Question 265 of 985

Describe security, compliance, privacy, and trust in Microsoft 365 →mediumMultiple SelectObjective-mapped

MS-900 Practice Question: Describe security, compliance, privacy, and trust in Microsoft 365

This MS-900 practice question tests your understanding of describe security, compliance, privacy, and trust in microsoft 365. 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.

Which four of the following are key components of the Microsoft 365 defense-in-depth security strategy? (Choose all that apply. There are four correct answers.)

Question 1mediummulti select

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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

✓

Physical security of datacenters, including biometric access controls and 24/7 monitoring.

The Microsoft 365 defense-in-depth strategy relies on multiple layers of security controls. Physical security of datacenters (biometric access, 24/7 monitoring) is the foundational layer. User identity protection via Azure AD MFA and Conditional Access secures the authentication layer. Data encryption at rest (BitLocker) and in transit (TLS) protects data confidentiality. Advanced Threat Protection (ATP) for email, SharePoint, and Teams defends against malware and phishing at the workload layer. These four components collectively implement a layered security model.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may confuse operational features like versioning or backup with core security layers, or mistakenly believe Microsoft has unrestricted access to customer data, when in fact the shared responsibility model and strict access controls are fundamental to the defense-in-depth strategy.

Detailed technical explanation

How to think about this question

Defense-in-depth in Microsoft 365 is implemented across physical, identity, data, and threat protection layers. Azure AD Conditional Access evaluates signals like user location, device health, and risk level before granting access, enforcing policies such as requiring MFA or blocking access from untrusted networks. Data encryption uses AES-256 for BitLocker at rest and TLS 1.2+ for data in transit, with Microsoft managing keys in Azure Key Vault. ATP (now part of Microsoft Defender for Office 365) uses machine learning models to analyze email headers, URLs, and attachments in real time, with Safe Links and Safe Attachments providing time-of-click protection.

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.

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 MS-900 question test?

Describe security, compliance, privacy, and trust in Microsoft 365 — This question tests Describe security, compliance, privacy, and trust in Microsoft 365 — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Physical security of datacenters, including biometric access controls and 24/7 monitoring. — The Microsoft 365 defense-in-depth strategy relies on multiple layers of security controls. Physical security of datacenters (biometric access, 24/7 monitoring) is the foundational layer. User identity protection via Azure AD MFA and Conditional Access secures the authentication layer. Data encryption at rest (BitLocker) and in transit (TLS) protects data confidentiality. Advanced Threat Protection (ATP) for email, SharePoint, and Teams defends against malware and phishing at the workload layer. These four components collectively implement a layered security model.

What should I do if I get this MS-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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Last reviewed: Jun 11, 2026

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