AZ-400 Practice Question: Design and implement build and release pipelines
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.
Which THREE of the following are valid steps to implement a trunk-based development workflow in Azure Repos? (Select THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Run CI builds on the main branch.
Options A, C, and E are correct. Short-lived feature branches (A) are key; CI builds on main (C) ensure quality; pair programming (E) reduces need for long-lived branches. Option B is wrong because frequent merges are encouraged, not weekly. Option D is wrong because release branches are not part of trunk-based development; everything is done on main.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Run CI builds on the main branch.
Why this is correct
CI ensures main is always stable.
Related concept
Access ports place end devices into a single VLAN.
✓
Use feature flags and pair programming.
Why this is correct
Feature flags allow incomplete features in main; pair programming reduces bugs.
Related concept
Access ports place end devices into a single VLAN.
✗
Merge to main only once per week.
Why it's wrong here
Trunk-based development encourages frequent merges.
✓
Use short-lived feature branches that are merged within a day.
Why this is correct
Short-lived branches minimize divergence.
Related concept
Access ports place end devices into a single VLAN.
✗
Create release branches for each production release.
Why it's wrong here
Release branches conflict with trunk-based approach.
Common exam traps
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
Access ports place end devices into a single VLAN.
Trunk ports carry multiple VLANs between switches.
Allowed VLAN lists decide which VLANs can cross a trunk.
Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
→Use show vlan brief to verify access VLANs.
→Use show interfaces trunk to verify trunk state and allowed VLANs.
→Do not treat every same-VLAN issue as a routing problem.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
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. A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches. 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 VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related AZ-400 questions on switching, trunking, and access-port configuration.
Design and implement build and release pipelines — This question tests Design and implement build and release pipelines — Access ports place end devices into a single VLAN..
What is the correct answer to this question?
The correct answer is: Run CI builds on the main branch. — Options A, C, and E are correct. Short-lived feature branches (A) are key; CI builds on main (C) ensure quality; pair programming (E) reduces need for long-lived branches. Option B is wrong because frequent merges are encouraged, not weekly. Option D is wrong because release branches are not part of trunk-based development; everything is done on main.
What should I do if I get this AZ-400 question wrong?
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related AZ-400 questions on switching, trunking, and access-port configuration.
What is the key concept behind this question?
Access ports place end devices into a single VLAN.
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