Question

Works at Layer 2 of the OSI model. Offers the ability to encrypt and authenticate. Uses EAP and/or CHAP to authenticate. Uses Microsoft Point to Point Encryption (MPPE) for encryption. (MPPE is a derived version of DES). ONLY works over standard IP Networks.

A) PPP
B) L2TP
C) IPSec
D) PPTP

Answer 1

PPTP is the protocol that works at Layer 2 of the OSI model, offering encryption and authentication using EAP and/or CHAP for authentication and MPPE for encryption.

Step-by-step explanation:

The subject of this question is about networking technologies at Layer 2 of the OSI model.

Out of the given options, the correct answer is PPTP (Point-to-Point Tunneling Protocol). PPTP is a network protocol that operates at Layer 2 and provides the ability to encrypt and authenticate data transmitted over standard IP networks.

PPTP uses EAP (Extensible Authentication Protocol) and/or CHAP (Challenge-Handshake Authentication Protocol) for authentication, and Microsoft Point-to-Point Encryption (MPPE) for encryption, which is a derived version of DES (Data Encryption Standard).