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.
Based on the exhibit, what should the administrator change so the web tier can reach the database tier on TCP 443 without opening the subnet more broadly?
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 for WebTierASG to a priority lower than 100.
Option A is correct because the administrator must ensure the allow rule for WebTierASG is evaluated before the deny-all rule. In Azure Network Security Groups (NSGs), rules are processed in priority order (lower numbers first). The current deny rule at priority 100 blocks all traffic from VirtualNetwork, including TCP 443 from the web tier. By moving the allow rule to a priority lower than 100 (e.g., 90), it will be evaluated first, permitting TCP 443 traffic from WebTierASG to the database tier, while the deny rule still blocks all other traffic from the virtual network.
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 rule for WebTierASG to a priority lower than 100.
Why this is correct
The allow rule must be evaluated before the broader deny rule so the intended traffic is permitted.
Related concept
Read the scenario before looking for a memorised answer.
✗
Delete the deny rule because default rules already block unwanted traffic.
Why it's wrong here
Deleting the rule would expose more traffic than intended and is not the least-privilege fix.
✗
Change the deny rule source from VirtualNetwork to Internet.
Why it's wrong here
That would stop blocking internal traffic, but it would also weaken the intended restriction model.
✗
Change the default inbound rule to AllowVnetInBound.
Why it's wrong here
Default rules cannot be edited this way, and changing defaults would not solve the priority conflict.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume default rules block unwanted traffic, but Azure NSG default rules are permissive for virtual network traffic, so an explicit deny rule is necessary to restrict access, and priority order must be managed carefully to ensure allow rules are evaluated before deny rules.
Detailed technical explanation
How to think about this question
Azure NSGs use a five-tuple match (source IP, source port, destination IP, destination port, protocol) and process rules in ascending priority order. The 'VirtualNetwork' service tag includes all RFC 1918 private addresses and Azure datacenter IP ranges, so a deny rule at priority 100 blocks all traffic from any virtual network resource, including the web tier. By placing a more specific allow rule (e.g., source: WebTierASG, destination: DatabaseSubnet, port: 443) at a lower priority number (e.g., 90), it is evaluated first, creating a 'permit specific, deny all else' pattern. This is a common pattern for microsegmentation in Azure, where application security groups (ASGs) are used to group VMs logically and NSG rules reference those ASGs to enforce least-privilege 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
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.
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 for WebTierASG to a priority lower than 100. — Option A is correct because the administrator must ensure the allow rule for WebTierASG is evaluated before the deny-all rule. In Azure Network Security Groups (NSGs), rules are processed in priority order (lower numbers first). The current deny rule at priority 100 blocks all traffic from VirtualNetwork, including TCP 443 from the web tier. By moving the allow rule to a priority lower than 100 (e.g., 90), it will be evaluated first, permitting TCP 443 traffic from WebTierASG to the database tier, while the deny rule still blocks all other traffic from the virtual network.
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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