- A
Create separate management groups per business unit. Enable Microsoft Defender for Cloud on each subscription individually. Use Azure Policy to assign PCI DSS policies per subscription. Configure PIM at the tenant root management group. Use a third-party SIEM to aggregate alerts.
Why wrong: Fragmented management, no centralized compliance dashboard, and reliance on third-party SIEM increases complexity.
- B
Deploy a single management group containing all subscriptions. Enable Microsoft Defender for Cloud with the 'PCI DSS v3.2.1' regulatory compliance dashboard on the management group. Configure Azure Policy to enforce security standards. Enable PIM and configure JIT VM access. Use Microsoft Sentinel as the SIEM, connecting it to Defender for Cloud and on-premises security sources.
Provides centralized management, continuous compliance monitoring, integrated PIM/JIT, and a single SIEM for the SOC.
- C
Deploy a management group hierarchy with policies inherited. Use Microsoft Defender for Cloud's secure score to monitor compliance manually. Implement PIM without JIT. Use Microsoft Sentinel but only for cloud workloads.
Why wrong: Manual compliance monitoring is not continuous; missing JIT increases risk; excluding on-premises logs leaves gaps.
- D
Use a single management group with Azure Policy to enforce PCI DSS controls. Rely on Azure Monitor for security alerts. Do not enable Defender for Cloud to reduce costs. Use PIM for privileged roles. Connect on-premises logs to a Log Analytics workspace for the SOC.
Why wrong: Lacks Defender for Cloud's continuous compliance assessment and threat detection; Azure Monitor alone is insufficient for security monitoring.
Quick Answer
The correct design deploys a single management group containing all subscriptions, enabling centralized policy enforcement and a unified compliance view. This approach aligns with the MCRA by using Microsoft Defender for Cloud with the PCI DSS v3.2.1 regulatory compliance dashboard at the management group level, which continuously monitors and reports on compliance while minimizing operational overhead. For the SOC, Microsoft Sentinel serves as the centralized SIEM, ingesting alerts from Defender for Cloud and on-premises sources to meet the requirement for a single pane of glass across hybrid and multi-cloud environments. Privileged access is secured through PIM and JIT VM access, directly addressing the need to protect Azure resources. On the Microsoft Cybersecurity Architect exam, this question tests your ability to integrate governance, compliance, and security operations into a cohesive architecture—a common trap is choosing Azure Policy alone without Defender for Cloud’s threat detection and compliance dashboards. Memory tip: think “One MG, One Defender, One Sentinel, and PIM+JIT” to recall the four pillars of a PCI DSS and MCRA-aligned solution.
SC-100 Practice Question: Design solutions that align with security best practices and priorities
This SC-100 practice question tests your understanding of design solutions that align with security best practices and priorities. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Contoso is a financial services company migrating critical workloads to Azure. They must comply with PCI DSS and have a Security Operations Center (SOC) team that uses Microsoft Sentinel. The CISO wants to ensure that the security posture aligns with Microsoft's cybersecurity reference architecture (MCRA). You need to design a solution that includes the following requirements: 1) All Azure subscriptions must be managed under a single management group hierarchy with consistent policies. 2) The SOC must have a centralized view of security alerts across all resources, including on-premises servers and multi-cloud environments. 3) Privileged access to Azure resources must be protected using just-in-time (JIT) access and Privileged Identity Management (PIM). 4) Compliance with PCI DSS must be continuously monitored and reported. 5) The solution must minimize operational overhead. What should you include in the design?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Deploy a single management group containing all subscriptions. Enable Microsoft Defender for Cloud with the 'PCI DSS v3.2.1' regulatory compliance dashboard on the management group. Configure Azure Policy to enforce security standards. Enable PIM and configure JIT VM access. Use Microsoft Sentinel as the SIEM, connecting it to Defender for Cloud and on-premises security sources.
Option A is correct because it provides a centralized management group structure for policy enforcement, uses Microsoft Defender for Cloud for continuous compliance monitoring and multicloud visibility, and integrates PIM and JIT for privileged access. Microsoft Sentinel can ingest alerts from Defender for Cloud. Option B is less effective because it lacks centralized policy management and uses separate Defender for Cloud instances. Option C is wrong because it relies on Azure Policy alone without the compliance monitoring and threat detection capabilities of Defender for Cloud. Option D is wrong because it bypasses policy enforcement at the management group level and uses manual processes.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create separate management groups per business unit. Enable Microsoft Defender for Cloud on each subscription individually. Use Azure Policy to assign PCI DSS policies per subscription. Configure PIM at the tenant root management group. Use a third-party SIEM to aggregate alerts.
Why it's wrong here
Fragmented management, no centralized compliance dashboard, and reliance on third-party SIEM increases complexity.
- ✓
Deploy a single management group containing all subscriptions. Enable Microsoft Defender for Cloud with the 'PCI DSS v3.2.1' regulatory compliance dashboard on the management group. Configure Azure Policy to enforce security standards. Enable PIM and configure JIT VM access. Use Microsoft Sentinel as the SIEM, connecting it to Defender for Cloud and on-premises security sources.
Why this is correct
Provides centralized management, continuous compliance monitoring, integrated PIM/JIT, and a single SIEM for the SOC.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Authentication checks who the user is.
- ✗
Deploy a management group hierarchy with policies inherited. Use Microsoft Defender for Cloud's secure score to monitor compliance manually. Implement PIM without JIT. Use Microsoft Sentinel but only for cloud workloads.
Why it's wrong here
Manual compliance monitoring is not continuous; missing JIT increases risk; excluding on-premises logs leaves gaps.
- ✗
Use a single management group with Azure Policy to enforce PCI DSS controls. Rely on Azure Monitor for security alerts. Do not enable Defender for Cloud to reduce costs. Use PIM for privileged roles. Connect on-premises logs to a Log Analytics workspace for the SOC.
Why it's wrong here
Lacks Defender for Cloud's continuous compliance assessment and threat detection; Azure Monitor alone is insufficient for security monitoring.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-100 questions on access control and AAA configuration.
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FAQ
Questions learners often ask
What does this SC-100 question test?
Design solutions that align with security best practices and priorities — This question tests Design solutions that align with security best practices and priorities — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Deploy a single management group containing all subscriptions. Enable Microsoft Defender for Cloud with the 'PCI DSS v3.2.1' regulatory compliance dashboard on the management group. Configure Azure Policy to enforce security standards. Enable PIM and configure JIT VM access. Use Microsoft Sentinel as the SIEM, connecting it to Defender for Cloud and on-premises security sources. — Option A is correct because it provides a centralized management group structure for policy enforcement, uses Microsoft Defender for Cloud for continuous compliance monitoring and multicloud visibility, and integrates PIM and JIT for privileged access. Microsoft Sentinel can ingest alerts from Defender for Cloud. Option B is less effective because it lacks centralized policy management and uses separate Defender for Cloud instances. Option C is wrong because it relies on Azure Policy alone without the compliance monitoring and threat detection capabilities of Defender for Cloud. Option D is wrong because it bypasses policy enforcement at the management group level and uses manual processes.
What should I do if I get this SC-100 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related SC-100 questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jun 21, 2026
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