Which of the following provides a framework to enable many types of authentication techniques to be used during PPP connections?

A.
CHAP

B.
PAP

C.
EAP

D.
S-EAP

Explanation:
Extensible Authentication Protocol (EAP) is not a specific
authentication mechanism as are PAP and CHAP. Instead, it provides a framework to
enable many types of authentication techniques to be used during PPP connections. It
extends the authentication possibilities from the norm (PAP and CHAP) to other
methods such as one-time passwords, token cards, biometrics, Kerberos, and future
mechanisms.