- A
Azure Site Recovery
Azure Site Recovery (ASR) is correct because it provides continuous replication of on-premises VMs and physical servers to Azure, enabling orchestrated failover and test failovers for disaster recovery.
- B
Azure Backup
Why wrong: Azure Backup is incorrect because it is designed for backing up files, folders, and virtual machine data for recovery points, not for replicating an entire server with failover capabilities and drill testing.
- C
Azure Migrate
Why wrong: Azure Migrate is incorrect because it is a tool for assessing and migrating on-premises workloads to Azure, not for ongoing replication or disaster recovery failover.
- D
Azure Traffic Manager
Why wrong: Azure Traffic Manager is incorrect because it is a DNS-based traffic load balancer that distributes user traffic across endpoints, not a disaster recovery replication service.
Quick Answer
The answer is Azure Site Recovery. This service is specifically designed for replicating entire on-premises VMs—including the operating system, applications, and data—to Azure, ensuring full workload portability for disaster recovery. Its key technical feature is the test failover capability, which creates an isolated, non-disruptive replica environment in Azure, allowing teams to validate failover processes without affecting the production on-premises workload. On the AZ-900 exam, this question tests your understanding of Azure’s core business continuity services, often contrasting Site Recovery with Azure Backup: remember that Backup protects data for long-term retention, while Site Recovery replicates entire servers for rapid failover and DR drills. A common trap is choosing Azure Backup because it also handles VMs, but it lacks the orchestrated replication and test failover required for non-disruptive drills. Memory tip: think “Site Recovery = Site failover + Recovery drills,” and if the scenario mentions “replicate the entire server” or “test failover,” your answer is always Azure Site 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 runs its line-of-business application on a virtual machine in an on-premises data center. The business continuity team wants to replicate the entire server (including operating system, applications, and data) to Azure so that if the on-premises site fails, the workload can be quickly started in an Azure region. The team also needs the ability to perform non-disruptive disaster recovery drills to validate the failover process. Which Azure service should the team use?
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 Site Recovery
Azure Site Recovery (ASR) is the correct service because it provides orchestrated replication of entire on-premises virtual machines—including OS, applications, and data—to Azure. It supports planned and unplanned failover, and crucially allows non-disruptive disaster recovery drills via test failover, which isolates the replicated environment without impacting the production workload.
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 Site Recovery
Why this is correct
Azure Site Recovery (ASR) is correct because it provides continuous replication of on-premises VMs and physical servers to Azure, enabling orchestrated failover and test failovers for disaster recovery.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Backup
Why it's wrong here
Azure Backup is incorrect because it is designed for backing up files, folders, and virtual machine data for recovery points, not for replicating an entire server with failover capabilities and drill testing.
- ✗
Azure Migrate
Why it's wrong here
Azure Migrate is incorrect because it is a tool for assessing and migrating on-premises workloads to Azure, not for ongoing replication or disaster recovery failover.
- ✗
Azure Traffic Manager
Why it's wrong here
Azure Traffic Manager is incorrect because it is a DNS-based traffic load balancer that distributes user traffic across endpoints, not a disaster recovery replication service.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Backup (which creates point-in-time recovery copies) with Azure Site Recovery (which provides continuous replication and orchestrated failover), leading them to choose Backup for DR scenarios that require non-disruptive drills and rapid failover.
Detailed technical explanation
How to think about this question
Azure Site Recovery uses continuous replication at the block level (via the Mobility Service installed on the VM) to asynchronously copy data to a target Azure region, with a Recovery Point Objective (RPO) as low as 30 seconds. During a test failover, ASR creates a replica VM in an isolated Azure virtual network, allowing validation of the failover process without affecting the production environment or incurring downtime. This is critical for compliance scenarios (e.g., PCI DSS, SOC 2) that mandate periodic DR testing.
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 Site Recovery — Azure Site Recovery (ASR) is the correct service because it provides orchestrated replication of entire on-premises virtual machines—including OS, applications, and data—to Azure. It supports planned and unplanned failover, and crucially allows non-disruptive disaster recovery drills via test failover, which isolates the replicated environment without impacting the production workload.
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.
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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