Which VPN protocol is an extension of PPP and encapsulates information?

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Multiple Choice

Which VPN protocol is an extension of PPP and encapsulates information?

Explanation:
PPTP is designed to extend PPP by carrying PPP frames inside a GRE tunnel, which allows a PPP-based session to be tunneled over an IP network as a VPN. This encapsulation of PPP data within GRE is what makes it the best fit for “an extension of PPP and encapsulates information.” SSH is not a VPN protocol, IPSec operates at the IP layer to secure packets rather than encapsulating PPP frames, and L2TP can transport PPP but is a general Layer 2 tunneling protocol rather than PPP’s direct extension.

PPTP is designed to extend PPP by carrying PPP frames inside a GRE tunnel, which allows a PPP-based session to be tunneled over an IP network as a VPN. This encapsulation of PPP data within GRE is what makes it the best fit for “an extension of PPP and encapsulates information.” SSH is not a VPN protocol, IPSec operates at the IP layer to secure packets rather than encapsulating PPP frames, and L2TP can transport PPP but is a general Layer 2 tunneling protocol rather than PPP’s direct extension.

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