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Chapter 2 (Layers ( application, Presentations, Session, transport,…
Chapter 2
Layers
application
Presentations
Session
transport
Network
Data Link
physical
(NIC) network interface car
which serves as the interface between the pc and the network
The Network must provide a mechanism that gives each system a unique identifier
telephone
mac address
the first six digits,in this example 00-40-05
OSI
sheilded twisted Pair (UTP)
usually contains four pairs of wires that can transmit and receive data