Security+ Exam Prep Question of the Week

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 What layer of the TCP/IP (DARPA or DOD) Model does IPSec operate?

  1. Process (Application)
  2. Link (Network Interface)
  3. Internet (Internetworking)
  4. Host-to-host

The correct answer is3.

The TCP/IP model consists of 4 layers as compared to the OSI model’s seven. The layer where IPSec resides is the Internet or Internetworking layer of the TCP/IP model. This is the corresponding layer to the OSI model’s network layer (layer 3).

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