WHAT IS NETWORK?
ABOUT NETWORK A network is a collection of computers and devices connected together via communications devices and transmission media . COMMUNICATION DEVICES & 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. TYPE OF COMMUNICATION DEVICES ↠ dial-up modem ↠ digital modem ↠ wireless modem ↠ network card ↠ wireless access point ↠ router ↠ switch ↠ hub WHAT IS TRANSMISSION MEDIA? Materials or substances capable of carrying one or more signals in a communications channel. 1. Physical transmission media/Guided media/Wired •Twisted-Pair Cable, Coaxial Cable, Fiber-Optic Cable. 2 . Wireless transmission media/Unguided media/ Wireless •Infrared, Broadcast Radio, Cellular Radio, Microwave, communications satellite.