- A
Use Azure Site Recovery to replicate the VMs to East US with a recovery plan that includes the VM and disks, and configure failback using reprotection
Azure Site Recovery meets RPO and RTO requirements and supports failback.
- B
Use Azure Migrate to migrate the VMs to East US and then set up replication back to West US
Why wrong: Azure Migrate is for migration, not ongoing replication and failover.
- C
Configure Azure Backup for the VMs with a backup policy that has a 15-minute frequency and replicate backups to the East US region using geo-redundant storage
Why wrong: Azure Backup for Azure VMs has a minimum backup frequency of 1 hour, not 15 minutes.
- D
Use Azure Storage geo-redundant storage (GRS) for the managed disks and manually attach the disks to a new VM in East US during a disaster
Why wrong: GRS provides storage-level replication but does not automate VM failover or meet RTO.
AZ-305 Design business continuity solutions Practice Question
This AZ-305 practice question tests your understanding of design business continuity solutions. 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.
Your organization has a critical application deployed on Azure VMs in the West US region. The application uses a Standard_D8s_v3 VM with two data disks (512 GB each) and a separate log disk (256 GB). The application writes data continuously to the data disks and logs. The business continuity requirements are: RPO of 15 minutes, RTO of 2 hours, and the ability to recover to a specific point in time within the last 7 days. You need to design a disaster recovery solution that replicates the VMs and disks to the East US region. The solution must also support failback to West US after a disaster. What should you do?
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
Use Azure Site Recovery to replicate the VMs to East US with a recovery plan that includes the VM and disks, and configure failback using reprotection
Option C is correct because Azure Site Recovery can replicate Azure VMs to a secondary region with continuous replication meeting RPO of 15 minutes. It supports failback by reprotecting and failing back. Option A is wrong because Azure Backup has RPO of 1 hour for Azure VMs and does not support failback. Option B is wrong because geo-redundant storage (GRS) for managed disks does not provide VM replication or failback. Option D is wrong because Azure Migrate is for migration, not disaster recovery.
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.
- ✓
Use Azure Site Recovery to replicate the VMs to East US with a recovery plan that includes the VM and disks, and configure failback using reprotection
Why this is correct
Azure Site Recovery meets RPO and RTO requirements and supports failback.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Azure Migrate to migrate the VMs to East US and then set up replication back to West US
Why it's wrong here
Azure Migrate is for migration, not ongoing replication and failover.
- ✗
Configure Azure Backup for the VMs with a backup policy that has a 15-minute frequency and replicate backups to the East US region using geo-redundant storage
Why it's wrong here
Azure Backup for Azure VMs has a minimum backup frequency of 1 hour, not 15 minutes.
- ✗
Use Azure Storage geo-redundant storage (GRS) for the managed disks and manually attach the disks to a new VM in East US during a disaster
Why it's wrong here
GRS provides storage-level replication but does not automate VM failover or meet RTO.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 AZ-305 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Design business continuity solutions — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-305 question test?
Design business continuity solutions — This question tests Design business continuity solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Azure Site Recovery to replicate the VMs to East US with a recovery plan that includes the VM and disks, and configure failback using reprotection — Option C is correct because Azure Site Recovery can replicate Azure VMs to a secondary region with continuous replication meeting RPO of 15 minutes. It supports failback by reprotecting and failing back. Option A is wrong because Azure Backup has RPO of 1 hour for Azure VMs and does not support failback. Option B is wrong because geo-redundant storage (GRS) for managed disks does not provide VM replication or failback. Option D is wrong because Azure Migrate is for migration, not disaster recovery.
What should I do if I get this AZ-305 question wrong?
Identify which AZ-305 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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 20, 2026
This AZ-305 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-305 exam.
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