The correct choice is to configure a VM backup policy with 4-hour frequency and 30-day retention using the default backup extension. This works because Azure Backup’s VM backup policy, when applied to a virtual machine running SQL Server, leverages the VMSnapshot extension to orchestrate application-consistent snapshots—it signals the SQL Writer service to freeze I/O and flush logs before taking the snapshot, ensuring crash-consistent recovery for the database. On the AZ-305 exam, this question tests your ability to distinguish between native VM backup policies and specialized services like Azure SQL Backup or Site Recovery; a common trap is choosing Azure SQL Backup, which only protects Azure SQL databases, not SQL Server on VMs. Remember the key distinction: for SQL on VMs, you use the VM backup policy with the default extension—not a separate SQL backup service. Memory tip: “VM policy, default extension, SQL inside” keeps you focused on the infrastructure layer.
AZ-305 Design infrastructure solutions Practice Question
This AZ-305 practice question tests your understanding of design infrastructure solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
You are designing a backup strategy for Azure virtual machines. The solution must support application-consistent backups for SQL Server databases running on the VMs. You need to ensure that backups are taken every 4 hours and retained for 30 days. What should you configure in Azure Backup?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a VM backup policy with 4-hour frequency and 30-day retention using the default backup extension.
Option D is correct because Azure Backup supports application-consistent backups via the VM backup policy, which can be configured with a frequency of 4 hours and retention of 30 days. The backup extension for Windows (VMSnapshot) ensures application consistency. Option A (Azure Site Recovery) is for replication, not backup. Option B (Azure SQL Backup) is for Azure SQL databases, not VMs. Option C (Azure Backup for SAP HANA) is specific to SAP HANA.
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.
✗
Configure Azure SQL Backup for the SQL Server databases.
Why it's wrong here
Azure SQL Backup is for Azure SQL databases, not SQL Server on VMs.
✓
Configure a VM backup policy with 4-hour frequency and 30-day retention using the default backup extension.
Why this is correct
VM backup policy supports application-consistent backups and custom schedules.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure Azure Site Recovery replication policy with 4-hour frequency.
Why it's wrong here
Site Recovery is for disaster recovery, not backup.
✗
Configure Azure Backup for SAP HANA on the VM.
Why it's wrong here
This is specific to SAP HANA, not general SQL Server.
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
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
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.
Design infrastructure solutions — This question tests Design infrastructure solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a VM backup policy with 4-hour frequency and 30-day retention using the default backup extension. — Option D is correct because Azure Backup supports application-consistent backups via the VM backup policy, which can be configured with a frequency of 4 hours and retention of 30 days. The backup extension for Windows (VMSnapshot) ensures application consistency. Option A (Azure Site Recovery) is for replication, not backup. Option B (Azure SQL Backup) is for Azure SQL databases, not VMs. Option C (Azure Backup for SAP HANA) is specific to SAP HANA.
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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. You are designing a backup strategy for Azure virtual machines that must support application-consistent backups and be capable of restoring to a different Azure region. Which solution should you use?
easy
A.Azure Site Recovery
B.Azure Files
C.Azure Disk Backup
✓ D.Azure Backup
Why D: Option C is correct because Azure Backup supports application-consistent backups for VMs and cross-region restore. Option A is wrong because Azure Site Recovery provides disaster recovery, not backup. Option B is wrong because Azure Disk Backup supports disk-level backups but not application-consistent backups. Option D is wrong because Azure Files is a storage service, not a backup service.
Last reviewed: Jun 20, 2026
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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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