- A
Change the allow rule to a lower priority number than 200.
NSG rules are processed in priority order, where the lowest number wins. The allow rule must be evaluated before the deny-all rule to permit the traffic.
- B
Change the allow rule protocol from TCP to Any.
Why wrong: The failure is caused by rule priority, not protocol selection. Changing the protocol alone will not override an earlier deny rule.
- C
Move the VM to a different subnet so the rule can apply.
Why wrong: Subnet placement does not change NSG evaluation. The same priority behavior applies in any subnet where the NSG is attached.
- D
Add a route table entry for TCP 8443 to bypass the NSG.
Why wrong: Route tables control next-hop selection, not packet filtering. They cannot override an NSG deny decision.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A backend VM must accept TCP 8443 only from the web tier. The subnet NSG already has a deny-all inbound rule at priority 200. The administrator adds an allow rule for the web tier at priority 300, but the connection still fails. What should be changed?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Change the allow rule to a lower priority number than 200.
Azure Network Security Groups (NSGs) process rules in priority order, with lower numbers evaluated first. The existing deny-all inbound rule at priority 200 is evaluated before the new allow rule at priority 300, so the deny rule blocks the traffic before the allow rule can be considered. To permit TCP 8443 from the web tier, the allow rule must have a priority number lower than 200 (e.g., 100) so it is evaluated first and allows the traffic.
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.
- ✓
Change the allow rule to a lower priority number than 200.
Why this is correct
NSG rules are processed in priority order, where the lowest number wins. The allow rule must be evaluated before the deny-all rule to permit the traffic.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Change the allow rule protocol from TCP to Any.
Why it's wrong here
The failure is caused by rule priority, not protocol selection. Changing the protocol alone will not override an earlier deny rule.
- ✗
Move the VM to a different subnet so the rule can apply.
Why it's wrong here
Subnet placement does not change NSG evaluation. The same priority behavior applies in any subnet where the NSG is attached.
- ✗
Add a route table entry for TCP 8443 to bypass the NSG.
Why it's wrong here
Route tables control next-hop selection, not packet filtering. They cannot override an NSG deny decision.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume higher priority numbers (like 300) override lower numbers (like 200), but in Azure NSGs, lower priority numbers are evaluated first, so a deny rule with a lower number will block traffic before a higher-numbered allow rule is ever checked.
Detailed technical explanation
How to think about this question
Azure NSGs evaluate rules in ascending priority order (1–4096) and stop at the first match; a deny-all rule at priority 200 will match all inbound traffic before a higher-numbered allow rule is reached. This behavior is similar to access control lists (ACLs) in networking, where the first matching rule is applied. In real-world scenarios, always place explicit allow rules with lower priority numbers than any catch-all deny rules to ensure desired traffic is permitted.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Implement and Manage Virtual Networking — study guide chapter
Learn the concepts, then practise the questions
- →
Implement and Manage Virtual Networking practice questions
Targeted practice on this topic area only
- →
All AZ-104 questions
1,170 questions across all exam domains
- →
AZ-104 study guide
Full concept coverage aligned to exam objectives
- →
AZ-104 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related AZ-104 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Manage Azure Identities and Governance practice questions
Practise AZ-104 questions linked to Manage Azure Identities and Governance.
Implement and Manage Storage practice questions
Practise AZ-104 questions linked to Implement and Manage Storage.
Deploy and Manage Azure Compute practice questions
Practise AZ-104 questions linked to Deploy and Manage Azure Compute.
Implement and Manage Virtual Networking practice questions
Practise AZ-104 questions linked to Implement and Manage Virtual Networking.
Monitor and Maintain Azure Resources practice questions
Practise AZ-104 questions linked to Monitor and Maintain Azure Resources.
AZ-104 Azure RBAC practice questions
Practise AZ-104 questions linked to AZ-104 Azure RBAC.
AZ-104 storage account practice questions
Practise AZ-104 questions linked to AZ-104 storage account.
AZ-104 virtual network practice questions
Practise AZ-104 questions linked to AZ-104 virtual network.
AZ-104 NSG practice questions
Practise AZ-104 questions linked to AZ-104 NSG.
AZ-104 Azure Monitor practice questions
Practise AZ-104 questions linked to AZ-104 Azure Monitor.
AZ-104 backup practice questions
Practise AZ-104 questions linked to AZ-104 backup.
AZ-104 managed identity practice questions
Practise AZ-104 questions linked to AZ-104 managed identity.
Practice this exam
Start a free AZ-104 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Change the allow rule to a lower priority number than 200. — Azure Network Security Groups (NSGs) process rules in priority order, with lower numbers evaluated first. The existing deny-all inbound rule at priority 200 is evaluated before the new allow rule at priority 300, so the deny rule blocks the traffic before the allow rule can be considered. To permit TCP 8443 from the web tier, the allow rule must have a priority number lower than 200 (e.g., 100) so it is evaluated first and allows the traffic.
What should I do if I get this AZ-104 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 11, 2026
This AZ-104 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-104 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.