- A
Immutable vault
Why wrong: Immutable vault prevents backup data from being deleted before its retention period, but it does not allow you to specify the retention rules (daily, weekly, monthly durations).
- B
Backup policy with long-term retention
Azure Backup policies allow you to define multiple retention points (daily, weekly, monthly) with specific durations. This meets the need for 30 days daily, 12 weeks weekly, and 12 months monthly.
- C
Backup tiering
Why wrong: Backup tiering moves older backups to the archive tier to reduce cost, but it does not by itself enforce the retention durations. It complements a backup policy that defines retention.
- D
Soft delete
Why wrong: Soft delete provides a safety net by retaining deleted backups for a default period (14 days), but it does not allow configuring different retention durations for daily, weekly, and monthly backups.
Quick Answer
The answer is a backup policy with long-term retention. This is correct because Azure Backup’s long-term retention (LTR) policy allows you to define separate retention durations for each backup frequency—daily, weekly, monthly, and yearly—directly matching the requirement to keep daily backups for 30 days, weekly for 12 weeks, and monthly for 12 months. On the AZ-305 exam, this scenario tests your understanding of how to design a comprehensive data protection strategy using Azure Backup’s granular retention rules, often appearing as a scenario where you must distinguish between a simple backup policy and one with LTR. A common trap is selecting a retention lock or soft delete, which prevent deletion but do not control retention duration. Remember the mnemonic “DWMY” (Daily, Weekly, Monthly, Yearly) to recall the four frequency tiers available in an LTR policy, and that each tier’s retention is configured independently to meet compliance or recovery point objectives.
AZ-305 Design business continuity solutions Practice Question
This AZ-305 practice question tests your understanding of design business continuity 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.
A company runs critical Azure VMs. They want to protect against accidental deletion or corruption of data by implementing a retention policy for Azure Backup. They need to keep daily backups for 30 days, weekly backups for 12 weeks, and monthly backups for 12 months. Which Azure Backup feature should they configure?
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
Backup policy with long-term retention
A backup policy with long-term retention (LTR) in Azure Backup allows you to define granular retention rules for daily, weekly, monthly, and yearly backup points. This directly meets the requirement to keep daily backups for 30 days, weekly for 12 weeks, and monthly for 12 months by configuring the retention duration for each frequency in the backup policy.
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.
- ✗
Immutable vault
Why it's wrong here
Immutable vault prevents backup data from being deleted before its retention period, but it does not allow you to specify the retention rules (daily, weekly, monthly durations).
- ✓
Backup policy with long-term retention
Why this is correct
Azure Backup policies allow you to define multiple retention points (daily, weekly, monthly) with specific durations. This meets the need for 30 days daily, 12 weeks weekly, and 12 months monthly.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Backup tiering
Why it's wrong here
Backup tiering moves older backups to the archive tier to reduce cost, but it does not by itself enforce the retention durations. It complements a backup policy that defines retention.
- ✗
Soft delete
Why it's wrong here
Soft delete provides a safety net by retaining deleted backups for a default period (14 days), but it does not allow configuring different retention durations for daily, weekly, and monthly backups.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Immutable vault or Soft delete with retention policies, but those features address data protection from deletion or tampering, not the ability to specify granular retention durations for different backup frequencies.
Detailed technical explanation
How to think about this question
Azure Backup policies use a Grandfather-Father-Son (GFS) retention model, where you independently set retention for daily, weekly, monthly, and yearly points. The policy engine automatically prunes recovery points once they exceed the configured retention duration, ensuring compliance without manual intervention. In a real-world scenario, if you need to meet regulatory requirements like GDPR or HIPAA, you would combine LTR with Immutable vault to prevent any tampering with the retained backups.
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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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: Backup policy with long-term retention — A backup policy with long-term retention (LTR) in Azure Backup allows you to define granular retention rules for daily, weekly, monthly, and yearly backup points. This directly meets the requirement to keep daily backups for 30 days, weekly for 12 weeks, and monthly for 12 months by configuring the retention duration for each frequency in the backup policy.
What should I do if I get this AZ-305 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-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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