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SSCP Practice Question: Which two components are integral to a Kerberos…
Which two components are integral to a Kerberos authentication system? (Select TWO)
⚠ Common exam trap
The trap here is that candidates often select 'Authentication Server (AS)' as a separate component, not realizing it is a subcomponent of the KDC, and thus fail to recognize that the KDC and TGT are the two integral components tested.
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
✓
Key Distribution Center (KDC)
The Key Distribution Center (KDC) is the core component of a Kerberos authentication system, responsible for issuing tickets and managing session keys. The Ticket Granting Ticket (TGT) is a temporary credential obtained from the Authentication Server (AS) within the KDC, used to request service tickets without re-entering credentials. Both are integral to the Kerberos protocol (RFC 4120) for secure, ticket-based authentication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Authentication Server (AS)
Why it's wrong here
While the AS is a component of the KDC, it is not as distinct as the KDC itself or the TGT when asking for 'integral components'.
- ✓
Key Distribution Center (KDC)
Why this is correct
The KDC is the central component that authenticates users and issues tickets.
- ✓
Ticket Granting Ticket (TGT)
Why this is correct
The TGT is a token that allows users to request service tickets without re-authentication.
- ✗
Certificate Authority (CA)
Why it's wrong here
CAs are used in Public Key Infrastructure (PKI), not in Kerberos directly.
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Security Assertion Markup Language (SAML)
Why it's wrong here
SAML is used for federated identity and single sign-on in web environments, not native to Kerberos.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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