Quick Answer
The correct answers are Site-to-Site VPN and ExpressRoute, as these are the two supported methods to connect an on-premises network to Azure. A Site-to-Site VPN uses IPsec/IKE to create an encrypted tunnel over the public internet between your on-premises VPN device and an Azure VPN gateway, providing secure hybrid connectivity. ExpressRoute, by contrast, establishes a dedicated, private connection that bypasses the internet entirely, offering lower latency, higher reliability, and enhanced security. On the AZ-500 exam, this concept tests your understanding of secure hybrid network architectures and the trade-offs between internet-based and private connectivity. A common trap is confusing Point-to-Site VPN (which connects individual clients, not entire networks) with Site-to-Site VPN, or assuming that Azure Bastion or VPN Gateway alone are the answer—remember, Bastion is for RDP/SSH access, not network-to-network linking. Memory tip: think “S2S for the internet, ExpressRoute for the express lane.”
This AZ-500 practice question tests your understanding of secure 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.
Which TWO of the following are supported ways to connect an on-premises network to Azure?
Azure Bastion
Why wrong: For secure RDP/SSH access to VMs.
Azure ExpressRoute
Dedicated private connection.
Point-to-Site VPN
Why wrong: For individual client connections.
Site-to-Site VPN
Encrypted tunnel over internet.
Azure Front Door
Why wrong: Global load balancer, not connectivity.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure ExpressRoute
Azure ExpressRoute (B) is correct because it provides a dedicated, private connection from an on-premises network to Azure, bypassing the public internet for enhanced reliability, lower latency, and higher security. Site-to-Site VPN (D) is correct because it uses IPsec/IKE to create an encrypted tunnel over the internet between an on-premises VPN device and an Azure VPN gateway, enabling secure hybrid connectivity. Both are explicitly supported methods for connecting on-premises networks to Azure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Bastion
Why it's wrong here
For secure RDP/SSH access to VMs.
Azure ExpressRoute
Why this is correct
Dedicated private connection.
Related concept
Read the scenario before looking for a memorised answer.
Point-to-Site VPN
Why it's wrong here
For individual client connections.
Site-to-Site VPN
Why this is correct
Encrypted tunnel over internet.
Related concept
Read the scenario before looking for a memorised answer.
Azure Front Door
Why it's wrong here
Global load balancer, not connectivity.
Common exam traps
The trap here is confusing Azure Bastion (a secure access service for VMs) with a network connectivity solution, or assuming Point-to-Site VPN can connect an entire on-premises network when it only supports individual client connections.
Detailed technical explanation
Site-to-Site VPN relies on IKEv1 or IKEv2 to establish a pair of IPsec tunnels (active/active) for high availability, using pre-shared keys or certificate-based authentication. ExpressRoute uses BGP (Border Gateway Protocol) for dynamic routing between on-premises and Azure, with Service Level Agreements (SLAs) of 99.95% uptime for dedicated circuits. A real-world scenario: a financial institution requiring guaranteed bandwidth and low latency for real-time transactions would choose ExpressRoute over a VPN due to its private, carrier-grade connectivity.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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FAQ
Secure networking — This question tests Secure networking — Read the scenario before looking for a memorised answer..
The correct answer is: Azure ExpressRoute — Azure ExpressRoute (B) is correct because it provides a dedicated, private connection from an on-premises network to Azure, bypassing the public internet for enhanced reliability, lower latency, and higher security. Site-to-Site VPN (D) is correct because it uses IPsec/IKE to create an encrypted tunnel over the internet between an on-premises VPN device and an Azure VPN gateway, enabling secure hybrid connectivity. Both are explicitly supported methods for connecting on-premises networks to Azure.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 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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