Which of the following protocols is used by VPN for tunneling?

You work as a Network Administrator for Blue Bell Inc. The company has a TCP-based network. The
company has two offices in different cities. The company wants to connect the two offices by using a
public network. You decide to configure a virtual private network (VPN) between the offices. Which
of the following protocols is used by VPN for tunneling?

A.
L2TP

B.
HTTPS

C.
SSL

D.
IPSec

Explanation:
VPN uses L2TP for tunneling. Layer 2 Tunneling Protocol (L2TP) provides tunneling,
address assignment, and authentication. L2TP allows

transfer of Point-to-Point Protocol (PPP) traffic between different networks. L2TP combines with
IPSec to provide both tunneling and security
for Internet Protocol (IP), Internetwork Packet Exchange (IPX), and other protocol packets across IP
networks. It is a more secure version of
Point-to-Point Tunneling Protocol (PPTP).