Which of the following tunneling protocols is not well suited for dial-up?

A.
IPSec

B.
PPTP

C.
PPP

D.
L2TP

Explanation:
IPSec is a tunneling protocol used in LAN-to-LAN VPN solutions where it
can handle multiple connections at the same time. PPTP, PPP, and L2TP are popular
protocols used primarily in dial-up environments.