Exam Objectives Fast Track
Understanding the Purpose and Function of Networking Models
☑ The Department of Defense (DoD) model was originally designed to share computer data across a wide area between several large, mainframe computers.
☑ The DoD’s Advanced Research Projects Agency (DARPA) formed an internetworking experiment called ARPANET.
☑ The DoD model used four layers: Network Interface, Internet, Host-to-Host, and Application.
☑ The OSI model is based on the DoD model and has seven defined layers.
☑ The seven layers of the OSI model are Physical, Data Link, Network, Transport, Session, Presentation, Application.
☑ An acronym commonly used to remember the seven layers is All People Seem To Need Data Processing.
☑ Each layer of the OSI model is ...