CompTIA
CAS-001 · Question #182
CAS-001 Question #182: Real Exam Question with Answer & Explanation
The correct answer is D: Kerberos. Kerberos is a network authentication protocol that uses time-limited tickets issued by a trusted Key Distribution Center (KDC) to authenticate users to services.
Question
Which of the following authentication types is used primarily to authenticate users through the use of tickets?
Options
- ALDAP
- BRADIUS
- CTACACS+
- DKerberos
Explanation
Kerberos is a network authentication protocol that uses time-limited tickets issued by a trusted Key Distribution Center (KDC) to authenticate users to services.
Common mistakes.
- A. LDAP is a directory access protocol used to query and modify directory services, not a ticket-based authentication system.
- B. RADIUS is an AAA protocol that authenticates via a challenge-response mechanism using shared secrets, not tickets.
- C. TACACS+ is a Cisco-proprietary AAA protocol that separates authentication, authorization, and accounting using TCP, but does not use a ticket-based model.
Concept tested. Kerberos ticket-based authentication protocol
Reference. https://learn.microsoft.com/en-us/windows-server/security/kerberos/kerberos-authentication-overview
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