The answer is Azure Automation State Configuration (DSC). This service is the correct choice because it uses PowerShell Desired State Configuration to define and enforce a consistent machine state across both Windows and Linux VMs, automatically remediating any drift from the desired configuration—such as missing software, incorrect registry settings, or disabled services—through either a push or pull model without manual intervention. On the Microsoft Azure Fundamentals AZ-900 exam, this question tests your understanding of Azure’s native configuration management tools, often appearing alongside traps that confuse Azure Automation State Configuration with Azure Policy (which enforces compliance rules on resource properties, not inside the VM) or Azure Update Management (which handles patching only). A reliable memory tip: think of DSC as the “VM babysitter” that ensures every VM stays exactly as you defined it, while Azure Policy is the “security guard” for your Azure resources themselves.
AZ-900 Describe Azure management and governance Practice Question
This AZ-900 practice question tests your understanding of describe azure management and governance. 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 Azure service enables automated configuration management and desired state enforcement for Windows and Linux VMs?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Automation State Configuration
Azure Automation State Configuration (DSC) is the correct service because it provides PowerShell Desired State Configuration (DSC) for Windows and Linux VMs, enabling automated configuration management and enforcement of a desired state. It uses a pull or push model to ensure VMs remain compliant with defined configurations, such as installed software or registry settings, without manual intervention.
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.
Automation State Configuration enforces PowerShell DSC-defined desired states on Windows and Linux VMs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Monitor
Why it's wrong here
Azure Monitor collects metrics and logs; Automation handles configuration enforcement.
✗
Azure Blueprints
Why it's wrong here
Blueprints define resource deployment packages; Automation State Configuration handles ongoing OS configuration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing Azure Policy (which governs Azure resource properties at the control plane) with Azure Automation State Configuration (which manages OS-level settings inside the VM guest), leading candidates to pick Azure Policy because both involve 'compliance' and 'enforcement' terminology.
Detailed technical explanation
How to think about this question
Under the hood, Azure Automation State Configuration uses the PowerShell DSC engine, which compiles MOF (Managed Object Format) files from DSC configurations and applies them via the Local Configuration Manager (LCM) on each VM. For Linux, it leverages the Open Management Infrastructure (OMI) server and the DSC for Linux provider, supporting resources like nxPackage and nxService. A real-world scenario is enforcing consistent security baselines (e.g., disabling weak cipher suites) across a hybrid environment of Windows Server and Ubuntu VMs, where DSC automatically remediates drift every 15 minutes by default.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-900 question in full detail.
Describe Azure management and governance — This question tests Describe Azure management and governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Automation State Configuration — Azure Automation State Configuration (DSC) is the correct service because it provides PowerShell Desired State Configuration (DSC) for Windows and Linux VMs, enabling automated configuration management and enforcement of a desired state. It uses a pull or push model to ensure VMs remain compliant with defined configurations, such as installed software or registry settings, without manual intervention.
What should I do if I get this AZ-900 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.
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Question Discussion
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