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Definition of Network
- A network is a collection of computers and devices connected together via communication devices and transmission media allowing computers to share resources.

Definition of Transmission media
-Transmission media is the type of physical system used to carry a communication signal from one system to another.

Definition of Communication device
- Communication device is hardware component that enables a computer to send (transmit) and receive data, instructions, and information to and form one or more computers.

Communication device Transmission media

- Modem





- Router



- Switch
  • Wired Transmission Media

1- Twisted-pair cable


2- Coaxial Cable

 3- Fiber-Optic Cable

- Wireless Access Point




- Hub



- Network Interface Cards / Network Card
  • Wireless Transmission Media
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