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.
An NSG on a subnet has these inbound rules: Deny-All-Inbound at priority 100 and Allow-RDP-from-AdminSubnet at priority 200. Administrators on AdminSubnet still cannot RDP to a VM in the subnet. What should the network administrator change?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Move the allow rule to a lower priority number than 100.
The NSG rules are evaluated in priority order, with lower numbers having higher precedence. The Deny-All-Inbound rule at priority 100 blocks all traffic, including RDP from AdminSubnet, before the Allow-RDP-from-AdminSubnet rule at priority 200 is evaluated. To allow RDP traffic, the allow rule must have a lower priority number (e.g., 90) than the deny rule (100), ensuring it is evaluated first and permits 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 rule so only the allow rule remains.
Why it's wrong here
Removing the deny rule is unnecessary if a higher-priority allow rule can be placed ahead of it.
✓
Move the allow rule to a lower priority number than 100.
Why this is correct
NSG rules are processed in priority order, and the lowest number wins. The allow rule must be evaluated before the deny rule.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the VM to a different availability zone.
Why it's wrong here
Availability zones do not affect NSG rule evaluation or inbound port access.
✗
Create a private endpoint for the VM.
Why it's wrong here
Private endpoints are for supported PaaS services, not for opening RDP to a virtual machine.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume allow rules override deny rules regardless of priority, but Azure NSGs use priority-based evaluation where the first matching rule (lowest priority number) wins, so a higher-priority deny rule will block traffic even if a lower-priority allow rule exists.
Detailed technical explanation
How to think about this question
Azure NSGs process rules in ascending order of priority (1–4096), and once a rule matches, evaluation stops (no further rules are checked). This means a higher-priority deny rule (lower number) will block traffic before a lower-priority allow rule (higher number) can permit it. In real-world scenarios, this often causes issues when administrators add a broad deny rule without considering existing allow rules, requiring reordering of priorities to maintain intended access.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-104 question in full detail.
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: Move the allow rule to a lower priority number than 100. — The NSG rules are evaluated in priority order, with lower numbers having higher precedence. The Deny-All-Inbound rule at priority 100 blocks all traffic, including RDP from AdminSubnet, before the Allow-RDP-from-AdminSubnet rule at priority 200 is evaluated. To allow RDP traffic, the allow rule must have a lower priority number (e.g., 90) than the deny rule (100), ensuring it is evaluated first and permits 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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