Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company plans to deploy a critical application in two Azure regions to ensure disaster recovery. The company wants to guarantee that during a major regional outage, the recovery region is physically separated from the primary region and that planned maintenance updates are rolled out sequentially to minimize downtime. Which Azure feature should the company leverage when selecting the secondary region?
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
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Availability Zones
Availability Zones are physically separate datacenters within a single Azure region. They provide high availability within a region but do not offer cross-region physical separation or the sequential update benefit that region pairs provide.
B
Best answer
Region Pairs
Each Azure region is paired with another region in the same geography, providing physical isolation (typically >300 miles) and sequential platform updates. This minimizes the chance of both regions failing simultaneously and ensures that maintenance windows are staggered.
C
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Azure Front Door
Azure Front Door is a global application delivery network that provides load balancing, traffic routing, and acceleration. It does not define which regions are paired or guarantee physical separation and sequential updates between regions.
D
Distractor review
Azure Site Recovery
Azure Site Recovery is a disaster recovery service that replicates workloads from a primary to a secondary location. However, it does not itself provide the underlying region pairing architecture; it can replicate to any region, but the physical isolation and sequential update benefits are inherent to region pairs.
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: Region Pairs — Azure region pairs are sets of two regions within the same geography (e.g., East US and West US) that are physically isolated, at least 300 miles apart. Microsoft ensures that platform updates are applied sequentially across paired regions, so only one region in a pair is updated at a time, reducing the risk of simultaneous failures. This makes region pairs the correct choice for a disaster recovery strategy that requires physical separation and controlled updates. Availability Zones are within a single region, not cross-region. Azure Front Door is a global load balancer, not a region selection feature. Azure Site Recovery is a service that orchestrates replication and failover but does not define the inherent pairing relationship between regions.
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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