Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a latency-sensitive application on Azure virtual machines and needs to connect its on-premises data center to Azure. The connection must offer high reliability, predictable performance, and a service-level agreement (SLA) from the connectivity provider. It must also bypass the public internet for security and performance reasons. Which Azure service should the company use?
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
Azure VPN Gateway
Incorrect. Azure VPN Gateway sends traffic over the public internet, which does not provide the dedicated, low-latency private connection with an SLA from the carrier that the scenario requires. It is suitable for site-to-site or point-to-site connections but not for high-performance dedicated connectivity.
B
Best answer
Azure ExpressRoute
Correct. Azure ExpressRoute establishes a private, dedicated connection from on-premises to Azure, bypassing the public internet. It provides higher reliability, lower latency, consistent performance, and a service-level agreement from the connectivity partner, meeting all the stated requirements.
C
Distractor review
Azure Virtual WAN
Incorrect. Azure Virtual WAN is a managed wide-area networking service that can orchestrate connectivity across branches and Azure. While it can integrate ExpressRoute circuits, the service itself is not the dedicated private link. For a private dedicated connection, ExpressRoute is the appropriate service.
D
Distractor review
Azure Application Gateway
Incorrect. Azure Application Gateway is a layer-7 load balancer that distributes web traffic to backend servers. It does not provide private connectivity between on-premises and Azure. It operates within Azure and is not used for hybrid network connections.
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.
Related practice questions
Related AZ-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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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 developer is building a serverless application that requires integration with an on-premises SQL Server database for real-time data processing. The on-premises network is connected to Azure via a site-to-site VPN. Which Azure service would allow the function to securely access the on-premises database without exposing it to the public internet?
Question 2
A solutions architect is designing a storage solution for a large media company. The company needs to store video files that are accessed infrequently but must be retained for several years for compliance. Which two Azure storage options meet these requirements? (Select two.)
Question 3
A company deploys a multi-tier application using Azure virtual machines. The web tier VMs must be evenly distributed across two distinct data centers within an Azure region to avoid a single point of failure from an infrastructure outage. Which Azure construct should they use to meet this requirement?
Question 4
A company wants to enforce a set of security policies across all their Azure subscriptions. They have created several individual policy definitions. Which Azure construct should they use to group these policies together and assign them as a single package?
Question 5
A company deploys a line-of-business application on an Azure virtual machine. The IT team wants to ensure the application remains secure. According to the shared responsibility model, which of the following security tasks is the sole responsibility of the customer (the company)?
Question 6
A company develops a web API that runs on Azure App Service. The development team wants to deploy a new version of the API to a staging environment, run integration tests against it, and then gradually shift production traffic to the new version. If any issues are detected, they want to immediately roll back to the previous version without redeploying. Which Azure App Service feature should the team use to meet these requirements?
FAQ
Questions learners often ask
What does this AZ-900 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Azure ExpressRoute — This question tests knowledge of Azure hybrid networking options. Azure ExpressRoute provides a dedicated private connection from on-premises to Azure that does not traverse the public internet. It offers higher reliability, faster speeds, lower latency, and an SLA from the carrier. Azure VPN Gateway uses the internet; Virtual WAN is a managed hub-and-spoke service that can include ExpressRoute but is not itself the dedicated private link; Application Gateway is a web traffic load balancer. Therefore, ExpressRoute is the correct choice.
What should I do if I get this AZ-900 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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