Microsoft Updated SC-900 Exam Questions and Answers by chase

 Enabling multi-factor authentication (MFA) increases the Microsoft Secure Score. Yes

 A higher Microsoft Secure Score means a lower identified risk level in the Microsoft 365 tenant. Yes

 Microsoft Secure Score measures progress in completing actions based on controls that include key regulations and standards for data protection and governance. No

Microsoft Secure Score is a measurement of an organization’s security posture in Microsoft 365. The SCI materials explain that Secure Score is calculated from improvement actions such as requiring multi-factor authentication for users, especially administrators. When you configure and enforce MFA, you complete one of these recommended actions, and Secure Score awards points, so enabling MFA directly increases Microsoft Secure Score.

The documentation further states that Secure Score reflects how many recommended security controls you have implemented. A higher score indicates that more recommended controls are in place, which reduces exposure to common threats and therefore represents a lower residual risk level in the tenant. While it is not an absolute guarantee of security, it is an indicator that risk has been reduced compared to a lower score.

The third statement, however, describes the purpose of Microsoft Purview Compliance Manager and its compliance score, which tracks progress against controls mapped to regulations and standards for data protection and governance. Secure Score does not measure alignment with regulatory frameworks; it is focused on technical security configurations and behaviors in Microsoft 365. Therefore, that statement is No.

authorization

In the context of Microsoft identity and access management, when users attempt to access an application or a service, authorization is what controls their level of access. This concept is clearly defined in Microsoft’s Security, Compliance, and Identity (SCI) learning paths, particularly in SC-900 and SC-300 certifications.

From Microsoft SCI training materials:

“Authentication is the process of verifying the identity of a user, while authorization is the process of determining what resources a user can access and what actions they are permitted to perform.”

In more detail:

Authentication confirms who you are (e.g., verifying credentials through Azure AD, MFA).

Authorization decides what you can do (e.g., access to files, roles, permissions in an app or service).

SCI documentation explains:

“Once authentication is successful, authorization policies are applied to determine whether the authenticated user is allowed to access the requested resource and at what level.”

This principle is implemented using role-based access control (RBAC) in Microsoft Azure and Microsoft 365 environments. For example, even if a user successfully logs into the Microsoft 365 portal (authentication), their ability to manage Exchange Online settings or view compliance data depends on their assigned roles (authorization).

A Security Information and Event Management (SIEM) system is designed to collect and aggregate security data from multiple sources—such as servers, devices, applications, and security appliances—across an organization. It then analyzes the data for anomalies, correlations, and patterns that could indicate potential threats or breaches.

From the SCI certification learning paths, especially SC-200 (Microsoft Security Operations Analyst), Microsoft defines SIEM as follows:

“SIEM tools collect and analyze activity from multiple resources across your IT infrastructure. Microsoft Sentinel is Microsoft’s cloud-native SIEM that provides intelligent security analytics and threat intelligence to help detect and respond to security threats.”

A SIEM system:

Ingests large volumes of data (logs, events).

Uses built-in rules, AI, and analytics to identify threats.

Correlates alerts from various sources to form incidents.

Generates alerts and dashboards for security analysts.

Microsoft Sentinel, as Microsoft’s SIEM solution, embodies all of these capabilities.

Other options in the dropdown (incorrect for this context):

SOAR is focused on automating responses after SIEM alerts.

TAXII is a threat intel transport protocol, not a detection system.

ASR (Attack Surface Reduction) refers to endpoint hardening, not centralized event analysis.

✅ Therefore, the correct and Microsoft-verified term is: A security information and event management (SIEM).