- A
Remove the default route so all traffic uses the system routes.
Why wrong: Removing the default route would send all outbound traffic away from the firewall, not just one destination.
- B
Add a more specific /32 route for 40.90.10.25 with next hop type Internet.
Azure uses longest-prefix matching when selecting routes. A specific /32 route for one destination is more specific than the broader 0.0.0.0/0 forced-tunnel route, so traffic to that IP can bypass the firewall and go directly to the Internet. This is the cleanest way to create a targeted exception without changing the behavior for all other outbound traffic from the subnet.
- C
Create a service endpoint for the server and the update site.
Why wrong: Service endpoints apply to supported Azure PaaS services, not arbitrary Internet IP addresses.
- D
Attach a NAT gateway to the subnet so the server can bypass the firewall.
Why wrong: A NAT gateway changes outbound source addressing, but it does not override a UDR to a firewall appliance.
Quick Answer
The answer is to add a more specific /32 route for 40.90.10.25 with next hop type Internet. This works because user-defined routes (UDRs) follow the longest prefix match principle, meaning a /32 route is more specific than the 0.0.0.0/0 default route and will take precedence for traffic destined to that exact IP address. On the AZ-104 exam, this scenario tests your understanding of route prioritization and how to override a default route for a specific IP without disrupting other traffic. A common trap is thinking you need to modify or remove the existing 0.0.0.0/0 route, but that would break all other outbound traffic; instead, you simply add a narrower route. Remember the memory tip: "The more bits in the mask, the more specific the path"—a /32 always beats a /0.
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 uses a user-defined route that sends 0.0.0.0/0 to a firewall appliance. One server in the subnet must download updates directly from 40.90.10.25 over the Internet, while all other outbound traffic should continue through the firewall. What is the best change?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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 /32 route for 40.90.10.25 with next hop type Internet.
Option B is correct because adding a more specific /32 route for 40.90.10.25 with next hop type Internet overrides the default route (0.0.0.0/0) for traffic destined to that specific IP. User-defined routes (UDRs) follow the longest prefix match principle, so the /32 route takes precedence over the /0 route, allowing the server to reach the update site directly via the internet while all other outbound traffic continues through the firewall 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.
- ✗
Remove the default route so all traffic uses the system routes.
Why it's wrong here
Removing the default route would send all outbound traffic away from the firewall, not just one destination.
- ✓
Add a more specific /32 route for 40.90.10.25 with next hop type Internet.
Why this is correct
Azure uses longest-prefix matching when selecting routes. A specific /32 route for one destination is more specific than the broader 0.0.0.0/0 forced-tunnel route, so traffic to that IP can bypass the firewall and go directly to the Internet. This is the cleanest way to create a targeted exception without changing the behavior for all other outbound traffic from the subnet.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a service endpoint for the server and the update site.
Why it's wrong here
Service endpoints apply to supported Azure PaaS services, not arbitrary Internet IP addresses.
- ✗
Attach a NAT gateway to the subnet so the server can bypass the firewall.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think a NAT gateway or service endpoint can bypass a firewall for specific traffic, but they fail to understand that route precedence (longest prefix match) is the only way to override a default route for a specific destination in Azure.
Detailed technical explanation
How to think about this question
Azure routes are evaluated using the longest prefix match (LPM) algorithm, where a /32 route (specific host) takes precedence over a /0 route (default). The next hop type 'Internet' for a /32 route ensures traffic to that IP is sent directly to the Azure edge without going through the firewall's virtual appliance IP. In practice, this is often used for scenarios like Windows Update or license activation servers that require direct internet access, while maintaining security for other traffic through a network virtual appliance (NVA).
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
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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 /32 route for 40.90.10.25 with next hop type Internet. — Option B is correct because adding a more specific /32 route for 40.90.10.25 with next hop type Internet overrides the default route (0.0.0.0/0) for traffic destined to that specific IP. User-defined routes (UDRs) follow the longest prefix match principle, so the /32 route takes precedence over the /0 route, allowing the server to reach the update site directly via the internet while all other outbound traffic continues through the firewall 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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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 →
Same concept, more angles
1 more ways this is tested on AZ-104
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. 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?
medium- A.Add a network security group rule that allows traffic to 10.20.4.12.
- ✓ B.Add a more specific UDR for 10.20.4.0/24 that uses the virtual network gateway next hop.
- C.Increase the priority of the 0.0.0.0/0 route so it is preferred less often.
- D.Remove the VPN gateway association from the virtual network.
Why B: 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.
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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