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AZ-204 Practice Question: Container Apps scale-to-zero for containerized…
This AZ-204 practice question tests your understanding of container apps scale-to-zero for containerized…. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: azure Container Apps. 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.
The internal API team is deploying a containerized .NET API that receives sporadic requests — sometimes none for hours, then bursts of activity. Cost is a priority. The team wants the container to stop running when idle and start automatically when a request arrives, with no server management overhead. Which Azure service is the best fit?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Azure Kubernetes Service with the cluster autoscaler set to a minimum node count of zero
AKS can scale node pools to zero, but scaling a node from zero requires provisioning a new VM (1-3 minutes cold start). AKS also requires cluster management, control plane costs, and node pool configuration — not the 'no server management' profile the team wants.
B
Distractor review
Azure App Service on a B1 (Basic) plan with Always On disabled
App Service Basic plans do not support scale-to-zero. Always On being disabled means the app shuts down after 20 minutes of idle, but the App Service plan continues running and incurring compute charges. Only Consumption (serverless) plans support true scale-to-zero, and only for Azure Functions, not containerized apps.
C
Distractor review
Azure Virtual Machine Scale Sets with scheduled scaling to zero instances overnight
Scheduled scaling sets instance count on a time schedule — it cannot respond dynamically to sporadic, unpredictable request arrival. If a burst arrives during a scheduled zero-instance window, all requests would fail until the schedule brings instances back up.
D
Best answer
Azure Container Apps with scale-to-zero enabled on the HTTP ingress
Container Apps scales to zero replicas when idle. The first request after an idle period incurs a cold-start delay (typically seconds) while a replica starts. Subsequent requests in the burst are served by the running replica. Billing is consumption-based — zero replicas means zero compute cost during idle periods.
Common exam trap
Common exam trap: answer the scenario, not the keyword
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.
Technical deep dive
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
- Azure Container Apps
- scale to zero
- containerized workload
- consumption-based billing
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
Azure Container Apps
Related practice questions
Related AZ-204 practice-question pages
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
An application stores customer invoices in Azure Blob Storage. Deleted blobs must be recoverable for 14 days. What should be enabled?
Question 2
You are deploying a containerized application to Azure Container Instances. The application requires a custom domain name and SSL/TLS termination. You need to configure these features. Which resource should you create alongside the container group?
Question 3
A developer needs to run a Kusto query against application request data to identify 95th percentile latency by operation. Where should the query be run? The architecture review board prefers a managed AWS-native control.
Question 4
You are developing a web app that authenticates users via Microsoft Entra ID. The app needs to read the user's profile and send emails on their behalf. You want to minimize user consent prompts. Which OAuth 2.0 grant type should you use?
Question 5
You are developing an Azure Function that processes messages from an Azure Service Bus queue. The function uses a Service Bus queue trigger and runs on a Consumption Plan. The queue receives a high volume of messages in bursts. You need to ensure that the function scales out to handle the load but does not exceed 10 concurrent instances. Which configuration should you apply?
Question 6
You are monitoring an Azure App Service using Application Insights. You notice that the server response time is high for certain requests. You need to drill down to see which external dependencies (like databases or APIs) are causing the delay. Which Application Insights feature should you use?
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FAQ
Questions learners often ask
What does this AZ-204 question test?
Azure Container Apps
What is the correct answer to this question?
The correct answer is: Azure Container Apps with scale-to-zero enabled on the HTTP ingress — Azure Container Apps supports scale-to-zero for HTTP-triggered containerized workloads. When no requests arrive, the container replica count scales to zero and no compute is consumed. When a request arrives, Container Apps starts a replica and routes the request. The KEDA-based scaling engine handles this transparently. The service is fully managed — no cluster or node administration. Azure Functions also scales to zero on the Consumption plan, but the requirement specifies a containerized API, making Container Apps the natural fit.
What should I do if I get this AZ-204 question wrong?
Review azure Container Apps, then practise related AZ-204 questions on the same topic to reinforce the concept.
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