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Understanding Layer 2, 3, and 4 Protocols - pearsoncmg.com
ptgmedia.pearsoncmg.comChapter 2 U NDERSTANDING L AYER 2, 3, AND 4 P ROTOCOLS network types, such as Ethernet, Frame Relay, and ATM. Figure 2–1 shows the OSI Seven Layer Model. When we talk about Layer 2 and Layer 3 networking, it is these layers that we’re referring to, and logically the further up the OSI model we move, the
Understanding Layer 2, 3, and 4 Protocols - pearsoncmg.com
ptgmedia.pearsoncmg.com14 Chapter 2 U NDERSTANDING L AYER 2, 3, AND 4 P ROTOCOLS network types, such as Ethernet, Frame Relay, and ATM. Figure 2–1 shows the OSI Seven Layer Model.