Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A company is designing a hub-spoke network topology across multiple Azure regions. They plan to deploy a third-party network virtual appliance (NVA) in the hub for traffic inspection. They require that all traffic between spokes in different regions must be routed through the hub NVA, and they want to minimize the number of peered connections. Which solution should they implement?
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.
A
Best answer
VNet peering with user-defined routes (UDRs) in each spoke pointing to the NVA IP in the hub
UDRs enforce traffic routing through the hub NVA; each spoke peers only to the hub, minimizing peering connections.
B
Distractor review
Azure Virtual WAN with a secured hub using Azure Firewall
Virtual WAN uses Azure Firewall, not a third-party NVA, and requires a different deployment model not aligned with the requirement.
C
Distractor review
Azure VNet-to-VNet VPN gateways between all spokes
This creates a full mesh of VPN connections, increasing complexity and cost, and does not route through the hub NVA.
D
Distractor review
Azure ExpressRoute with private peering
ExpressRoute is designed for on-premises to Azure connectivity, not for inter-spoke traffic within Azure.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: VNet peering with user-defined routes (UDRs) in each spoke pointing to the NVA IP in the hub — Using VNet peering with user-defined routes (UDRs) in each spoke that force traffic destined to other spokes to go through the hub NVA's IP address is a common approach. This requires peering each spoke to the hub and configuring UDRs. Azure Virtual WAN with Azure Firewall is a managed alternative but uses Microsoft's firewall, not a third-party NVA. VPN gateways create full mesh, increasing connections. ExpressRoute is for on-premises connectivity.
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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