- A
Use Azure Policy with built-in initiatives such as 'Enable Azure Monitor for VMs' and 'Configure machines to automatically install updates' and assign them to all subscriptions
Azure Policy can audit and automatically remediate non-compliant VMs using DeployIfNotExists effects.
- B
Create a new Azure Blueprint that includes the required configurations and assign it to all subscriptions
Why wrong: Blueprints define the desired state but do not remediate existing resources.
- C
Use Azure Automation to run scripts that install the agent and enable updates on all VMs
Why wrong: Manual scripting is error-prone and not scalable for 500 VMs.
- D
Configure Microsoft Defender for Cloud to automatically install the Azure Monitor agent and enable updates
Why wrong: Defender for Cloud does not install agents or enable updates automatically; it relies on policies.
Quick Answer
The answer is to use Azure Policy with built-in initiatives such as 'Enable Azure Monitor for VMs' and 'Configure machines to automatically install updates' assigned to all subscriptions. This is correct because Azure Policy provides declarative, continuous compliance enforcement that automatically remediates non-compliant VMs by deploying the required agents and update configurations at scale, directly addressing the security baseline requirements for the Azure Monitor agent, Update Management enrollment, and Defender for Cloud protection. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of how Azure Policy initiatives, rather than individual policies or manual scripting, enforce VM security baseline updates and agent deployment across multiple subscriptions; a common trap is choosing Azure Blueprints alone, which defines the initial environment but lacks ongoing remediation. Remember the memory tip: "Policy enforces, Blueprints deploys"—for continuous compliance and automatic remediation of missing agents or updates, always reach for Azure Policy initiatives.
SC-100 Design security for infrastructure Practice Question
This SC-100 practice question tests your understanding of design security 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.
You are a cybersecurity architect for a multinational corporation that is migrating its on-premises workloads to Azure. The environment includes 500 virtual machines across multiple subscriptions, managed through Azure Policy and Azure Blueprints. The security team has reported that some VMs are not receiving the latest security updates despite being configured for automatic updates via the Azure Update Management solution. Additionally, you have noticed that some VMs are missing the Azure Monitor agent, which is required for security monitoring. The company uses Azure Security Center (now Defender for Cloud) with the standard tier enabled. You need to ensure that all VMs are compliant with the company's security baseline, which requires: (1) all VMs must have the Azure Monitor agent installed, (2) all VMs must be enrolled in the Update Management solution, and (3) all VMs must be protected by Microsoft Defender for Cloud. What should you do to enforce compliance and remediate non-compliant VMs?
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
Use Azure Policy with built-in initiatives such as 'Enable Azure Monitor for VMs' and 'Configure machines to automatically install updates' and assign them to all subscriptions
Option A is correct because Azure Policy with built-in initiatives like 'Enable Azure Monitor for VMs' and 'Configure machines to automatically install updates' provides a declarative, scalable, and continuous compliance enforcement mechanism. These initiatives automatically remediate non-compliant VMs by deploying the required agents and configurations across all subscriptions, ensuring all three security baseline requirements are met 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.
- ✓
Use Azure Policy with built-in initiatives such as 'Enable Azure Monitor for VMs' and 'Configure machines to automatically install updates' and assign them to all subscriptions
Why this is correct
Azure Policy can audit and automatically remediate non-compliant VMs using DeployIfNotExists effects.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a new Azure Blueprint that includes the required configurations and assign it to all subscriptions
Why it's wrong here
Blueprints define the desired state but do not remediate existing resources.
- ✗
Use Azure Automation to run scripts that install the agent and enable updates on all VMs
Why it's wrong here
Manual scripting is error-prone and not scalable for 500 VMs.
- ✗
Configure Microsoft Defender for Cloud to automatically install the Azure Monitor agent and enable updates
Why it's wrong here
Defender for Cloud does not install agents or enable updates automatically; it relies on policies.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Blueprints (which only apply at deployment) with Azure Policy (which provides continuous compliance enforcement and auto-remediation), leading them to choose Blueprints as a one-time fix instead of the ongoing policy-based solution.
Detailed technical explanation
How to think about this question
Azure Policy's 'deployIfNotExists' effect, combined with managed identities, automatically installs the Azure Monitor Agent (AMA) and configures Update Management via the Microsoft Monitoring Agent (MMA) or AMA-based solutions. The built-in initiatives are part of the Azure Security Benchmark, which maps to NIST SP 800-53 and CIS controls, ensuring that compliance is enforced at scale through policy assignments that trigger remediation tasks on non-compliant resources during each evaluation cycle.
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 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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this SC-100 question test?
Design security for infrastructure — This question tests Design security for infrastructure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Azure Policy with built-in initiatives such as 'Enable Azure Monitor for VMs' and 'Configure machines to automatically install updates' and assign them to all subscriptions — Option A is correct because Azure Policy with built-in initiatives like 'Enable Azure Monitor for VMs' and 'Configure machines to automatically install updates' provides a declarative, scalable, and continuous compliance enforcement mechanism. These initiatives automatically remediate non-compliant VMs by deploying the required agents and configurations across all subscriptions, ensuring all three security baseline requirements are met without manual intervention.
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.
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Last reviewed: Jun 11, 2026
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