A company has multiple Azure virtual networks (VNets) in different regions. They want to connect all VNets to each other securely over the Microsoft backbone network, and also connect to their on-premises data center via ExpressRoute. What is the simplest Azure solution to enable connectivity between all VNets and on-premises?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Best answer
Azure Virtual WAN
Azure Virtual WAN provides a centralized hub that connects VNets, VPN sites, and ExpressRoute circuits. It automatically sets up transitive routing between all connected VNets and on-premises, simplifying management.
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VNet peering
VNet peering connects two VNets directly but does not provide transitive routing. Connecting multiple VNets requires a mesh of peerings, which is complex and does not natively include ExpressRoute connectivity without additional gateways.
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ExpressRoute
ExpressRoute provides a dedicated private connection to on-premises, but it does not directly connect multiple VNets. Additional routing configuration or a hub VNet is needed.
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VPN Gateway
VPN Gateway connects an on-premises site to Azure over the internet, but it does not automatically connect multiple VNets. Each VNet would need its own gateway or complex configurations.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company is designing hub-and-spoke networking. Spoke VNets must use a central Azure Firewall for outbound internet traffic. Which two configurations are required?
Question 2
A company is designing private access to a PaaS database from workloads in a VNet. The database should not be reachable over its public endpoint. What should be recommended?
Question 3
A data platform must support analytical queries over petabytes of files in a data lake, while preserving hierarchical namespaces and fine-grained ACLs. Which storage service should you design around?
Question 4
A database workload has an RPO of 15 minutes and an RTO of 4 hours. Cost is more important than near-zero data loss. Which design is usually more appropriate than synchronous multi-region replication?
Question 5
A hub-and-spoke Azure network must centralize outbound inspection and still allow spokes to resolve private endpoint DNS names. Which two components are commonly required? (Choose 2.)
Question 6
A multinational company uses Microsoft Entra ID and several Azure subscriptions. Security administrators need to review privileged role assignments every month and require justification for continued access. Which design should be recommended?
FAQ
Questions learners often ask
What does this AZ-305 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Azure Virtual WAN — Azure Virtual WAN is a networking service that provides a hub-and-spoke architecture, connecting branch offices, VNets, and on-premises sites through a unified orchestration interface. It simplifies connectivity by automatically routing traffic between VNets and over ExpressRoute. VNet peering would require many peerings, and ExpressRoute alone doesn't connect VNets. VPN Gateway alone can't connect multiple VNets across regions without additional configuration.
What should I do if I get this AZ-305 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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