- A
Add an NSG outbound allow rule for TCP 80 and TCP 443.
Why wrong: NSGs control allow or deny decisions, but they do not choose the outbound next hop for internet traffic.
- B
Remove or replace the 0.0.0.0/0 UDR to the virtual appliance and associate the NAT gateway with the subnet.
A NAT gateway provides stable outbound internet connectivity only when traffic follows the normal internet path from the subnet. The custom default route to a virtual appliance forces traffic away from that path, so the NAT gateway is bypassed. Removing or replacing the forced-tunnel route and then attaching the NAT gateway to the subnet allows outbound internet traffic to use the NAT gateway’s public IPs.
- C
Create a private endpoint for the web workload.
Why wrong: Private endpoints are for private access to PaaS services, not for outbound internet source IP control from a subnet.
- D
Enable VNet peering to a hub network with a firewall.
Why wrong: Peering can extend connectivity, but it does not by itself make the subnet use a NAT gateway for outbound internet traffic.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual 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 web workload in a subnet must use a NAT gateway for outbound internet traffic so the source IP is stable. The subnet currently has a route table with a 0.0.0.0/0 user-defined route to a virtual appliance. What should the administrator change?
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
Remove or replace the 0.0.0.0/0 UDR to the virtual appliance and associate the NAT gateway with the subnet.
The current route table has a 0.0.0.0/0 user-defined route (UDR) pointing to a virtual appliance, which forces all outbound traffic through that appliance. To use a NAT gateway for outbound internet traffic with a stable source IP, the administrator must remove or replace that UDR (so the default route no longer points to the appliance) and associate the NAT gateway with the subnet. The NAT gateway automatically creates a default route (0.0.0.0/0) with a next hop of 'Internet', overriding the appliance route, ensuring traffic egresses via the NAT gateway's public IP.
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.
- ✗
Add an NSG outbound allow rule for TCP 80 and TCP 443.
Why it's wrong here
NSGs control allow or deny decisions, but they do not choose the outbound next hop for internet traffic.
- ✓
Remove or replace the 0.0.0.0/0 UDR to the virtual appliance and associate the NAT gateway with the subnet.
Why this is correct
A NAT gateway provides stable outbound internet connectivity only when traffic follows the normal internet path from the subnet. The custom default route to a virtual appliance forces traffic away from that path, so the NAT gateway is bypassed. Removing or replacing the forced-tunnel route and then attaching the NAT gateway to the subnet allows outbound internet traffic to use the NAT gateway’s public IPs.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a private endpoint for the web workload.
Why it's wrong here
Private endpoints are for private access to PaaS services, not for outbound internet source IP control from a subnet.
When this WOULD be correct
If the question asked how to securely connect an Azure web app to a storage account without exposing it to the public internet, creating a private endpoint for the storage account would be the correct answer.
- ✗
Enable VNet peering to a hub network with a firewall.
Why it's wrong here
Peering can extend connectivity, but it does not by itself make the subnet use a NAT gateway for outbound internet traffic.
When this WOULD be correct
In a scenario where an organization wants to centralize outbound traffic inspection and logging through a firewall in a hub network, while also requiring a stable source IP for specific workloads, enabling VNet peering to a hub network with a firewall would be correct. The firewall would then provide the stable source IP.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓Remove or replace the 0.0.0.0/0 UDR to the virtual appliance and associate the NAT gateway with the subnet.Correct answer▾
Why this is correct
A NAT gateway provides stable outbound internet connectivity only when traffic follows the normal internet path from the subnet. The custom default route to a virtual appliance forces traffic away from that path, so the NAT gateway is bypassed. Removing or replacing the forced-tunnel route and then attaching the NAT gateway to the subnet allows outbound internet traffic to use the NAT gateway’s public IPs.
✗Add an NSG outbound allow rule for TCP 80 and TCP 443.Wrong answer — click to see why▾
Why this is wrong here
An NSG outbound rule allows traffic but does not change the source IP to a stable public IP; the subnet still uses the UDR to the virtual appliance, so the NAT gateway is not used.
★ When this WOULD be the correct answer
In a scenario where the subnet has no UDR for 0.0.0.0/0 and the goal is to restrict outbound traffic to only HTTP/HTTPS, adding an NSG outbound allow rule for TCP 80 and 443 would be correct.
Why candidates choose this
Candidates may think that allowing outbound traffic via NSG is sufficient for internet access, overlooking that the UDR overrides the default route and prevents NAT gateway usage.
✗Create a private endpoint for the web workload.Wrong answer — click to see why▾
Why this is wrong here
A private endpoint is used to securely access Azure PaaS services over a private IP address, not to provide outbound internet traffic with a stable source IP. It does not replace the need for a NAT gateway or modify the subnet's default route.
★ When this WOULD be the correct answer
If the question asked how to securely connect an Azure web app to a storage account without exposing it to the public internet, creating a private endpoint for the storage account would be the correct answer.
Why candidates choose this
Candidates may confuse private endpoints with NAT gateways, thinking both provide outbound connectivity, or they may mistakenly believe that private endpoints can be used to route all outbound traffic.
✗Enable VNet peering to a hub network with a firewall.Wrong answer — click to see why▾
Why this is wrong here
Enabling VNet peering to a hub network with a firewall does not directly provide a stable source IP for outbound traffic from the web workload; it would route traffic through the firewall, which may change the source IP. The requirement is for a NAT gateway to ensure a stable source IP.
★ When this WOULD be the correct answer
In a scenario where an organization wants to centralize outbound traffic inspection and logging through a firewall in a hub network, while also requiring a stable source IP for specific workloads, enabling VNet peering to a hub network with a firewall would be correct. The firewall would then provide the stable source IP.
Why candidates choose this
Candidates may think that routing traffic through a hub firewall via VNet peering is a common pattern for controlling outbound traffic, and they might overlook the specific requirement for a stable source IP that a NAT gateway provides.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think adding a NAT gateway automatically overrides existing UDRs, but in Azure, user-defined routes have higher priority than system routes (including those from NAT gateways), so the existing UDR must be explicitly removed or modified for the NAT gateway to handle outbound traffic.
Detailed technical explanation
How to think about this question
A NAT gateway uses a default route (0.0.0.0/0, next hop 'Internet') that is automatically added to the subnet's effective routes when associated, but it does not override an existing user-defined route (UDR) with a higher priority (UDRs have a higher priority than system routes). Therefore, the existing UDR to the virtual appliance must be removed or replaced to allow the NAT gateway's default route to take effect. In practice, this is often done by deleting the UDR or changing its next hop to 'Internet' and associating the NAT gateway, ensuring all outbound traffic uses the NAT gateway's public IP for a consistent source address.
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.
Visual reference
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.
- →
Implement and Manage Virtual Networking — study guide chapter
Learn the concepts, then practise the questions
- →
Implement and Manage Virtual Networking practice questions
Targeted practice on this topic area only
- →
All AZ-104 questions
1,170 questions across all exam domains
- →
AZ-104 study guide
Full concept coverage aligned to exam objectives
- →
AZ-104 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related AZ-104 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Manage Azure Identities and Governance practice questions
Practise AZ-104 questions linked to Manage Azure Identities and Governance.
Implement and Manage Storage practice questions
Practise AZ-104 questions linked to Implement and Manage Storage.
Deploy and Manage Azure Compute practice questions
Practise AZ-104 questions linked to Deploy and Manage Azure Compute.
Implement and Manage Virtual Networking practice questions
Practise AZ-104 questions linked to Implement and Manage Virtual Networking.
Monitor and Maintain Azure Resources practice questions
Practise AZ-104 questions linked to Monitor and Maintain Azure Resources.
AZ-104 Azure RBAC practice questions
Practise AZ-104 questions linked to AZ-104 Azure RBAC.
AZ-104 storage account practice questions
Practise AZ-104 questions linked to AZ-104 storage account.
AZ-104 virtual network practice questions
Practise AZ-104 questions linked to AZ-104 virtual network.
AZ-104 NSG practice questions
Practise AZ-104 questions linked to AZ-104 NSG.
AZ-104 Azure Monitor practice questions
Practise AZ-104 questions linked to AZ-104 Azure Monitor.
AZ-104 backup practice questions
Practise AZ-104 questions linked to AZ-104 backup.
AZ-104 managed identity practice questions
Practise AZ-104 questions linked to AZ-104 managed identity.
Practice this exam
Start a free AZ-104 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Remove or replace the 0.0.0.0/0 UDR to the virtual appliance and associate the NAT gateway with the subnet. — The current route table has a 0.0.0.0/0 user-defined route (UDR) pointing to a virtual appliance, which forces all outbound traffic through that appliance. To use a NAT gateway for outbound internet traffic with a stable source IP, the administrator must remove or replace that UDR (so the default route no longer points to the appliance) and associate the NAT gateway with the subnet. The NAT gateway automatically creates a default route (0.0.0.0/0) with a next hop of 'Internet', overriding the appliance route, ensuring traffic egresses via the NAT gateway's public IP.
What should I do if I get this AZ-104 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More AZ-104 practice questions
- A storage automation service principal must upload, read, and delete blob data in one container by using Microsoft Entra…
- A subnet contains several application servers. You need to allow inbound TCP 3389 only from a management subnet named Su…
- A subscription admin wants to investigate who changed a resource and also review the platform-generated events for that…
- Based on the exhibit, which Azure feature should the administrator use to track this kind of platform-wide service issue…
- An administrator wants a script running on an Azure VM to create a resource in Azure without storing any passwords or cl…
- A PowerShell script runs on an Azure VM every night and uses Azure CLI commands to create tags and VM resources in anoth…
Last reviewed: Jun 11, 2026
This AZ-104 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-104 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.