About Computer Network What is Network A network is a collection of computers and devices connected together via communications devices and transmission media . Basic Concept of Network Usually, the connections between computers in a network are made using physical wires or cables. However, some connections are wireless, using radio waves or infrared signals. Communication Device&Transmission Media WHAT IS communication devices? A communications device is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device. TYPES OF COMMUNICATION DEVICES WHAT IS transmission media? Materials or substances capable of carrying one or more signals in a communications channel. Two types of transmission media: 1.Physical transmission media/Guided media/Wired •Twisted-Pair Cable, Coaxial Cable, Fiber-Optic Cable. 2.Wireless transmission media/Unguided media/ Wireless