The answer is to enable Microsoft Defender for Storage and configure anomaly detection alerts. This is correct because Defender for Storage, as part of Microsoft Defender for Cloud, uses machine learning to baseline normal access patterns and triggers alerts when storage account keys are used from an unexpected location, such as an unfamiliar IP address or geographic region. On the Microsoft Cybersecurity Architect exam, this question tests your ability to distinguish between Defender for Cloud’s various plans—common traps include confusing adaptive application controls or just-in-time access with storage-specific anomaly detection. Remember that while Azure Monitor can track storage metrics, only Defender for Storage provides built-in, purpose-built anomaly detection for key usage. Memory tip: think “Keys + Location = Defender for Storage Anomaly” to avoid picking generic monitoring solutions.
SC-100 Practice Question: Design security solutions for applications and data
This SC-100 practice question tests your understanding of design security solutions for applications and data. 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.
Your organization uses Microsoft Defender for Cloud to protect its Azure workloads. You have an application that runs on Azure Virtual Machines and uses a storage account to store sensitive data. The security team wants to detect when the storage account access keys are used from an unexpected location. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Microsoft Defender for Storage and configure anomaly detection alerts.
Microsoft Defender for Cloud provides adaptive application controls, file integrity monitoring, and just-in-time access, but not specifically for detecting storage key usage from unexpected locations. Microsoft Defender for Storage (part of Defender for Cloud) provides anomaly detection, including unusual access patterns. You can also use Azure Monitor with alerts on storage metrics, but the most direct is Defender for Storage. Option D is correct.
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.
✗
Configure adaptive application controls on the storage account.
Why it's wrong here
Adaptive application controls are for VMs, not storage accounts.
✗
Create an Azure Monitor alert based on the 'Storage Account List Keys' operation.
Why it's wrong here
This alerts on key listing, not usage; usage is not logged by default.
✗
Enable just-in-time VM access in Microsoft Defender for Cloud.
Why it's wrong here
JIT is for restricting VM access, not storage key usage.
✓
Enable Microsoft Defender for Storage and configure anomaly detection alerts.
Why this is correct
Defender for Storage detects unusual patterns, including access from unexpected locations.
Related concept
Static NAT maps one inside address to one outside address.
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 SC-100 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 SC-100 NAT questions on configuration and troubleshooting.
Design security solutions for applications and data — This question tests Design security solutions for applications and data — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable Microsoft Defender for Storage and configure anomaly detection alerts. — Microsoft Defender for Cloud provides adaptive application controls, file integrity monitoring, and just-in-time access, but not specifically for detecting storage key usage from unexpected locations. Microsoft Defender for Storage (part of Defender for Cloud) provides anomaly detection, including unusual access patterns. You can also use Azure Monitor with alerts on storage metrics, but the most direct is Defender for Storage. Option D is correct.
What should I do if I get this SC-100 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 SC-100 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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Question Discussion
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