Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company has an Azure virtual network (VNet) in the East US region hosting a web application. They need to securely connect to an on-premises data center in the same region using a dedicated, private network connection with high throughput and low latency. They also need a backup connection for redundancy in case the primary connection fails. Which connectivity 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
Distractor review
Site-to-Site VPN only
A Site-to-Site VPN uses the public internet and cannot provide the dedicated, high-bandwidth connection with low latency required for the primary link.
B
Distractor review
ExpressRoute only
ExpressRoute provides a dedicated private connection, but without a backup link, it does not offer redundancy if the circuit fails.
C
Best answer
ExpressRoute as primary with Site-to-Site VPN as backup
This combination provides a dedicated private connection for primary traffic and a lower-cost VPN as a redundant backup, meeting both performance and redundancy requirements.
D
Distractor review
Azure Virtual WAN with VPN
Virtual WAN is a managed hub-and-spoke networking service, but the requirement for a dedicated private connection is best met by ExpressRoute; VPN alone does not provide the dedicated private path.
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: ExpressRoute as primary with Site-to-Site VPN as backup — Azure ExpressRoute provides a dedicated private connection from on-premises to Azure, offering higher throughput, lower latency, and higher SLA compared to VPN. A Site-to-Site VPN can be used as a backup connection for failover. ExpressRoute alone does not provide redundancy if the circuit fails. VPN as primary does not meet the requirement for dedicated high-bandwidth. Virtual WAN is a managed networking service but still would require ExpressRoute for private 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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