AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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. 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 deploying a containerized application to Azure Container Instances. The application requires writing temporary files to a local filesystem. You need to ensure that the files persist if the container restarts. 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
✓
Mount an Azure Files share as a volume in the container group.
Azure Container Instances (ACI) supports mounting Azure Files shares as volumes. When a container restarts, its writable layer is ephemeral and lost, but an Azure Files share persists independently. By mounting the share, temporary files written to the mount point survive container restarts, meeting the persistence requirement.
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.
✓
Mount an Azure Files share as a volume in the container group.
Why this is correct
Azure Files shares provide persistent, shared storage for containers.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the container's writable layer to store files.
Why it's wrong here
The writable layer is ephemeral and lost on restart.
✗
Use Azure Blob Storage and mount it as a volume.
Why it's wrong here
Azure Blob Storage cannot be mounted as a volume in ACI.
✗
Configure a Docker volume in the container image.
Why it's wrong here
ACI does not support Docker volumes.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Blob Storage (object storage) with Azure Files (SMB file share) and assume both can be mounted as volumes in ACI, but only Azure Files is supported for volume mounts in container groups.
Detailed technical explanation
How to think about this question
Azure Files uses the SMB 3.0 protocol to provide persistent file shares that can be mounted by multiple containers in a container group. Under the hood, ACI maps the Azure Files share to a directory inside the container, and all writes go directly to the share over the network. This is critical for stateful workloads like databases or logging agents that need to survive restarts or be shared across containers.
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 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.
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: Mount an Azure Files share as a volume in the container group. — Azure Container Instances (ACI) supports mounting Azure Files shares as volumes. When a container restarts, its writable layer is ephemeral and lost, but an Azure Files share persists independently. By mounting the share, temporary files written to the mount point survive container restarts, meeting the persistence requirement.
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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