The answer is to configure your Azure Container Instances with a restart policy of 'OnFailure' or 'Never' to minimize costs. This is correct because ACI bills per second of active container runtime, and a restart policy like 'Always' would cause the container to spin up again after the batch job completes, incurring unnecessary compute charges for idle or repeated execution. On the AZ-204 exam, this scenario tests your understanding of how restart policies directly impact cost optimization for finite workloads like batch processing, often appearing as a trap where candidates overlook the billing implications of automatic restarts. A common memory tip is to associate "finite jobs" with "finite policies"—if the job has a clear end, choose OnFailure or Never to stop the meter.
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.
You are designing a solution that uses Azure Container Instances (ACI) to run a batch processing job. The job is expected to run for up to 2 hours. You need to minimize costs. Which ACI configuration should you use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a container group with a restart policy of 'OnFailure' or 'Never'.
Option A is correct because setting the restart policy to 'OnFailure' or 'Never' ensures that the container does not restart after the batch job completes, avoiding unnecessary compute charges. ACI bills per second of container runtime, so any idle or restarted container time directly increases cost. For a finite batch job, a restart policy that prevents automatic restarts is the most cost-effective choice.
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.
✓
Use a container group with a restart policy of 'OnFailure' or 'Never'.
Why this is correct
The container stops after the job completes, reducing cost.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use GPU-enabled containers for faster processing.
Why it's wrong here
GPUs are more expensive and not needed for typical batch jobs.
✗
Deploy the container group in a virtual network.
Why it's wrong here
Virtual network is not required for the job and adds cost.
✗
Use a container group with a restart policy of 'Always'.
Why it's wrong here
Always restart keeps the container running, increasing cost.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume 'Always' is safer for reliability, but for batch jobs that complete successfully, 'Always' causes continuous restarts and unbounded costs, while 'OnFailure' or 'Never' align with the cost-minimization goal.
Detailed technical explanation
How to think about this question
ACI restart policies are enforced by the Azure container orchestrator: 'Always' restarts the container regardless of exit code, 'OnFailure' restarts only on non-zero exit codes, and 'Never' does not restart. For batch jobs, the job process typically exits with code 0 on success, so 'OnFailure' avoids restarting on success while 'Never' avoids any restart. ACI billing is metered per second of container runtime, including time spent in the 'Running' state, so preventing restarts eliminates charges for post-completion execution.
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: Use a container group with a restart policy of 'OnFailure' or 'Never'. — Option A is correct because setting the restart policy to 'OnFailure' or 'Never' ensures that the container does not restart after the batch job completes, avoiding unnecessary compute charges. ACI bills per second of container runtime, so any idle or restarted container time directly increases cost. For a finite batch job, a restart policy that prevents automatic restarts is the most cost-effective choice.
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.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. You deploy a container to Azure Container Instances (ACI). The container runs a background job that should automatically restart only if it exits with a non-zero exit code (i.e., crashes). You want to minimize costs. Which restart policy should you configure?
medium
A.Set restart policy to Always and use a private container registry
✓ B.Set restart policy to OnFailure and use a single container group
C.Set restart policy to Never and use a public container registry
D.Set restart policy to OnFailure and deploy in a virtual network
Why B: The OnFailure restart policy restarts the container only when it exits with a non-zero exit code, which matches the requirement to restart only on crashes. This policy minimizes costs because the container does not run continuously when it exits successfully, unlike the Always policy. Using a single container group is the simplest and most cost-effective deployment for a single background job.
Last reviewed: Jun 24, 2026
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