- A
The route table's next hop type is not set to 'Virtual appliance'
For user-defined routes that point to a virtual appliance like Azure Firewall, the next hop type must be 'Virtual appliance'. Setting it to 'Internet' or any other type causes traffic to bypass the firewall.
- B
The route table is not associated with the subnet
Why wrong: The question states the route table is created and associated, so this is unlikely unless misstated.
- C
The hub-spoke peering is not configured correctly
Why wrong: VNet peering is required for connectivity, but if peering is misconfigured, traffic would not flow at all, not bypass the firewall.
- D
Azure Firewall is in a different resource group
Why wrong: Resource group location does not affect routing; firewalls can be in any resource group.
Quick Answer
The answer is that the route table's next hop type is not set to 'Virtual appliance'. When you create a custom route in Azure to force-tunnel traffic through a firewall, the next hop type must be explicitly configured as 'Virtual appliance' rather than left as a default or incorrect value like 'Internet'. If the next hop type is set incorrectly, Azure’s routing engine ignores the custom route and falls back to the system default route for 0.0.0.0/0, which sends spoke traffic directly to the internet without inspection. This scenario directly tests your understanding of Azure custom route configuration, a common trap on the AZ-500 exam where candidates correctly assign the firewall’s private IP but forget to change the next hop type from its default. The exam expects you to know that 'Virtual appliance' is the only next hop type that honors a user-defined route for network virtual appliances. Memory tip: think “VIP” — Virtual appliance, IP address, and Priority all must be set correctly to prevent bypass.
AZ-500 Secure networking Practice Question
This AZ-500 practice question tests your understanding of secure 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 company deploys Azure Firewall in a hub VNet to inspect all outbound traffic from a spoke VNet. They enable VNet peering between the hub and spoke. They create a route table with a default route (0.0.0.0/0) pointing to the firewall's private IP as the next hop, and associate it with the spoke subnets. However, outbound traffic from the spoke subnets is still going directly to the internet, bypassing the firewall. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
The route table's next hop type is not set to 'Virtual appliance'
The most likely cause is that the route table's next hop type is not set to 'Virtual appliance'. When creating a custom route in Azure, the next hop type must be explicitly set to 'Virtual appliance' and the next hop address must be the firewall's private IP. If the next hop type is left as 'Internet' or another value, Azure will ignore the custom route and use the default system route for 0.0.0.0/0, which sends traffic directly to the internet without inspection.
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.
- ✓
The route table's next hop type is not set to 'Virtual appliance'
Why this is correct
For user-defined routes that point to a virtual appliance like Azure Firewall, the next hop type must be 'Virtual appliance'. Setting it to 'Internet' or any other type causes traffic to bypass the firewall.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The route table is not associated with the subnet
Why it's wrong here
The question states the route table is created and associated, so this is unlikely unless misstated.
- ✗
The hub-spoke peering is not configured correctly
Why it's wrong here
VNet peering is required for connectivity, but if peering is misconfigured, traffic would not flow at all, not bypass the firewall.
- ✗
Azure Firewall is in a different resource group
Why it's wrong here
Resource group location does not affect routing; firewalls can be in any resource group.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume any custom route with a firewall IP will work, but Azure requires the next hop type to be explicitly set to 'Virtual appliance' to override the default system route for 0.0.0.0/0.
Detailed technical explanation
How to think about this question
Azure custom routes with a next hop type of 'Virtual appliance' rely on the platform to forward traffic to the specified private IP address. The firewall's private IP must be in a directly connected VNet (the hub) and the route must have a next hop type of 'Virtual appliance'—not 'Internet' or 'None'—for Azure to perform IP forwarding. If the next hop type is incorrect, Azure treats the route as invalid and falls back to the default system route for 0.0.0.0/0, which sends traffic directly to the internet via the spoke's default gateway.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Secure networking — study guide chapter
Learn the concepts, then practise the questions
- →
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Targeted practice on this topic area only
- →
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Microsoft Azure Security Engineer Associate AZ-500 study guide
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AZ-500 practice test guide
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FAQ
Questions learners often ask
What does this AZ-500 question test?
Secure networking — This question tests Secure networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The route table's next hop type is not set to 'Virtual appliance' — The most likely cause is that the route table's next hop type is not set to 'Virtual appliance'. When creating a custom route in Azure, the next hop type must be explicitly set to 'Virtual appliance' and the next hop address must be the firewall's private IP. If the next hop type is left as 'Internet' or another value, Azure will ignore the custom route and use the default system route for 0.0.0.0/0, which sends traffic directly to the internet without inspection.
What should I do if I get this AZ-500 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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
This AZ-500 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-500 exam.
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