The correct combination is to rely on Azure Backup’s built-in encryption, which automatically secures data at rest via Azure Storage Service Encryption (SSE) using 256-bit AES and protects data in transit with HTTPS. This is because Azure Backup stores backup snapshots and recovery points in Azure storage, where SSE encrypts the data before writing it to disk, and all data transferred between your VMs and the Backup vault is encrypted over the network using TLS/HTTPS. On the AZ-500 exam, this question tests your understanding that Azure Backup handles encryption natively without requiring additional configuration like Azure Disk Encryption (which only encrypts VM OS and data disks, not backup data) or manual storage account encryption settings. A common trap is assuming you must enable SSE on a storage account separately, but Azure Backup applies it automatically. Memory tip: think “Backup is built-in secure” — Azure Backup encrypts both resting and moving data by default, so you don’t need extra tools.
AZ-500 Secure compute, storage, and databases Practice Question
This AZ-500 practice question tests your understanding of secure compute, storage, and databases. 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.
You are designing a secure backup strategy for Azure Virtual Machines. The backup data must be encrypted at rest and in transit. Which combination should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Backup automatically encrypts data at rest using Azure Storage Service Encryption and in transit using HTTPS
Azure Backup uses SSE for encryption at rest and HTTPS for in-transit encryption. Option D is correct. Option A is wrong because Azure Disk Encryption encrypts VM disks but not backup data. Option B is wrong because Azure Backup automatically uses SSE and HTTPS. Option C is wrong because Azure Storage Service Encryption is for storage accounts, but backup uses SSE already.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 Backup automatically encrypts data at rest using Azure Storage Service Encryption and in transit using HTTPS
Why this is correct
Azure Backup encrypts backup data at rest with SSE and in transit with HTTPS without additional configuration.
Related concept
Static NAT maps one inside address to one outside address.
✗
Azure Storage Service Encryption and HTTPS
Why it's wrong here
Backup data is stored in a Recovery Services vault, which uses SSE by default.
✗
Azure Backup with customer-managed keys and enforce HTTPS
Why it's wrong here
Azure Backup already uses HTTPS by default; customer-managed keys are optional for at-rest encryption.
✗
Azure Disk Encryption on the VMs and Azure Backup
Why it's wrong here
ADE encrypts VM disks, but backup data is encrypted separately by Azure Backup.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 AZ-500 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-500 NAT questions on configuration and troubleshooting.
Secure compute, storage, and databases — This question tests Secure compute, storage, and databases — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Azure Backup automatically encrypts data at rest using Azure Storage Service Encryption and in transit using HTTPS — Azure Backup uses SSE for encryption at rest and HTTPS for in-transit encryption. Option D is correct. Option A is wrong because Azure Disk Encryption encrypts VM disks but not backup data. Option B is wrong because Azure Backup automatically uses SSE and HTTPS. Option C is wrong because Azure Storage Service Encryption is for storage accounts, but backup uses SSE already.
What should I do if I get this AZ-500 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-500 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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