This AZ-400 practice question tests your understanding of develop a security and compliance plan. 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.
Your team uses Azure Pipelines to deploy a web app to Azure App Service. You need to ensure that secrets (e.g., connection strings) are not exposed in the pipeline logs. What is the recommended approach?
Remove all logging from the pipeline.
Why wrong: Logging is needed for debugging.
Use secret pipeline variables and reference them in the pipeline.
Secret variables are masked in logs.
Store secrets in Azure Key Vault and retrieve them in the pipeline, then log them for debugging.
Why wrong: Logging secrets defeats the purpose.
Store secrets as environment variables in the pipeline.
Why wrong: Environment variables can be printed in logs.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Use secret pipeline variables and reference them in the pipeline.
Option B is correct because Azure Pipelines allows you to mark variables as 'secret' to mask them in logs. Option A is incorrect because environment variables can still be logged. Option C is incorrect because Key Vault is for storing secrets, but if logged they can be exposed. Option D is incorrect because removing logging is not practical.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Remove all logging from the pipeline.
Why it's wrong here
Logging is needed for debugging.
Use secret pipeline variables and reference them in the pipeline.
Why this is correct
Secret variables are masked in logs.
Related concept
CIDR notation defines the prefix length.
Store secrets in Azure Key Vault and retrieve them in the pipeline, then log them for debugging.
Why it's wrong here
Logging secrets defeats the purpose.
Store secrets as environment variables in the pipeline.
Why it's wrong here
Environment variables can be printed in logs.
Common exam traps
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related AZ-400 subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Develop a security and compliance plan — This question tests Develop a security and compliance plan — CIDR notation defines the prefix length..
The correct answer is: Use secret pipeline variables and reference them in the pipeline. — Option B is correct because Azure Pipelines allows you to mark variables as 'secret' to mask them in logs. Option A is incorrect because environment variables can still be logged. Option C is incorrect because Key Vault is for storing secrets, but if logged they can be exposed. Option D is incorrect because removing logging is not practical.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related AZ-400 subnetting questions on CIDR, address ranges, and subnet selection.
CIDR notation defines the prefix length.
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Last reviewed: Jun 20, 2026
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