- A
Enable global VNet peering on the peering connections.
Global VNet peering enables peering across regions over the Microsoft backbone.
- B
Set up ExpressRoute circuits from each region to Microsoft.
Why wrong: ExpressRoute connects on-premises to Azure, not VNets to VNets.
- C
Deploy Azure Firewall in each virtual network and route traffic through it.
Why wrong: Azure Firewall provides security but does not connect virtual networks or ensure backbone routing.
- D
Deploy Azure VPN Gateway in each virtual network and configure site-to-site VPN connections.
Why wrong: Site-to-site VPN uses the internet, not the Microsoft backbone, and may introduce higher latency.
- E
Configure VNet peering between each pair of virtual networks.
VNet peering uses the Microsoft backbone and can be configured across regions using global VNet peering.
Quick Answer
The correct answer is to configure VNet peering between each pair of virtual networks. This works because VNet peering uses the Microsoft backbone network to route traffic, and when you enable global VNet peering across regions, all traffic remains on that private, high-performance backbone. For encrypted cross-region VNet peering, you must also use a VPN gateway or enable encryption on the peering itself, but the key concept tested here is that only VNet peering leverages the Microsoft backbone for cross-region traffic, minimizing latency by avoiding the public internet. On the AZ-500 exam, this question tests your understanding of network segmentation and data protection in transit; a common trap is choosing Azure VPN Gateway, which encrypts but routes over the internet, or ExpressRoute, which connects on-premises networks, not VNets. Remember the memory tip: “Peering is private, VPN is public” — for backbone-only, encrypted cross-region traffic, always pair VNet peering with its global variant.
AZ-500 Secure networking Practice Question
This AZ-500 practice question tests your understanding of secure networking. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
You are responsible for securing a multi-region Azure environment. The environment includes virtual networks in three regions: East US, West Europe, and Southeast Asia. You need to ensure that all traffic between these virtual networks is encrypted and travels over the Microsoft backbone network. Additionally, you must minimize latency for cross-region traffic. Which TWO configurations should you implement? (Choose two.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Enable global VNet peering on the peering connections.
Option A is correct: VNet peering connects virtual networks over the Microsoft backbone. Option D is correct: Global VNet peering allows peering across regions and uses the Microsoft backbone. Option B is incorrect because Azure VPN Gateway encrypts traffic but does not use the Microsoft backbone (it uses the internet). Option C is incorrect because ExpressRoute connects on-premises, not VNets. Option E is incorrect because Azure Firewall does not provide cross-region connectivity.
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.
- ✓
Enable global VNet peering on the peering connections.
Why this is correct
Global VNet peering enables peering across regions over the Microsoft backbone.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Set up ExpressRoute circuits from each region to Microsoft.
Why it's wrong here
ExpressRoute connects on-premises to Azure, not VNets to VNets.
- ✗
Deploy Azure Firewall in each virtual network and route traffic through it.
Why it's wrong here
Azure Firewall provides security but does not connect virtual networks or ensure backbone routing.
- ✗
Deploy Azure VPN Gateway in each virtual network and configure site-to-site VPN connections.
Why it's wrong here
Site-to-site VPN uses the internet, not the Microsoft backbone, and may introduce higher latency.
- ✓
Configure VNet peering between each pair of virtual networks.
Why this is correct
VNet peering uses the Microsoft backbone and can be configured across regions using global VNet peering.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
What to study next
Got this wrong? Here's your next step.
Identify which AZ-500 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
- →
Secure networking — study guide chapter
Learn the concepts, then practise the questions
- →
Secure networking practice questions
Targeted practice on this topic area only
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Microsoft Azure Security Engineer Associate AZ-500 study guide
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AZ-500 practice test guide
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FAQ
Questions learners often ask
What does this AZ-500 question test?
Secure networking — This question tests Secure networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable global VNet peering on the peering connections. — Option A is correct: VNet peering connects virtual networks over the Microsoft backbone. Option D is correct: Global VNet peering allows peering across regions and uses the Microsoft backbone. Option B is incorrect because Azure VPN Gateway encrypts traffic but does not use the Microsoft backbone (it uses the internet). Option C is incorrect because ExpressRoute connects on-premises, not VNets. Option E is incorrect because Azure Firewall does not provide cross-region connectivity.
What should I do if I get this AZ-500 question wrong?
Identify which AZ-500 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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 20, 2026
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