Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A multinational bank operates a critical financial application that must remain available even if an entire Azure region experiences a prolonged outage. The bank's compliance team mandates that the disaster recovery data must reside in a separate geographic location that is at least 300 miles away from the primary region to reduce the risk of correlated failures. The solution must use Azure's built-in data replication feature without requiring manual pairing of regions. Which Azure feature meets 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
Distractor review
Azure Availability Zones
Availability Zones are physically separate datacenters within a single Azure region. While they provide protection against datacenter failures, they do not offer geographic separation of at least 300 miles and cannot protect against a full region outage.
B
Distractor review
Azure Resource Manager
Azure Resource Manager is the management layer for deploying and managing resources in Azure. It provides a consistent control plane but does not provide physical geographic separation or built-in data replication for disaster recovery.
C
Distractor review
Azure Policy
Azure Policy is a governance service used to enforce rules and compliance across resources. It cannot provide physical infrastructure placement or built-in replication across geographically separate regions.
D
Best answer
Azure Region Pair
Each Azure region is paired with another region in the same geography (e.g., East US with West US) that is at least 300 miles away. Region pairs are predefined by Azure and enable built-in replication for services like Storage and SQL Database, ensuring data residency and disaster recovery compliance without manual pairing.
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 Pair — Azure region pairs are predefined, fixed pairings of two regions within the same geography (e.g., East US and West US) that are separated by at least 300 miles. This physical isolation ensures that a natural disaster or localized failure affecting one region is unlikely to impact the paired region. Azure automatically services updates to region pairs sequentially, and certain services provide built-in data replication across region pairs (e.g., Azure Storage geo-redundant storage). This design directly supports disaster recovery and data residency compliance without requiring customers to manually pair 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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