This AZ-400 practice question tests your understanding of design and implement build and release pipelines. 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 build pipeline runs on a self-hosted agent pool. You need to ensure that only authorized pipelines can use these agents. Which security measure should you implement?
Set permissions on the agent pool
Restricts which pipelines can use the pool.
Use agent tokens
Why wrong: Agent tokens authenticate agents, not pipelines.
Use variable groups
Why wrong: Variable groups store variables, not control agent access.
Configure agent queues
Why wrong: Agent queues are deprecated and do not restrict pipeline access.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Set permissions on the agent pool
Option C is correct because agent pools can have permissions set to restrict which pipelines can use them. Option A is wrong because agent queues are deprecated and don't provide granular pipeline permissions. Option B is wrong because agent tokens are for agent registration, not pipeline authorization. Option D is wrong because variable groups are for variables, not agent access.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Set permissions on the agent pool
Why this is correct
Restricts which pipelines can use the pool.
Related concept
Authentication checks who the user is.
Use agent tokens
Why it's wrong here
Agent tokens authenticate agents, not pipelines.
Use variable groups
Why it's wrong here
Variable groups store variables, not control agent access.
Configure agent queues
Why it's wrong here
Agent queues are deprecated and do not restrict pipeline access.
Common exam traps
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-400 questions on access control and AAA configuration.
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FAQ
Design and implement build and release pipelines — This question tests Design and implement build and release pipelines — Authentication checks who the user is..
The correct answer is: Set permissions on the agent pool — Option C is correct because agent pools can have permissions set to restrict which pipelines can use them. Option A is wrong because agent queues are deprecated and don't provide granular pipeline permissions. Option B is wrong because agent tokens are for agent registration, not pipeline authorization. Option D is wrong because variable groups are for variables, not agent access.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-400 questions on access control and AAA configuration.
Authentication checks who the user is.
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Last reviewed: Jun 20, 2026
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