Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A hub VNet is peered to two spoke VNets. The spokes can reach the hub, but they cannot communicate with each other through the hub. The administrator wants centralized inspection in the hub. What should be deployed and configured?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
An Azure Firewall or other NVA in the hub, plus user-defined routes and forwarding support.
Peering is non-transitive, so centralized inspection requires a forwarder and explicit routing.
B
Distractor review
Only additional peering links between the hub and both spokes.
Extra hub peering already exists and still does not create transitive spoke-to-spoke routing.
C
Distractor review
A private endpoint in the hub for each spoke subnet.
Private endpoints expose services privately, not general transit between VNets.
D
Distractor review
A service endpoint on each spoke subnet to the hub VNet.
Service endpoints are for PaaS access and do not provide VNet transit or inspection.
Common exam trap
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Technical deep dive
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
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Question 2
You are deploying a stateless web application on Azure virtual machines. The solution must automatically add and remove instances based on CPU demand and allow all instances to be managed as one logical group. Which Azure compute feature should you deploy?
Question 3
You are deploying a Windows Server VM for an internal app. The VM must support Secure Boot and vTPM later, its OS disk must survive host moves, and the team wants the lowest-cost managed disk tier that still behaves like a normal writable OS disk. Which two choices should you make? Select two.
Question 4
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Question 5
You need to connect VNet-Hub and VNet-Spoke so that resources in both virtual networks can communicate privately over the Microsoft backbone. Both virtual networks are in the same region. What should you configure?
Question 6
You need to create a storage account that provides the lowest-cost redundant storage for non-critical data and only needs protection against local disk or server failure within a single datacenter. Which redundancy option should you choose?
FAQ
Questions learners often ask
What does this AZ-104 question test?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: An Azure Firewall or other NVA in the hub, plus user-defined routes and forwarding support. — Azure VNet peering is non-transitive, so traffic from one spoke will not automatically pass through the hub to another spoke. If the business wants centralized inspection, the hub needs a forwarding device such as Azure Firewall or another NVA, and the spokes need user-defined routes that send the relevant traffic to that device. This design makes the hub the controlled transit point. Why others are wrong: Simply adding more peering does not turn peering into a transit fabric. Private endpoints and service endpoints solve access to individual Azure services, not spoke-to-spoke connectivity. The missing capability is a forwarder plus explicit routing, because peering alone does not provide transitive routing or inspection through the hub.
What should I do if I get this AZ-104 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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