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N10-005 · Question #80

Which of the following protocols works at the LOWEST layer of the OSI model?

The correct answer is A. L2TP. Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private network (VPN) over the Internet.

Networking concepts

Question

Which of the following protocols works at the LOWEST layer of the OSI model?

Options

  • AL2TP
  • BPPTP
  • CISAKMP
  • DIPSec

How the community answered

(58 responses)
  • A
    95% (55)
  • C
    2% (1)
  • D
    3% (2)

Explanation

Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private network (VPN) over the Internet.

Topics

#OSI model#L2TP#VPN protocols#data link layer

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