AZ-204 Practice Question: Monitor, troubleshoot, and optimize Azure solutions
Your Azure Kubernetes Service (AKS) cluster experiences node failures. Which Azure service provides automated node repair?
⚠ Common exam trap
Watch out — candidates often confuse Azure Monitor's alerting capabilities or Microsoft Defender for Cloud's security recommendations with actual automated remediation, but neither service performs node-level repair actions in AKS.
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
✓
AKS node auto-repair
C is correct because AKS node auto-repair is a built-in feature that automatically detects unhealthy nodes (based on Node Conditions like 'NotReady' or 'DiskPressure') and initiates repair actions such as reimaging the node. This feature is specific to AKS and operates at the cluster level without requiring external services.
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 Sentinel
Why it's wrong here
Azure Sentinel is a cloud-native Security Information and Event Management (SIEM) and Security Orchestration, Automation, and Response (SOAR) solution. Its primary function is to collect security data from various sources, detect threats, and provide tools for incident investigation and automated response playbooks. While it can alert on security-related node issues, it does not possess the capability to automatically repair unhealthy AKS nodes experiencing operational problems.
- ✗
Microsoft Defender for Cloud
Why it's wrong here
Microsoft Defender for Cloud offers Cloud Security Posture Management (CSPM) and Cloud Workload Protection Platform (CWPP) capabilities across hybrid and multi-cloud environments. It provides security recommendations, vulnerability assessments, and advanced threat protection for various Azure resources, including AKS clusters. However, its role is to identify and protect against security threats and misconfigurations, not to automatically diagnose and repair underlying operational health issues of AKS nodes.
- ✓
AKS node auto-repair
Why this is correct
AKS node auto-repair is a built-in feature designed to automatically monitor and remediate unhealthy worker nodes within an Azure Kubernetes Service cluster. It proactively identifies issues such as unresponsive nodes, disk space problems, or failed kubelet processes. Upon detecting an unhealthy state, this feature attempts to restart the node or, if necessary, reimage it to restore its operational health without manual intervention. This directly addresses node health problems.
- ✗
Azure Monitor
Why it's wrong here
Azure Monitor is a comprehensive monitoring solution that collects, analyzes, and acts on telemetry data from Azure and on-premises environments. It provides insights into the performance and health of applications and infrastructure, enabling users to set up alerts for various metrics and logs. While crucial for identifying node health issues and triggering notifications, Azure Monitor itself does not have the inherent capability to automatically perform repair actions on unhealthy AKS nodes.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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