Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A subnet is associated with a NAT gateway, but its route table also contains a 0.0.0.0/0 route to a virtual appliance at 10.2.0.4. The business wants all outbound internet traffic from the VMs to use one static public IP, and inspection by the appliance is no longer required. What should the administrator change?
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
Add a public IP address directly to each virtual machine NIC.
Per-VM public IPs do not provide a single shared outbound address for the entire subnet.
B
Best answer
Remove the 0.0.0.0/0 user-defined route from the subnet.
The default route to the virtual appliance forces all internet-bound traffic away from the subnet's NAT gateway. Because NAT gateway only handles outbound traffic that is not sent to another next hop, the UDR prevents the NAT gateway from being used. Removing the default route allows the subnet to use the NAT gateway's static public IP for outbound internet connections while keeping routing simple.
C
Distractor review
Enable service endpoints for the subnet.
Service endpoints improve access to supported Azure services, but they do not provide a subnet-wide public outbound IP.
D
Distractor review
Change the NAT gateway to a zone-redundant SKU.
NAT gateway does not use a zone-redundant SKU to solve routing precedence or outbound IP selection.
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: Remove the 0.0.0.0/0 user-defined route from the subnet. — A NAT gateway provides a stable outbound public IP for traffic that reaches the internet, but a user-defined route to a virtual appliance takes precedence for that destination. If 0.0.0.0/0 points to the appliance, the NAT gateway will not be used for general internet traffic. Since inspection is no longer required, the correct fix is to remove the overriding default route so the subnet can use the NAT gateway as intended. Why others are wrong: Adding public IPs to each VM defeats the goal of one shared outbound address. Service endpoints are for private access to Azure PaaS services, not internet egress. NAT gateway behavior is not controlled by a special SKU change; the blocking issue here is the UDR that overrides outbound path selection.
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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