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Describe the capabilities of Microsoft EntramediumMultiple ChoiceObjective-mapped

SC-900 Describe the capabilities of Microsoft Entra Practice Question

A company uses Microsoft Entra ID. The IT team wants to provide remote employees with secure, single sign-on (SSO) access to a critical on-premises web application that uses password-based authentication, without requiring a VPN connection. Which Microsoft Entra ID feature should they use?

⚠ Common exam trap

Test-takers frequently confuse Microsoft Entra Connect (a sync tool) with Application Proxy, mistakenly thinking that syncing identities alone provides remote access and SSO to on-premises apps.

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

Microsoft Entra Application Proxy

Microsoft Entra Application Proxy enables secure remote access to on-premises web applications by publishing them through an external endpoint, without requiring a VPN. It supports password-based SSO by securely storing and replaying credentials to the legacy application, allowing users to authenticate once via Entra ID. This makes it the correct choice for providing SSO to a password-based on-premises app without a VPN.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • Microsoft Entra Application Proxy

    Why this is correct

    Microsoft Entra Application Proxy enables secure remote access to on-premises web applications from any device, without requiring a VPN or opening inbound firewall ports. It works by deploying a lightweight connector within the private network that establishes an outbound connection to the Microsoft Entra service. This allows users to access internal applications using their Microsoft Entra ID credentials, benefiting from single sign-on and Microsoft Entra's robust security features like Conditional Access.

  • Microsoft Entra Connect

    Why it's wrong here

    Microsoft Entra Connect is a crucial tool for hybrid identity, responsible for synchronizing user, group, and contact identities from an on-premises Active Directory to Microsoft Entra ID. It ensures that identities are consistent across both environments, enabling single sign-on for cloud applications. While essential for identity management, it does not provide proxying capabilities for remote access to on-premises applications.

    When this WOULD be correct

    A company wants to synchronize user accounts and passwords from an on-premises Active Directory to Microsoft Entra ID to enable cloud-based authentication and management. The question would ask: 'Which tool should they use to sync on-premises identities to the cloud?'

  • Microsoft Entra Domain Services

    Why it's wrong here

    Microsoft Entra Domain Services provides managed domain services, such as domain join, group policy, LDAP, and Kerberos/NTLM authentication, directly within Azure. It is designed to support cloud-based virtual machines and applications that require traditional Active Directory features, without needing to deploy and manage domain controllers yourself. However, it does not facilitate secure remote access to applications hosted on *on-premises* infrastructure.

    When this WOULD be correct

    A company needs to lift-and-shift on-premises applications to Azure without re-architecting, and requires domain-joined VMs with managed domain services like Group Policy. Entra Domain Services would be correct for providing AD DS compatibility in Azure.

  • Microsoft Entra ID P2 license

    Why it's wrong here

    A Microsoft Entra ID P2 license is a subscription tier that unlocks advanced identity and access management capabilities within Microsoft Entra ID. These features include Microsoft Entra Identity Protection for risk detection, Privileged Identity Management (PIM) for just-in-time access, and advanced Conditional Access policies. It is a licensing plan that grants access to specific features, rather than a service or component that directly provides remote application access.

    When this WOULD be correct

    A question that asks which license is required to use Microsoft Entra ID Protection, Identity Governance (e.g., Privileged Identity Management), or Conditional Access policies with risk-based conditions. For example: 'Which license is needed to implement risk-based Conditional Access policies?'

Option-by-option analysis

Why each answer is right or wrong

Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The SC-900 exam frequently reuses these exact scenarios with slightly different constraints.

Microsoft Entra Application ProxyCorrect answer

Why this is correct

Microsoft Entra Application Proxy enables secure remote access to on-premises web applications from any device, without requiring a VPN or opening inbound firewall ports. It works by deploying a lightweight connector within the private network that establishes an outbound connection to the Microsoft Entra service. This allows users to access internal applications using their Microsoft Entra ID credentials, benefiting from single sign-on and Microsoft Entra's robust security features like Conditional Access.

Microsoft Entra ConnectWrong answer — click to see why

Why this is wrong here

Microsoft Entra Connect is used for synchronizing on-premises directories with Entra ID, not for proxying access to on-premises web applications. It does not provide SSO or eliminate the need for a VPN.

★ When this WOULD be the correct answer

A company wants to synchronize user accounts and passwords from an on-premises Active Directory to Microsoft Entra ID to enable cloud-based authentication and management. The question would ask: 'Which tool should they use to sync on-premises identities to the cloud?'

Why candidates choose this

Candidates may confuse Entra Connect with Application Proxy because both involve on-premises integration, and 'Connect' sounds like it provides connectivity for remote access.

Microsoft Entra Domain ServicesWrong answer — click to see why

Why this is wrong here

Microsoft Entra Domain Services provides managed domain services like domain join and LDAP, not secure remote access to on-premises web apps without VPN. The question requires a reverse proxy solution for password-based SSO, which is Application Proxy's role.

★ When this WOULD be the correct answer

A company needs to lift-and-shift on-premises applications to Azure without re-architecting, and requires domain-joined VMs with managed domain services like Group Policy. Entra Domain Services would be correct for providing AD DS compatibility in Azure.

Why candidates choose this

Candidates may confuse 'Domain Services' with providing access to on-premises resources, or think that domain services are needed for authentication to on-premises apps, not realizing Application Proxy handles this without domain join.

Microsoft Entra ID P2 licenseWrong answer — click to see why

Why this is wrong here

The question asks for a specific feature to provide SSO access to an on-premises web app without VPN. A Microsoft Entra ID P2 license is a licensing tier, not a feature; it does not directly enable SSO or remote access to on-premises apps.

★ When this WOULD be the correct answer

A question that asks which license is required to use Microsoft Entra ID Protection, Identity Governance (e.g., Privileged Identity Management), or Conditional Access policies with risk-based conditions. For example: 'Which license is needed to implement risk-based Conditional Access policies?'

Why candidates choose this

Candidates may think that a higher license tier (P2) is necessary for any advanced security feature, including Application Proxy, or they confuse licensing requirements with functional capabilities.

Analysis generated from the official SC-900blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”

About these practice questions

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This SC-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SC-900 exam.