Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a critical ERP system on-premises and plans to extend the application to Azure IaaS VMs for burst capacity. The network team requires a dedicated, private connection between the on-premises data center and Azure that does not traverse the public internet. The connection must offer consistent latency, high bandwidth options up to 10 Gbps, and a financially backed SLA for availability. Which Azure service should the team provision to meet these requirements?
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
Azure ExpressRoute
Correct. ExpressRoute provides a dedicated private circuit from an on-premises network to Azure, bypassing the public internet for improved latency, security, and reliability. It supports high bandwidth (up to 10 Gbps) and offers a financially backed SLA (e.g., 99.95% availability for a single connection).
B
Distractor review
Azure VPN Gateway (site-to-site)
Incorrect. A site-to-site VPN over the public internet does not provide a dedicated private path. It cannot guarantee consistent latency, offers lower maximum bandwidth (typically up to 1.25 Gbps), and has no SLA for throughput or latency.
C
Distractor review
Azure Front Door
Incorrect. Azure Front Door is a global application delivery network that routes HTTP/HTTPS traffic over the public internet to optimize web application performance. It is not a private connectivity service for hybrid cloud connectivity.
D
Distractor review
Azure Bastion
Incorrect. Azure Bastion provides secure browser-based RDP and SSH access to Azure VMs from the Azure portal. It does not create a private connection between on-premises and Azure; it is a management service that operates within Azure.
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 scenario describes the need for a private, high-bandwidth, SLA-backed hybrid connection between on-premises and Azure. Azure ExpressRoute provides exactly that: a dedicated private connection from an on-premises location to Azure using a partner connectivity provider, which bypasses the public internet for lower and more consistent latency, and offers an SLA of 99.95% or higher depending on configuration. ExpressRoute supports bandwidths from 50 Mbps to 10 Gbps. In contrast, Azure VPN Gateway (site-to-site) uses the public internet, offers no bandwidth SLA, and is generally limited to lower bandwidths. Azure Front Door is a global web application load balancer operating over the public internet. Azure Bastion is a PaaS service for secure RDP/SSH access to VMs inside a VNet and does not provide connectivity from on-premises.
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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