- A
Create two local network gateways, each with one on-premises public IP, and connect each to a different IP of the VPN gateway.
This configuration allows the active-active gateway to route traffic through both on-premises devices.
- B
Create one local network gateway that includes both on-premises IP addresses and enable BGP on the connection.
Why wrong: This is valid when using BGP, but the question asks for the minimum configuration without specifying BGP use.
- C
Use active-passive mode and configure a second VPN gateway in the same virtual network.
Why wrong: Active-passive does not use both on-premises devices concurrently, and a second gateway is not supported in the same VNet.
- D
Deploy two separate VPN gateways in different Azure regions.
Why wrong: This provides regional redundancy but does not achieve active-active within a single gateway.
Quick Answer
The answer is to create two local network gateways, each with one on-premises public IP, and connect each to a different IP of the VPN gateway. This is correct because an active-active VPN gateway configuration exposes two distinct public IP addresses on the Azure side, and each on-premises VPN device must be represented by its own local network gateway to establish a separate IPsec tunnel. By pairing each local gateway with a different Azure gateway IP, you create two independent, redundant tunnels, ensuring that if one on-premises device or Azure instance fails, traffic continues through the other tunnel—this is the core of high availability. On the Microsoft Azure Security Engineer Associate AZ-500 exam, this scenario tests your understanding of how active-active mode differs from active-passive, and a common trap is assuming a single local network gateway can handle both on-premises IPs. Remember the memory tip: “two tunnels, two gateways, two IPs”—each on-premises device gets its own local gateway, and each Azure IP gets its own connection.
AZ-500 Secure networking Practice Question
This AZ-500 practice question tests your understanding of secure networking. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 deploy an Azure VPN Gateway in active-active mode to ensure high availability for their site-to-site VPN connection. They have two on-premises VPN devices, each with a distinct public IP address. What is the minimum configuration required for the Azure VPN Gateway to utilize both on-premises devices?
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
Create two local network gateways, each with one on-premises public IP, and connect each to a different IP of the VPN gateway.
Option A is correct because active-active mode requires two distinct IP addresses on the Azure VPN gateway, and each on-premises VPN device must be represented by its own local network gateway. By creating two local network gateways (one per on-premises public IP) and connecting each to a different Azure VPN gateway IP, you establish two independent IPsec tunnels, achieving high availability. This configuration ensures that if one on-premises device or one Azure instance fails, traffic can still flow through the other tunnel.
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.
- ✓
Create two local network gateways, each with one on-premises public IP, and connect each to a different IP of the VPN gateway.
Why this is correct
This configuration allows the active-active gateway to route traffic through both on-premises devices.
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.
- ✗
Create one local network gateway that includes both on-premises IP addresses and enable BGP on the connection.
Why it's wrong here
This is valid when using BGP, but the question asks for the minimum configuration without specifying BGP use.
- ✗
Use active-passive mode and configure a second VPN gateway in the same virtual network.
Why it's wrong here
Active-passive does not use both on-premises devices concurrently, and a second gateway is not supported in the same VNet.
- ✗
Deploy two separate VPN gateways in different Azure regions.
Why it's wrong here
This provides regional redundancy but does not achieve active-active within a single gateway.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think a single local network gateway can hold multiple on-premises IPs or that BGP alone can handle dual tunnels, but Azure requires a separate local network gateway per on-premises device to establish distinct IPsec SAs in active-active mode.
Detailed technical explanation
How to think about this question
In active-active mode, the Azure VPN gateway is deployed with two instances, each assigned a distinct public IP address, and both are active simultaneously. Each local network gateway represents a single on-premises VPN device, and the connection object ties it to one of the Azure gateway IPs, enabling two parallel IPsec tunnels (IKEv1/IKEv2). This design supports load balancing and failover at the network layer, and when combined with BGP, it can provide dynamic routing and automatic path selection across both tunnels.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Secure networking — study guide chapter
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Secure networking practice questions
Targeted practice on this topic area only
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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: Create two local network gateways, each with one on-premises public IP, and connect each to a different IP of the VPN gateway. — Option A is correct because active-active mode requires two distinct IP addresses on the Azure VPN gateway, and each on-premises VPN device must be represented by its own local network gateway. By creating two local network gateways (one per on-premises public IP) and connecting each to a different Azure VPN gateway IP, you establish two independent IPsec tunnels, achieving high availability. This configuration ensures that if one on-premises device or one Azure instance fails, traffic can still flow through the other tunnel.
What should I do if I get this AZ-500 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: "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 11, 2026
This AZ-500 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-500 exam.
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