Pass Using SC-900 Exam Dumps

Microsoft Defender for Identity (formerly Azure ATP) is designed to protect on-premises identity infrastructures by analyzing signals from Active Directory Domain Services (AD DS). In Microsoft’s SCI guidance, Defender for Identity is described as a “cloud service that uses sensors installed on your domain controllers to monitor and analyze user activities and information across your on-premises Active Directory.” The sensors “collect authentication, replication, and other security-relevant events and network traffic,” enabling analytics to detect techniques such as Pass-the-Hash, Pass-the-Ticket, Golden Ticket, reconnaissance, lateral movement, and domain dominance. The product’s purpose is to surface advanced threats, compromised identities, and malicious insider actions by continuously profiling and learning from AD DS behavior and security events.

While Defender for Identity integrates with other Microsoft security solutions (for example, Microsoft 365 Defender and Microsoft Defender for Cloud Apps) to enrich investigations, it does not rely on Azure Active Directory (Microsoft Entra ID) signals for its core detections, nor does it collect telemetry from Azure AD Connect itself. Instead, its foundational telemetry source is on-premises AD DS domain controllers via lightweight sensors, which provide the deep authentication and directory-service context required to identify sophisticated identity-based attacks in hybrid environments.

Microsoft’s security and compliance learning content explains that digital signatures are built on public key (asymmetric) cryptography. In this model, each identity has a key pair: a private key that is kept secret and a public key that can be shared. The signing operation is performed with the private key to produce a signature bound to the content and the signer’s identity. Verification is then performed by anyone who has access to the corresponding public key, which mathematically validates the signature and confirms both integrity (the content wasn’t altered) and authenticity (it was signed by the holder of the private key). SCI materials (covering Microsoft Purview Information Protection, Azure Key Vault/PKI concepts, and identity fundamentals) emphasize that the private key must never be disclosed or required for verification; only the public key is used to validate signatures and certificates. This is the same principle used across Microsoft 365 for certificate-based trust, code signing, and document signing: sign with the private key; verify with the public key. Therefore, statements one and two are true, and the statement claiming verification requires the private key is false.

In Microsoft’s Security, Compliance, and Identity (SCI) learning content, Multi-Factor Authentication (MFA) is defined as requiring more than one verification method during sign-in. Microsoft states: “Multi-factor authentication (MFA) requires two or more verification methods” and Azure AD (Microsoft Entra ID) MFA “works by requiring two or more of the following: something you know (password), something you have (trusted device or token), something you are (biometrics).” The SCI fundamentals also explain that MFA strengthens authentication beyond a single password by combining distinct factor types, noting that “strong authentication uses at least two different factors to verify identity.”

When you enable Azure AD MFA, a user must successfully present two factors from those categories to complete the authentication—commonly a password (something you know) plus a second factor such as Microsoft Authenticator approval, a FIDO2 security key, SMS/voice code, or Windows Hello (something you have/are). This is the core of Azure AD’s risk-based and conditional access controls, which can require MFA based on conditions or risk signals. Therefore, the number of factors required after enabling Azure AD MFA is two, aligning with Microsoft’s definition and implementation of multi-factor authentication in Entra ID.