Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company plans to deploy a critical web application on Azure virtual machines in the West US region. The application must remain available if a single datacenter within that region experiences a complete outage. The company also requires the virtual machines to be connected to each other with low-latency network connectivity. Which Azure feature should the company use to deploy the virtual machines?
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
Availability Set
An Availability Set protects against failures within a single datacenter by distributing VMs across different fault domains (racks) and update domains. It does not protect against a full datacenter outage.
B
Best answer
Availability Zone
Correct. Availability Zones are unique physical locations within an Azure region, each with independent infrastructure. Deploying VMs across multiple zones provides resiliency against datacenter failures while keeping the VMs in the same region for low latency.
C
Distractor review
Region Pair
A region pair consists of two separate Azure regions, typically hundreds of miles apart. This protects against regional disasters but does not provide low-latency connectivity between VMs in the same region.
D
Distractor review
Virtual Machine Scale Set
A Virtual Machine Scale Set is used to deploy and manage a set of identical, auto-scaling VMs. It can use Availability Zones or Availability Sets, but by itself it does not provide datacenter-level isolation.
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 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: Availability Zone — Availability Zones are physically separate datacenters within an Azure region, each with independent power, cooling, and networking. By deploying VMs across multiple Availability Zones, the application is protected from a datacenter-level failure while maintaining low-latency connectivity between zones because they are in the same region. This is the correct choice for the described need.
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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