • Increase the visibility timeout of the queue message

    Why it's wrong here

    Incorrect. Increasing the visibility timeout of the queue message only controls when the message becomes visible again after a failed attempt, not the function's execution timeout.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Candidates might think that the Consumption plan has a fixed 5-minute timeout, but it can be increased to 10 minutes via the functionTimeout setting in host.json. However, if more than 10 minutes is needed, upgrading the plan is necessary.

Detailed technical explanation

How to think about this question

Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.

KKey Concepts to Remember

  • Consumption plan timeout
  • functionTimeout property
  • Premium plan timeout
  • Durable Functions

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

Consumption plan timeout

Real-world example

How this comes up in practice

A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

Visual reference

Client Recursive Resolver Root DNS (13 root servers) TLD DNS (.com, .org, …) Authoritative example.com query IP addr answer

Quick reference

Cloud Service Model Comparison

ModelYou ManageProvider ManagesExamples
IaaSOS, runtime, apps, dataHardware, hypervisor, networkingEC2, Azure VMs, GCP Compute Engine
PaaSApps and dataOS, runtime, middleware, hardwareElastic Beanstalk, Azure App Service
SaaSData and settings onlyEverything elseMicrosoft 365, Salesforce, Workday
FaaS / ServerlessFunction code onlyInfra, scaling, runtimeLambda, Azure Functions, Cloud Run
CaaSContainers and appsKubernetes, OS, hardwareEKS, AKS, GKE

What to study next

Got this wrong? Here's your next step.

Review consumption plan timeout, then practise related AZ-204 questions on the same topic to reinforce the concept.

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FAQ

Questions learners often ask

What does this AZ-204 question test?

Monitor, troubleshoot, and optimize Azure solutions — This question tests Monitor, troubleshoot, and optimize Azure solutions — Consumption plan timeout.

What is the correct answer to this question?

The correct answer is: Set the functionTimeout property in host.json to 10 minutes — On the Consumption plan, the `functionTimeout` property in host.json can be set up to 10 minutes (default is 5 minutes). Since the function fails after 5 minutes, increasing `functionTimeout` to 10 minutes resolves the timeout without changing the plan. Option B is incorrect because migrating to Premium or Dedicated plan changes the plan, violating the constraint. Option C is incorrect because Durable Functions do not extend the per-function execution timeout; the individual function still has the same limit. Option D is incorrect because the visibility timeout affects when a message reappears, not the function's execution timeout.

What should I do if I get this AZ-204 question wrong?

Review consumption plan timeout, then practise related AZ-204 questions on the same topic to reinforce the concept.

What is the key concept behind this question?

Consumption plan timeout

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Last reviewed: Jun 20, 2026

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