- A
Azure Availability Zones
Why wrong: 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
Azure Resource Manager
Why wrong: 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
Azure Policy
Why wrong: 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
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.
Quick Answer
The answer is Azure Region Pairs. This feature provides built-in disaster recovery across geographically separated regions by automatically replicating data, such as with geo-redundant storage, to a paired region that is at least 300 miles away, ensuring the geographic separation required by compliance mandates without any manual pairing. On the AZ-900 exam, this question tests your understanding of Azure’s high-availability architecture, specifically how region pairs offer automatic failover during a prolonged regional outage while meeting strict distance requirements. A common trap is confusing region pairs with availability zones, which protect against datacenter failures within a single region, not across separate geographic locations. Remember the memory tip: "Pairs are for places, zones are for spaces"—region pairs handle disaster recovery between distant locations, while availability zones handle fault tolerance within one region.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"least"Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
Clue:
"primary"Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Region Pair
Azure Region Pairs are designed to provide built-in disaster recovery by replicating data (e.g., geo-redundant storage) to a paired region that is at least 300 miles away, ensuring geographic separation without manual pairing. This meets the bank's compliance requirement for a separate location and automatic failover capability during a prolonged regional outage.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure Availability Zones
Why it's wrong here
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.
- ✗
Azure Resource Manager
Why it's wrong here
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.
- ✗
Azure Policy
Why it's wrong here
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.
- ✓
Azure Region Pair
Why this is correct
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.
Clue confirmation
The clue words "least", "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Availability Zones (which protect within a region) with Region Pairs (which protect across regions), especially when the question emphasizes 'geographic separation' and 'prolonged outage.'
Detailed technical explanation
How to think about this question
Azure Region Pairs are predetermined by Microsoft based on latency, data residency, and disaster recovery needs; for example, East US is paired with West US. Geo-redundant storage (GRS) leverages this pairing to asynchronously replicate data to the paired region, with a Recovery Point Objective (RPO) typically under 15 minutes. During a regional outage, Microsoft may initiate a failover to the paired region, but customers can also plan for manual failover using Azure Site Recovery for more granular control.
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.
TExam Day Tips
- 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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Describe Azure architecture and services — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-900 question test?
Describe Azure architecture and services — This question tests Describe Azure architecture and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Region Pair — Azure Region Pairs are designed to provide built-in disaster recovery by replicating data (e.g., geo-redundant storage) to a paired region that is at least 300 miles away, ensuring geographic separation without manual pairing. This meets the bank's compliance requirement for a separate location and automatic failover capability during a prolonged regional outage.
What should I do if I get this AZ-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "least", "primary". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This AZ-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-900 exam.
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