- A
Add an NSG rule that allows traffic from AppSpoke to DataSpoke.
Why wrong: NSGs can permit or deny traffic, but they do not create a network path between VNets.
- B
Enable gateway transit on both spoke peerings.
Why wrong: Gateway transit lets a spoke use the hub gateway, but it does not make spoke-to-spoke traffic transitive.
- C
Create a direct VNet peering between AppSpoke and DataSpoke.
Azure VNet peering is not transitive. If two spoke VNets must communicate directly, they need a direct peering between them or another routing design such as an appliance. Because the requirement is simply private connectivity between the app and data VNets, direct peering is the simplest and correct fix. The existing hub peering does not provide that spoke-to-spoke path.
- D
Add a user-defined route in AppSpoke pointing DataSpoke traffic to the hub gateway.
Why wrong: A UDR can change next-hop routing, but it still cannot make peering transitive across the hub gateway.
Quick Answer
The answer is to create a direct VNet peering between AppSpoke and DataSpoke. This is correct because VNet peering establishes a private, low-latency connection using the Microsoft backbone, allowing spoke-to-spoke traffic to bypass both the hub gateway and on-premises networks entirely. On the AZ-104 exam, this scenario tests your understanding of transitive routing limitations—VNet peering is non-transitive, meaning peered spokes cannot communicate through a hub unless explicitly peered with each other. A common trap is assuming the hub gateway automatically routes spoke-to-spoke traffic, but that would force data through on-premises or the hub, violating the requirement for a direct private path. Remember the memory tip: “Spokes don’t share—peer them direct to connect.” This ensures you avoid the costly mistake of routing traffic unnecessarily through the hub or internet.
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 company has a hub VNet and two peered spoke VNets, AppSpoke and DataSpoke. Both spokes can reach on-premises networks through the hub gateway. The app VM in AppSpoke must connect privately to the data VM in DataSpoke without using the internet or sending traffic on-premises first. What should the administrator do?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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
Create a direct VNet peering between AppSpoke and DataSpoke.
Option C is correct because a direct VNet peering between AppSpoke and DataSpoke establishes a private, low-latency connection between the two VNets without routing traffic through the hub gateway or on-premises networks. This satisfies the requirement for a private connection that does not use the internet or traverse on-premises, as VNet peering uses the Microsoft backbone infrastructure.
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 rule that allows traffic from AppSpoke to DataSpoke.
Why it's wrong here
NSGs can permit or deny traffic, but they do not create a network path between VNets.
- ✗
Enable gateway transit on both spoke peerings.
Why it's wrong here
Gateway transit lets a spoke use the hub gateway, but it does not make spoke-to-spoke traffic transitive.
- ✓
Create a direct VNet peering between AppSpoke and DataSpoke.
Why this is correct
Azure VNet peering is not transitive. If two spoke VNets must communicate directly, they need a direct peering between them or another routing design such as an appliance. Because the requirement is simply private connectivity between the app and data VNets, direct peering is the simplest and correct fix. The existing hub peering does not provide that spoke-to-spoke path.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Add a user-defined route in AppSpoke pointing DataSpoke traffic to the hub gateway.
Why it's wrong here
A UDR can change next-hop routing, but it still cannot make peering transitive across the hub gateway.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume gateway transit (Option B) enables direct spoke-to-spoke communication, but it only allows spokes to use the hub’s gateway for on-premises connectivity, not for inter-spoke traffic without going through the hub.
Detailed technical explanation
How to think about this question
VNet peering uses the Azure backbone to route traffic between VNets with minimal latency and no intermediate hops. When peering is established, Azure automatically adds system routes for the peered VNet’s address space, enabling direct communication without user-defined routes. In a hub-and-spoke topology, direct peering between spokes bypasses the hub, which is critical for scenarios like database replication or microservices communication that require low latency and avoid transit through a gateway.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
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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: Create a direct VNet peering between AppSpoke and DataSpoke. — Option C is correct because a direct VNet peering between AppSpoke and DataSpoke establishes a private, low-latency connection between the two VNets without routing traffic through the hub gateway or on-premises networks. This satisfies the requirement for a private connection that does not use the internet or traverse on-premises, as VNet peering uses the Microsoft backbone infrastructure.
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.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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.
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