- A
Availability Zones
Why wrong: Availability Zones protect against failures within a single Azure region by placing resources in physically separate datacenters. They do not provide redundancy across different regions, which is required for whole-region disaster recovery.
- B
Azure Resource Manager
Why wrong: Azure Resource Manager is the management and deployment service for Azure resources. It does not offer inherent disaster recovery or cross-region replication capabilities.
- C
Azure Paired Regions
Azure Paired Regions consist of two regions within the same geography that are linked to support disaster recovery. They provide low-latency data replication and are the appropriate choice for protecting against an entire region failure.
- D
Azure Traffic Manager
Why wrong: Azure Traffic Manager is a DNS-based traffic load balancer that can direct users to the nearest available endpoint. While it can be used for failover routing, it does not create the underlying region pairing or data replication needed for disaster recovery.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 company is designing a disaster recovery solution for a critical application. The solution must ensure that if an entire Azure region becomes unavailable due to a natural disaster, the application can fail over to a different region. The company wants to minimize latency between the primary and secondary regions for data replication. Which Azure feature should the company use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
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.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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 Paired Regions
Azure Paired Regions are designed to provide disaster recovery by replicating data across two geographically separated regions within the same geopolitical boundary. If an entire region fails, the paired region can serve as the failover target, and the physical proximity of paired regions minimizes replication latency compared to arbitrary region pairs.
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.
- ✗
Availability Zones
Why it's wrong here
Availability Zones protect against failures within a single Azure region by placing resources in physically separate datacenters. They do not provide redundancy across different regions, which is required for whole-region disaster recovery.
- ✗
Azure Resource Manager
Why it's wrong here
Azure Resource Manager is the management and deployment service for Azure resources. It does not offer inherent disaster recovery or cross-region replication capabilities.
- ✓
Azure Paired Regions
Why this is correct
Azure Paired Regions consist of two regions within the same geography that are linked to support disaster recovery. They provide low-latency data replication and are the appropriate choice for protecting against an entire region failure.
Clue confirmation
The clue words "primary", "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Traffic Manager
Why it's wrong here
Azure Traffic Manager is a DNS-based traffic load balancer that can direct users to the nearest available endpoint. While it can be used for failover routing, it does not create the underlying region pairing or data replication needed for disaster recovery.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Availability Zones (which protect within a region) with cross-region disaster recovery, or assume Azure Resource Manager is involved in replication, when in fact Paired Regions are the correct Azure construct for minimizing latency in cross-region failover.
Detailed technical explanation
How to think about this question
Azure Paired Regions are typically at least 300 miles apart to balance disaster isolation with low-latency replication, and Microsoft guarantees that platform updates are rolled out sequentially across paired regions to avoid simultaneous downtime. For storage accounts using geo-redundant storage (GRS), data is replicated asynchronously to the paired region, with a Recovery Point Objective (RPO) of typically less than 15 minutes.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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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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 Paired Regions — Azure Paired Regions are designed to provide disaster recovery by replicating data across two geographically separated regions within the same geopolitical boundary. If an entire region fails, the paired region can serve as the failover target, and the physical proximity of paired regions minimizes replication latency compared to arbitrary region pairs.
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: "primary", "minimum / minimize". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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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