The answer is runtime threat detection for AKS clusters, along with vulnerability assessment for container images and continuous cluster configuration hardening. Runtime threat detection is correct because it monitors AKS node and container activity in real time, analyzing audit logs and behavioral signals to identify post-exploitation activities like crypto-mining, privilege escalation, or suspicious network connections—threats that static scanning cannot catch. On the Microsoft Cybersecurity Architect exam, this question tests your understanding of Defender for Cloud’s workload protection plans; a common trap is confusing runtime detection with vulnerability scanning, which focuses on image-level CVEs rather than active attack behaviors. Remember that runtime detection is the “active defense” layer, while configuration hardening (based on CIS benchmarks) and image vulnerability assessment form the preventive and pre-deployment layers. A useful memory tip: think “run, harden, scan”—runtime, hardening, and scanning are the three pillars securing AKS clusters with Defender for Cloud.
SC-100 Design security solutions for infrastructure Practice Question
This SC-100 practice question tests your understanding of design security solutions for infrastructure. 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.
Which THREE features of Microsoft Defender for Cloud help secure Azure Kubernetes Service (AKS) clusters? (Select three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Defender for Kubernetes (cluster hardening)
Azure Defender for Kubernetes (now part of Microsoft Defender for Cloud's cloud workload protection) provides cluster hardening recommendations by assessing AKS cluster configurations against industry benchmarks like CIS. It identifies misconfigurations such as overly permissive RBAC roles, insecure network policies, or unencrypted secrets, and offers remediation steps to reduce the attack surface.
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.
✗
Advanced threat protection for Azure Cosmos DB
Why it's wrong here
This is for Cosmos DB, not AKS.
✓
Azure Defender for Kubernetes (cluster hardening)
Why this is correct
Provides threat detection and hardening recommendations for AKS.
Related concept
Read the scenario before looking for a memorised answer.
✓
Vulnerability assessment for container images
Why this is correct
Defender for Cloud scans container images for vulnerabilities.
Related concept
Read the scenario before looking for a memorised answer.
✗
DDoS Protection Standard
Why it's wrong here
DDoS Protection is a separate Azure service, not a feature of Defender for Cloud for AKS.
✓
Runtime threat detection for AKS clusters
Why this is correct
Detects suspicious activities at runtime in AKS.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse general Azure security services (like DDoS Protection) or unrelated Defender plans (like Cosmos DB) with the specific Defender for Cloud features that directly protect AKS workloads, leading them to select options that are technically valid Azure services but not applicable to AKS cluster security.
Detailed technical explanation
How to think about this question
Defender for Cloud's vulnerability assessment for container images integrates with Azure Container Registry (ACR) to scan images at rest and during pull operations, using the Qualys scanner to detect known CVEs in OS packages and application dependencies. Runtime threat detection for AKS clusters leverages host-level and cluster-level audit logs (e.g., Kubernetes audit logs, syscalls) to detect suspicious activities like privilege escalation attempts or crypto-mining containers, using machine learning models and threat intelligence feeds.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-100 question in full detail.
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 Defender for Kubernetes (cluster hardening) — Azure Defender for Kubernetes (now part of Microsoft Defender for Cloud's cloud workload protection) provides cluster hardening recommendations by assessing AKS cluster configurations against industry benchmarks like CIS. It identifies misconfigurations such as overly permissive RBAC roles, insecure network policies, or unencrypted secrets, and offers remediation steps to reduce the attack surface.
What should I do if I get this SC-100 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
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This SC-100 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 SC-100 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.