AZ-400 Develop a security and compliance plan Practice Question
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 GitHub Actions for CI/CD and needs to ensure that secrets such as Azure service principal credentials are not exposed in logs. What is the best practice to prevent secret exposure?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Store secrets as GitHub Actions secrets and reference them in workflows
Option C is correct because GitHub automatically redacts secrets in workflow logs. Option A is wrong because storing secrets in YAML files is insecure. Option B is wrong because environment protection rules are for approvals, not redaction. Option D is wrong because encrypting logs does not prevent exposure in transit.
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
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Store secrets as GitHub Actions secrets and reference them in workflows
Why this is correct
GitHub automatically redacts secrets in logs when referenced correctly.
Clue confirmation
The clue word "best" in the question point toward this answer.
Storing secrets in plaintext in YAML is insecure and not recommended.
✗
Use environment protection rules to mask secrets
Why it's wrong here
Environment protection rules control deployments but do not mask secrets in logs.
✗
Encrypt workflow logs after the run completes
Why it's wrong here
Encryption after the fact does not prevent exposure during the run.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
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
How to think about this question
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.
KKey Concepts to Remember
CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.
TExam Day Tips
→Write the block size before choosing the subnet.
→Check whether the question asks for hosts, subnets or a specific address range.
→Do not confuse /24, /25, /26 and /27 host counts.
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
How this comes up in practice
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-400 question in full detail.
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.
Develop a security and compliance plan — This question tests Develop a security and compliance plan — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Store secrets as GitHub Actions secrets and reference them in workflows — Option C is correct because GitHub automatically redacts secrets in workflow logs. Option A is wrong because storing secrets in YAML files is insecure. Option B is wrong because environment protection rules are for approvals, not redaction. Option D is wrong because encrypting logs does not prevent exposure in transit.
What should I do if I get this AZ-400 question wrong?
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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