From the options, which is a tunneling protocol that can only work on IP networks because it
requires IP connectivity?
A.
PPTP protocol
B.
SSH
C.
IPX protocol
D.
L2TP protocol
Explanation:
Point-to-Point Tunneling Protocol
You can access a private network through the Internet or other public network by using a virtual
private network (VPN) connection with the Point-to-Point Tunneling Protocol (PPTP).
Developed as an extension of the Point-to-Point Protocol (PPP), PPTP tunnels and/or
encapsulates, IP, IPX, or NetBEUI protocols inside of PPP datagrams
PPTP does not require a dial-up connection. It does, however, require IP connectivity between
your computer and the server.
Not B: L2TP is an industry-standard Internet tunneling protocol with roughly the same functionality
as the Point-to-Point Tunneling Protocol (PPTP). Like PPTP, L2TP encapsulates Point-to-Point
Protocol (PPP) frames, which in turn encapsulate IP, IPX, or NetBEUI protocols