The correct answer includes enabling soft delete for Azure Backup, as it protects backup data from accidental or malicious deletion while also ensuring encryption at rest and in transit are properly configured. Azure Backup automatically encrypts data at rest using Storage Service Encryption (SSE) or customer-managed keys, and all backup data is encrypted in transit via HTTPS between the VM and the Recovery Services vault. On the Microsoft Cybersecurity Architect exam, this question tests your understanding of the layered security controls within Azure Backup, often appearing as a multi-select scenario where you must distinguish between required backup encryption features and unrelated technologies like Azure Disk Encryption or Azure Information Protection. A common trap is assuming disk encryption is necessary for backup encryption, but Azure Backup handles encryption independently. Memory tip: think of the three pillars—rest (SSE/CMK), transit (HTTPS), and protection (soft delete)—to remember the correct trio.
SC-100 Design security solutions for infrastructure Practice Question
This SC-100 practice question tests your understanding of design security solutions for infrastructure. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 company uses Azure Backup to protect VMs. You need to ensure that backup data is encrypted at rest and during transit. Which features should you enable? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Backup using Storage Service Encryption (SSE) or customer-managed keys
Options A, C, and D are correct: Azure Backup encrypts data at rest using SSE or customer-managed keys, encrypts in transit using HTTPS, and soft delete prevents accidental deletion. Option B is wrong because Azure Disk Encryption encrypts OS/data disks but is not required for backup encryption. Option E is wrong because Azure Information Protection is for labeling, not backup encryption.
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 Disk Encryption (BitLocker/DM-Crypt)
Why it's wrong here
Encrypts VM disks, but backup encryption is separate.
✓
Azure Backup using Storage Service Encryption (SSE) or customer-managed keys
Read the scenario before looking for a memorised answer.
✓
HTTPS for backup traffic
Why this is correct
Encrypts data in transit.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Information Protection
Why it's wrong here
Data classification, not encryption for backup.
✓
Soft delete for Azure Backup
Why this is correct
Protects against accidental deletion, not encryption but related to data protection.
Related concept
Read the scenario before looking for a memorised answer.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-100 question in full detail.
Identify which SC-100 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 security solutions for infrastructure — This question tests Design security solutions for infrastructure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Backup using Storage Service Encryption (SSE) or customer-managed keys — Options A, C, and D are correct: Azure Backup encrypts data at rest using SSE or customer-managed keys, encrypts in transit using HTTPS, and soft delete prevents accidental deletion. Option B is wrong because Azure Disk Encryption encrypts OS/data disks but is not required for backup encryption. Option E is wrong because Azure Information Protection is for labeling, not backup encryption.
What should I do if I get this SC-100 question wrong?
Identify which SC-100 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.
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Question Discussion
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