CCNA 1. Module 5: Cabling LANs & WANs. Media. The basic functions of media are to carry a flow of information, in the form of bits and bytes, through a LAN. Networking media are considered Layer 1 (physical layer) components of LANs.
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Module 5: Cabling LANs & WANs
The principal medium you will study in this class is called Category 5 unshielded twisted-pair cable(CAT 5 UTP).
There are at least 18 varieties of Ethernet, which have been specified, or are in the specification process. Here are some of the most common and important Ethernet technologies.
Advantages over bridges and hubs
100 Base-T Hub