Characteristics of Copper Cabling
Networks use copper media because it is inexpensive, easy to install and has low resistance to
electrical current. However, copper media is limited by distance and signal interference.
Data is transmitted on copper cables
Most widely used lan technology today.
Operates in the data link layer and the physical layer,
defined in the IEEE 802.2 and 802.3 standerds.
Supports data bandwidths of:
Relies on two seperate layers of the
Properties of Fiber-Optic Cabling
Optical fiber cable transmits data over longer distances and at higher bandwidths than any other networking media. Unlike copper wires, fiber-optic cable can transmit signals with less attenuation and is completely immune
Topology - How the connection between the nodes appears to the data link layer.
Media sharing - How the nodes share the media. The media sharing can be point-to-point, such as in WAN connections, or shared such as in LAN networks.
Types of topologies
MAC constitutes the lower sublayer of the data link layer.
MAC is implemented by hardware, typically in the computer NIC.
The specifics are listed in the IEEE 802.3 standards.
Supports ethernet technology by using CSMA/CD and CSMA/CA