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 company wants to peer two Azure virtual networks so that workloads can communicate privately. VNet-A uses 10.10.0.0/16. VNet-B is being designed now. Which address space should be chosen for VNet-B?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
10.11.0.0/16, because it does not overlap and is still within a private IPv4 range.
Option B is correct because VNet peering requires non-overlapping address spaces to enable direct private IP connectivity between resources. 10.11.0.0/16 is a unique private IPv4 range (RFC 1918) that does not overlap with VNet-A's 10.10.0.0/16, ensuring successful peering without routing conflicts.
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.
✗
10.10.5.0/24, because it is a smaller subnet inside the same private range.
Why it's wrong here
This range overlaps with VNet-A's address space, so it cannot be used for peering.
✓
10.11.0.0/16, because it does not overlap and is still within a private IPv4 range.
Why this is correct
This is a non-overlapping private address space, which is required for VNet peering to work properly.
Related concept
Read the scenario before looking for a memorised answer.
✗
10.10.0.0/24, because peering automatically separates overlapping subnets.
Why it's wrong here
Azure does not allow overlapping address spaces for peered VNets, even if the subnet masks differ.
✗
192.168.1.0/24, because peered networks must always use the 192.168.x.x range.
Why it's wrong here
Any private range can be used, as long as it does not overlap with the other network.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume smaller subnets within the same larger range can be peered because they are 'different subnets,' but Azure VNet peering requires completely non-overlapping address spaces at the VNet level, not just at the subnet level.
Detailed technical explanation
How to think about this question
Azure VNet peering uses the Azure backbone to route traffic between VNets, relying on the system routes that are automatically created for each address space. If address spaces overlap, Azure cannot resolve which VNet should receive the traffic, causing peering to fail or resulting in asymmetric routing. In real-world scenarios, overlapping address spaces often occur during mergers or migrations, requiring careful re-IP planning or use of NAT gateways to enable connectivity.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-104 question in full detail.
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: 10.11.0.0/16, because it does not overlap and is still within a private IPv4 range. — Option B is correct because VNet peering requires non-overlapping address spaces to enable direct private IP connectivity between resources. 10.11.0.0/16 is a unique private IPv4 range (RFC 1918) that does not overlap with VNet-A's 10.10.0.0/16, ensuring successful peering without routing conflicts.
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.
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Question Discussion
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