Which of the following authentication protocols provides support for a wide range of authentication
methods, such as smart cards and certificates?

A.
PAP

B.
EAP

C.
MS-CHAP v2

D.
CHAP

Explanation:
Extensible Authentication Protocol (EAP) is an authentication protocol that provides support for a
wide range of authentication methods, such as smart cards, certificates, one-time passwords, public
keys, etc. It is an extension to Point-to-Point Protocol (PPP), which allows the application of arbitrary
authentication mechanisms for the validation of a PPP connection.
Answer option C is incorrect. Microsoft created the Microsoft Challenge Handshake Authentication
Protocol (MS-CHAP) to authenticate remote Windows workstations. It is designed especially for
Windows 95, Windows 98, Windows NT, and Windows 2000 networking products. This protocol
provides data encryption along with password encryption.
Answer option A is incorrect. Password Authentication Protocol (PAP) is the least sophisticated
authentication protocol, used mostly when a client calls a server running an operating system other
than Windows. PAP uses plain text passwords.
Answer option D is incorrect. Challenge Handshake Authentication Protocol (CHAP) is an
authentication protocol that uses a secure form of encrypted authentication. Using CHAP, network
dial-up connections are able to securely connect to almost all PPP servers.

“http.//en.wikipedia.org/wiki/Extensible_Authentication_Protocol”