- A
A private DNS zone
Why wrong: DNS affects name resolution, not forced routing through the appliance.
- B
A user-defined route with a next hop of Virtual Appliance
This explicitly steers traffic from the subnet to the NVA for inspection.
- C
A service endpoint for Microsoft.Storage
Why wrong: Service endpoints optimize access to Azure services, not all internet-bound traffic.
- D
A NAT gateway on the NVA subnet only
Why wrong: This does not by itself redirect the spoke subnet traffic through the NVA.
Question 1,021 of 1,170
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.
Your company deploys a network virtual appliance (NVA) in a hub subnet. All outbound internet traffic from Subnet-App in a spoke VNet must pass through the NVA for inspection. What should you configure on Subnet-App?
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
✓
A user-defined route with a next hop of Virtual Appliance
A user-defined route (UDR) with a next hop of Virtual Appliance forces all outbound traffic from Subnet-App to be forwarded to the NVA for inspection. This overrides Azure's default system route for 0.0.0.0/0, which normally sends internet-bound traffic directly to the internet. By specifying the NVA's private IP as the next hop, you ensure traffic is routed through the hub subnet for inspection before leaving the 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.
- ✗
A private DNS zone
- ✓
A user-defined route with a next hop of Virtual Appliance
Why this is correct
This explicitly steers traffic from the subnet to the NVA for inspection.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A service endpoint for Microsoft.Storage
Why it's wrong here
Service endpoints optimize access to Azure services, not all internet-bound traffic.
When this WOULD be correct
A service endpoint for Microsoft.Storage would be correct if the question asked: 'You need to ensure that traffic from Subnet-App to Azure Storage accounts uses the Azure backbone network instead of the public internet.' In that scenario, enabling a service endpoint on the subnet provides secure and optimized connectivity to Storage.
- ✗
A NAT gateway on the NVA subnet only
Why it's wrong here
This does not by itself redirect the spoke subnet traffic through the NVA.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓A user-defined route with a next hop of Virtual ApplianceCorrect answer▾
Why this is correct
This explicitly steers traffic from the subnet to the NVA for inspection.
✗A private DNS zoneWrong answer — click to see why▾
Why this is wrong here
A private DNS zone resolves custom domain names within a VNet, not route traffic. It cannot force outbound traffic through an NVA.
★ When this WOULD be the correct answer
When you need to resolve a custom domain name (e.g., contoso.com) to a private IP address within a VNet, you would create a private DNS zone and link it to the VNet.
Why candidates choose this
Candidates may confuse DNS resolution with traffic routing, thinking a private DNS zone can redirect traffic to the NVA.
✗A service endpoint for Microsoft.StorageWrong answer — click to see why▾
Why this is wrong here
A service endpoint for Microsoft.Storage allows direct access to Azure Storage from a subnet without going through the internet, but it does not redirect or inspect outbound internet traffic. The requirement is to force all outbound traffic through the NVA, which requires a user-defined route, not a service endpoint.
★ When this WOULD be the correct answer
A service endpoint for Microsoft.Storage would be correct if the question asked: 'You need to ensure that traffic from Subnet-App to Azure Storage accounts uses the Azure backbone network instead of the public internet.' In that scenario, enabling a service endpoint on the subnet provides secure and optimized connectivity to Storage.
Why candidates choose this
Candidates may confuse service endpoints with routing or think that service endpoints can be used to force traffic through an NVA, not understanding that service endpoints only affect traffic to specific Azure services and do not redirect general internet traffic.
✗A NAT gateway on the NVA subnet onlyWrong answer — click to see why▾
Why this is wrong here
A NAT gateway provides source network address translation for outbound traffic but does not force traffic through an NVA for inspection; it only changes the source IP and allows direct internet access.
★ When this WOULD be the correct answer
If the requirement is to provide outbound internet connectivity to a subnet with a single, predictable public IP address (e.g., for whitelisting), and no inspection is needed, you would configure a NAT gateway on the subnet or its route table.
Why candidates choose this
Candidates may confuse NAT gateway with a means to route traffic through an NVA, not realizing that NAT gateway is for source translation and does not redirect traffic to a next hop.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse a NAT gateway (which translates source IPs) with a route-based forced tunneling solution, or they assume a service endpoint can redirect traffic through an NVA, when in fact service endpoints bypass forced tunneling by design.
Detailed technical explanation
How to think about this question
User-defined routes are implemented as entries in the effective route table of a subnet, with a next hop type of 'Virtual Appliance' requiring the private IP address of the NVA. The route for 0.0.0.0/0 with next hop Virtual Appliance overrides the default system route, but you must also ensure that the NVA itself can route the traffic (e.g., IP forwarding enabled on its NIC) and that the hub subnet has a default route (e.g., to an internet gateway) to avoid a routing loop. In a hub-and-spoke topology, this is often combined with VNet peering and 'Use remote virtual network gateway' settings to enable forced tunneling.
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.
Visual reference
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: A user-defined route with a next hop of Virtual Appliance — A user-defined route (UDR) with a next hop of Virtual Appliance forces all outbound traffic from Subnet-App to be forwarded to the NVA for inspection. This overrides Azure's default system route for 0.0.0.0/0, which normally sends internet-bound traffic directly to the internet. By specifying the NVA's private IP as the next hop, you ensure traffic is routed through the hub subnet for inspection before leaving the 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
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