This AZ-500 practice question tests your understanding of secure 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.
Traffic from a spoke VNet must reach the internet through a firewall in the hub VNet. What routing configuration is required on the spoke subnets?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
A default route to the Azure Firewall private IP or virtual appliance next hop
To force spoke traffic to the internet through a firewall in the hub VNet, you must create a user-defined route (UDR) on the spoke subnet with an address prefix of 0.0.0.0/0 and a next hop of the Azure Firewall's private IP or the virtual appliance's IP. This overrides the default system route that would otherwise send internet-bound traffic directly out via Azure's edge, ensuring all egress traffic is inspected and controlled by the firewall.
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 route to Internet with next hop Internet
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
✓
A default route to the Azure Firewall private IP or virtual appliance next hop
Why this is correct
Correct for the stated requirement.
Related concept
Read the scenario before looking for a memorised answer.
✗
An NSG deny rule for 0.0.0.0/0
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
✗
A service endpoint policy
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse NSG rules with routing, thinking a deny rule for 0.0.0.0/0 can force traffic through a firewall, when in fact only a UDR with a specific next hop can redirect traffic to a network virtual appliance.
Detailed technical explanation
How to think about this question
Under the hood, Azure uses system routes for 0.0.0.0/0 with a next hop type of 'Internet' by default; a UDR with a next hop of 'VirtualAppliance' or the firewall's private IP overrides this at the subnet level. The firewall must have a route to the internet (e.g., via its own default route or Azure's default) to forward traffic after inspection. In a real-world hub-and-spoke topology, you also need to ensure the firewall's subnet has a route to the spoke's address space (via VNet peering or gateway) for return traffic to work correctly.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
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: A default route to the Azure Firewall private IP or virtual appliance next hop — To force spoke traffic to the internet through a firewall in the hub VNet, you must create a user-defined route (UDR) on the spoke subnet with an address prefix of 0.0.0.0/0 and a next hop of the Azure Firewall's private IP or the virtual appliance's IP. This overrides the default system route that would otherwise send internet-bound traffic directly out via Azure's edge, ensuring all egress traffic is inspected and controlled by the firewall.
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.
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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