AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 subnet has a user-defined route for 0.0.0.0/0 that sends all outbound traffic to a virtual appliance. Traffic to 10.20.4.12 must instead go directly to an Azure VPN gateway. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add a more specific UDR for 10.20.4.0/24 that uses the virtual network gateway next hop.
Option B is correct because User-Defined Routes (UDRs) use the longest prefix match to determine the next hop. The existing 0.0.0.0/0 route sends all outbound traffic to a virtual appliance, but adding a more specific route for 10.20.4.0/24 with a next hop of the virtual network gateway (VPN gateway) overrides the default route for that subnet, directing traffic to 10.20.4.12 through the VPN gateway.
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.
✗
Add a network security group rule that allows traffic to 10.20.4.12.
Why it's wrong here
NSGs filter traffic, but they do not choose the next hop for routing.
✓
Add a more specific UDR for 10.20.4.0/24 that uses the virtual network gateway next hop.
Why this is correct
Azure uses longest-prefix match, so the more specific route overrides the broader 0.0.0.0/0 entry.
Related concept
Read the scenario before looking for a memorised answer.
✗
Increase the priority of the 0.0.0.0/0 route so it is preferred less often.
Why it's wrong here
Route tables do not use priority numbers; prefix length and matching determine the chosen route.
✗
Remove the VPN gateway association from the virtual network.
Why it's wrong here
Removing the gateway would break the desired path instead of directing only this destination correctly.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse NSG rules with routing decisions, thinking that allowing traffic in an NSG will change the path it takes, when in fact NSGs only filter traffic and do not influence the next hop.
Detailed technical explanation
How to think about this question
Azure routes are evaluated using the longest prefix match algorithm, where a more specific prefix (e.g., /24) always takes precedence over a less specific one (e.g., /0), regardless of the order of route creation. The virtual network gateway next hop type is used for routes that direct traffic to a VPN gateway or ExpressRoute gateway, and it requires the gateway to be in the same virtual network. In a hub-and-spoke topology, this configuration is common to force specific traffic through the VPN while other traffic goes through a network virtual appliance (NVA) for inspection.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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: Add a more specific UDR for 10.20.4.0/24 that uses the virtual network gateway next hop. — Option B is correct because User-Defined Routes (UDRs) use the longest prefix match to determine the next hop. The existing 0.0.0.0/0 route sends all outbound traffic to a virtual appliance, but adding a more specific route for 10.20.4.0/24 with a next hop of the virtual network gateway (VPN gateway) overrides the default route for that subnet, directing traffic to 10.20.4.12 through the VPN gateway.
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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