- A
Move the allow-RDP rule to a lower priority number than 200.
NSG rules are processed in priority order, where lower numbers are evaluated first. Because the deny-all rule at priority 200 is hit before the allow rule at 300, the RDP traffic is denied before it can match the allow entry. Moving the allow rule to a number lower than 200, such as 100, ensures the authorized workstation is permitted while the later deny-all rule still blocks everyone else.
- B
Change the allow rule from inbound to outbound traffic.
Why wrong: RDP access to a VM is inbound traffic. Making the rule outbound would not permit remote connections to the server.
- C
Change the protocol from TCP to Any on the deny-all rule.
Why wrong: The problem is rule order, not protocol matching. Broadening the deny rule would not allow the desired RDP session.
- D
Attach a user-defined route so the workstation can reach the VM directly.
Why wrong: Routing controls the path packets take, but it does not override an NSG deny that blocks the port.
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.
A VM in subnet S1 must accept RDP only from the administrator workstation at 203.0.113.25. The subnet NSG has a custom inbound deny-all rule at priority 200 and a custom allow-RDP rule at priority 300 for source 203.0.113.25, destination Any, TCP 3389. RDP is still blocked from the workstation. What should the administrator change?
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
Move the allow-RDP rule to a lower priority number than 200.
Network Security Group (NSG) rules are evaluated in priority order, with lower numbers having higher precedence. The deny-all rule at priority 200 is evaluated before the allow-RDP rule at priority 300, so the deny rule blocks the RDP traffic before the allow rule can be applied. To allow RDP from the workstation, the allow-RDP rule must have a lower priority number (e.g., 100) than the deny-all rule, ensuring it is evaluated first.
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.
- ✓
Move the allow-RDP rule to a lower priority number than 200.
Why this is correct
NSG rules are processed in priority order, where lower numbers are evaluated first. Because the deny-all rule at priority 200 is hit before the allow rule at 300, the RDP traffic is denied before it can match the allow entry. Moving the allow rule to a number lower than 200, such as 100, ensures the authorized workstation is permitted while the later deny-all rule still blocks everyone else.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Change the allow rule from inbound to outbound traffic.
Why it's wrong here
RDP access to a VM is inbound traffic. Making the rule outbound would not permit remote connections to the server.
- ✗
Change the protocol from TCP to Any on the deny-all rule.
Why it's wrong here
The problem is rule order, not protocol matching. Broadening the deny rule would not allow the desired RDP session.
- ✗
Attach a user-defined route so the workstation can reach the VM directly.
Why it's wrong here
Routing controls the path packets take, but it does not override an NSG deny that blocks the port.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume rules are evaluated in the order they appear in the portal (top to bottom) or that a more specific rule (allow-RDP) overrides a general rule (deny-all), but Azure NSGs strictly use numeric priority, not specificity or order of creation.
Detailed technical explanation
How to think about this question
NSG rules are processed in ascending order of priority (lower number = higher priority) until a match is found; once a rule matches, no further rules are evaluated. In this scenario, the deny-all rule at priority 200 matches all inbound traffic (including RDP) and blocks it, so the allow-RDP rule at priority 300 is never reached. This behavior is defined in Azure's NSG documentation and is critical for designing effective security policies, especially when combining broad deny rules with specific allow exceptions.
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.
What to study next
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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: Move the allow-RDP rule to a lower priority number than 200. — Network Security Group (NSG) rules are evaluated in priority order, with lower numbers having higher precedence. The deny-all rule at priority 200 is evaluated before the allow-RDP rule at priority 300, so the deny rule blocks the RDP traffic before the allow rule can be applied. To allow RDP from the workstation, the allow-RDP rule must have a lower priority number (e.g., 100) than the deny-all rule, ensuring it is evaluated first.
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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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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