Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A global company is designing a disaster recovery solution for a critical application. They plan to deploy the application to two Azure regions. The company wants to minimize the risk of both regions failing simultaneously due to a major platform update or a widespread natural disaster. Which Azure feature provides a specific pairing of regions to meet this goal?
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 Zones within a single region
Availability Zones protect against datacenter failures within one region, not against failures that affect an entire region. They do not span across two separate regions as required by the scenario.
B
Best answer
Azure region pairs
Azure region pairs are designed to provide protection against simultaneous failures by ensuring sequential updates and physical separation. This is the specific feature that pairs regions for disaster recovery purposes.
C
Distractor review
Azure Traffic Manager with geographic routing
Traffic Manager is a DNS-based load balancer that routes traffic to endpoints based on routing methods like geographic proximity. It does not define or guarantee any pairing between regions for disaster recovery or update sequencing.
D
Distractor review
Azure Site Recovery replication between any two regions of your choice
Azure Site Recovery can replicate virtual machines between any two Azure regions, but it does not provide the additional guarantees of sequential updates and physical isolation that are inherent to region pairs. Using a region pair is a recommended best practice when using Site Recovery.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Azure region pairs — Azure region pairs are fixed relationships between two Azure regions within the same geography (e.g., West US and East US). Microsoft ensures that platform updates are rolled out sequentially across the pair, never simultaneously, to minimize downtime. Additionally, physical isolation (at least 300 miles apart in most cases) reduces the risk of a single natural disaster affecting both regions. Data residency for disaster recovery is also maintained within the same geography. Choosing arbitrary regions does not provide these guarantees.
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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