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CAS-004 Practice Question: A small business uses an on-premises Active…
A small business uses an on-premises Active Directory for user authentication. They want to enable employees to use their corporate credentials to access a SaaS application that supports SAML 2.0. The security administrator needs to set up a federation between the on-premises AD and the SaaS provider. Which of the following components must be deployed on-premises to act as a bridge between AD and the SAML identity provider?
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
✓
Active Directory Federation Services (AD FS)
Active Directory Federation Services (AD FS) is Microsoft's solution for federated identity and can act as the SAML IdP, integrating with AD.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RADIUS server
Why it's wrong here
RADIUS is for network access, not SAML federation.
- ✓
Active Directory Federation Services (AD FS)
Why this is correct
AD FS is a SAML 2.0 IdP that authenticates against AD.
- ✗
Kerberos key distribution center (KDC)
Why it's wrong here
KDC issues Kerberos tickets, not SAML assertions.
- ✗
Azure AD Connect
Why it's wrong here
Azure AD Connect syncs to cloud, but doesn't provide SAML IdP functionality on-prem only.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.