- A
Delete the Deny-All-Inbound rule because default NSG rules will allow the traffic.
Why wrong: Default rules are not meant to replace a required deny rule, and deleting the custom deny rule is not necessary if priority is corrected.
- B
Change the Allow-App-From-Web rule to a lower priority number than 250.
NSG rules are processed in priority order, and the lowest number wins. Because Deny-All-Inbound at 250 is evaluated before the allow rule at 300, it blocks the traffic first. Moving the allow rule to a lower number than 250 lets the permitted web-to-app traffic match before the deny rule is applied.
- C
Add a route table entry for TCP 8080 traffic to bypass the NSG.
Why wrong: Route tables determine next hop, not firewall decisions. NSGs still evaluate the traffic even when routing is correct.
- D
Move the Allow-Web-From-Internet rule to priority 400.
Why wrong: This would make the web inbound allow rule evaluated later, which does not help app-tier traffic and could make other traffic more restrictive.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. 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.
An application subnet has a network security group with these inbound rules: Allow-Web-From-Internet at priority 200, Allow-App-From-Web at priority 300, and Deny-All-Inbound at priority 250. The web tier must reach the app tier on TCP 8080, but traffic is being denied. The administrator confirms the source and destination IPs are correct. What is the best fix?
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 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-App-From-Web rule to a lower priority number than 250.
The Deny-All-Inbound rule at priority 250 is evaluated before the Allow-App-From-Web rule at priority 300 because lower priority numbers are processed first. To allow web-to-app traffic on TCP 8080, the Allow-App-From-Web rule must have a lower priority number (e.g., 240) than the Deny-All-Inbound rule so it is evaluated and applied first, permitting the traffic before the deny rule blocks it.
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.
- ✗
Delete the Deny-All-Inbound rule because default NSG rules will allow the traffic.
Why it's wrong here
Default rules are not meant to replace a required deny rule, and deleting the custom deny rule is not necessary if priority is corrected.
- ✓
Change the Allow-App-From-Web rule to a lower priority number than 250.
Why this is correct
NSG rules are processed in priority order, and the lowest number wins. Because Deny-All-Inbound at 250 is evaluated before the allow rule at 300, it blocks the traffic first. Moving the allow rule to a lower number than 250 lets the permitted web-to-app traffic match before the deny rule is applied.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Add a route table entry for TCP 8080 traffic to bypass the NSG.
Why it's wrong here
Route tables determine next hop, not firewall decisions. NSGs still evaluate the traffic even when routing is correct.
- ✗
Move the Allow-Web-From-Internet rule to priority 400.
Why it's wrong here
This would make the web inbound allow rule evaluated later, which does not help app-tier traffic and could make other traffic more restrictive.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume all rules are evaluated and the most specific rule wins, but in Azure NSGs, priority order (numerical value) strictly determines evaluation sequence, not specificity or rule type.
Detailed technical explanation
How to think about this question
NSG rules are evaluated in priority order (lowest number first) until a matching rule is found; once a deny rule matches, no further rules are processed. This is analogous to a firewall access control list (ACL) where an explicit deny at a lower priority number will block traffic even if a later allow rule exists. In real-world scenarios, administrators often misplace allow rules at higher priority numbers than a catch-all deny, leading to silent traffic drops that require careful rule reordering.
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.
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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-App-From-Web rule to a lower priority number than 250. — The Deny-All-Inbound rule at priority 250 is evaluated before the Allow-App-From-Web rule at priority 300 because lower priority numbers are processed first. To allow web-to-app traffic on TCP 8080, the Allow-App-From-Web rule must have a lower priority number (e.g., 240) than the Deny-All-Inbound rule so it is evaluated and applied first, permitting the traffic before the deny rule blocks it.
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.
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?
Read the scenario before looking for a memorised answer.
About these practice questions
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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.
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