Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A hub VNet has a VPN gateway connected to on-premises networks. A new spoke VNet must reach on-premises resources through the existing hub gateway without deploying another gateway. What peering configuration should the administrator use?
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
Distractor review
Enable forwarded traffic on both peerings and create a route table in the spoke.
Forwarded traffic is useful in some hub-and-spoke designs, but it does not by itself allow the spoke to use the hub's VPN gateway for on-premises connectivity.
B
Best answer
Enable gateway transit on the hub peering and use remote gateways on the spoke peering.
This is the standard configuration for letting a spoke VNet use an existing hub VPN gateway. The hub side must allow gateway transit, and the spoke side must be configured to use the remote gateway. Together, these settings let the spoke inherit on-premises connectivity through the hub without deploying a separate gateway.
C
Distractor review
Deploy a private endpoint in the spoke for each on-premises subnet.
Private endpoints are for reaching supported Azure PaaS services privately. They do not provide general connectivity to on-premises networks or replace a VPN gateway.
D
Distractor review
Create a service endpoint on the spoke subnet for Microsoft.Network.
Service endpoints do not route spoke traffic to on-premises networks through a VPN gateway. They only optimize and secure access to certain Azure services.
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
A route table contains these entries: 10.0.0.0/8 with next hop Virtual appliance, and 10.1.1.0/24 with next hop Virtual network gateway. Which next hop will Azure use for traffic to 10.1.1.5?
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
You need to deploy several identical virtual machines and ensure that the failure of a single Azure host does not affect all of them. Which feature should you use?
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: Enable gateway transit on the hub peering and use remote gateways on the spoke peering. — To let a spoke use a hub VPN gateway, the peering must be configured for gateway transit on the hub side and remote gateways on the spoke side. This avoids deploying duplicate gateways and preserves a central connectivity model. It is commonly used in hub-and-spoke topologies where on-premises reachability is shared with multiple spokes. Why others are wrong: Forwarded traffic is not enough to borrow the hub gateway. Private endpoints are only for Azure PaaS services, not on-premises routing. Service endpoints do not create hybrid connectivity and cannot provide access to a site-to-site VPN path.
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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