What two protocols below are Data Link Layer protocols designed to connect WAN endpoints in a direct connection,such as when a client computer connects to a server at an ISP using a dial-up or DSL connectionand modem?
A)OpenVPN
B)SLIP
C)PPTP
D)PPP

Question

Quizplus · Accepted Answer

SLIP (Serial Line Internet Protocol) and PPP (Point-to-Point Protocol) are both Data Link Layer protocols designed to connect WAN endpoints in a direct connection, typically using a dial-up or DSL connection and a modem. OpenVPN and PPTP are both Tunneling protocols that operate at the Network Layer and are used to create a virtual private network (VPN) over a public network.

What Two Protocols Below Are Data Link Layer Protocols Designed