- A
Add a more specific user-defined route for 172.16.1.0/24 with next hop type Internet.
A longer prefix beats the broader 0.0.0.0/0 route, so only that destination uses the Internet path.
- B
Associate the route table with the subnet that contains the server.
The route table must be linked to the subnet before Azure can apply the custom next-hop selection.
- C
Create an NSG rule that allows outbound Internet traffic.
Why wrong: NSGs control filtering, but they do not determine which next hop Azure chooses for the packet.
- D
Enable a service endpoint for the Internet destination.
Why wrong: Service endpoints are for supported Azure services, not for routing general Internet traffic directly.
- E
Change the subnet address space to a smaller CIDR.
Why wrong: Subnet size does not decide next-hop behavior when a specific UDR already matches the destination.
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 subnet already has a 0.0.0.0/0 route that sends traffic to a virtual appliance at 10.1.1.4. One server in that subnet must reach 172.16.1.0/24 directly through the Internet, while all other traffic should still use the appliance. Which two actions are required? Select two.
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
Add a more specific user-defined route for 172.16.1.0/24 with next hop type Internet.
A is correct because a more specific user-defined route (UDR) for 172.16.1.0/24 with next hop type Internet overrides the existing 0.0.0.0/0 route that points to the virtual appliance. Azure uses longest prefix match, so the /24 route takes precedence for traffic to that destination, sending it directly to the Internet instead of through the appliance.
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 more specific user-defined route for 172.16.1.0/24 with next hop type Internet.
Why this is correct
A longer prefix beats the broader 0.0.0.0/0 route, so only that destination uses the Internet path.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Associate the route table with the subnet that contains the server.
Why this is correct
The route table must be linked to the subnet before Azure can apply the custom next-hop selection.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create an NSG rule that allows outbound Internet traffic.
Why it's wrong here
NSGs control filtering, but they do not determine which next hop Azure chooses for the packet.
When this WOULD be correct
An NSG rule allowing outbound Internet traffic would be correct in a scenario where a virtual machine needs to access the Internet but is blocked by a default deny rule, and the routing is already in place (e.g., a default route via the Internet). The question would ask: 'Which action is required to allow a VM to reach the Internet?'
- ✗
Enable a service endpoint for the Internet destination.
Why it's wrong here
Service endpoints are for supported Azure services, not for routing general Internet traffic directly.
When this WOULD be correct
A question where a subnet needs to access an Azure service (e.g., Azure Storage) over the Azure backbone instead of the public Internet, and you must ensure traffic stays within the Microsoft network. Enabling a service endpoint on the subnet and creating a route with next hop 'VirtualNetworkServiceEndpoint' would be correct.
- ✗
Change the subnet address space to a smaller CIDR.
Why it's wrong here
Subnet size does not decide next-hop behavior when a specific UDR already matches the destination.
When this WOULD be correct
A question where a subnet has too many IP addresses and you need to reduce the address space to meet a requirement, such as aligning with a limited IP range from a network design or to avoid overlapping with another subnet.
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.
✓Add a more specific user-defined route for 172.16.1.0/24 with next hop type Internet.Correct answer▾
Why this is correct
A longer prefix beats the broader 0.0.0.0/0 route, so only that destination uses the Internet path.
✗Create an NSG rule that allows outbound Internet traffic.Wrong answer — click to see why▾
Why this is wrong here
The question is about routing traffic to a specific destination via the Internet, not about allowing outbound traffic through NSG rules. NSG rules control traffic that is already being routed; they do not determine the path traffic takes. The correct solution involves adding a user-defined route, not an NSG rule.
★ When this WOULD be the correct answer
An NSG rule allowing outbound Internet traffic would be correct in a scenario where a virtual machine needs to access the Internet but is blocked by a default deny rule, and the routing is already in place (e.g., a default route via the Internet). The question would ask: 'Which action is required to allow a VM to reach the Internet?'
Why candidates choose this
Candidates may confuse network security groups (which filter traffic) with routing (which directs traffic). They might think that allowing outbound traffic via NSG is necessary for Internet access, but in this scenario, the routing decision is the primary issue.
✗Enable a service endpoint for the Internet destination.Wrong answer — click to see why▾
Why this is wrong here
Service endpoints are used to secure Azure service access (e.g., Azure Storage, SQL) to a virtual network, not to route traffic to the Internet. They do not affect routing to arbitrary Internet destinations like 172.16.1.0/24.
★ When this WOULD be the correct answer
A question where a subnet needs to access an Azure service (e.g., Azure Storage) over the Azure backbone instead of the public Internet, and you must ensure traffic stays within the Microsoft network. Enabling a service endpoint on the subnet and creating a route with next hop 'VirtualNetworkServiceEndpoint' would be correct.
Why candidates choose this
Candidates may confuse service endpoints with a method to route traffic to the Internet, or think that enabling a service endpoint is necessary for any outbound Internet connectivity, not realizing it is specific to Azure PaaS services.
✗Change the subnet address space to a smaller CIDR.Wrong answer — click to see why▾
Why this is wrong here
Changing the subnet address space to a smaller CIDR does not affect routing to 172.16.1.0/24; it only changes the IP range of the subnet, which would break existing IP assignments and is unrelated to the routing requirement.
★ When this WOULD be the correct answer
A question where a subnet has too many IP addresses and you need to reduce the address space to meet a requirement, such as aligning with a limited IP range from a network design or to avoid overlapping with another subnet.
Why candidates choose this
Candidates may think that shrinking the subnet address space can force traffic to take a different route, confusing subnet sizing with routing behavior.
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 think an NSG rule is needed to allow outbound Internet traffic, but Azure VMs have default outbound connectivity via SNAT, so the routing decision (UDR) is the only missing piece, not a firewall rule.
Detailed technical explanation
How to think about this question
User-defined routes in Azure are evaluated based on the longest prefix match (LPM) algorithm, where a more specific prefix (e.g., /24) always wins over a less specific one (e.g., /0). The next hop type 'Internet' for a UDR directs traffic to the Azure infrastructure's default Internet gateway, which performs SNAT to the server's public IP. In a real-world scenario, this allows a specific server to bypass a network virtual appliance (NVA) for a particular destination, such as accessing a partner's public API, while all other traffic continues through the 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.
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: Add a more specific user-defined route for 172.16.1.0/24 with next hop type Internet. — A is correct because a more specific user-defined route (UDR) for 172.16.1.0/24 with next hop type Internet overrides the existing 0.0.0.0/0 route that points to the virtual appliance. Azure uses longest prefix match, so the /24 route takes precedence for traffic to that destination, sending it directly to the Internet instead of through the appliance.
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
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