Is a collection of computers and devices that connected together via communication devices and transmission media

Any type of hardware capable of transmitting data,instruction and information between a sending device and a receiving device.

Converts digital signals to analog signals,so that data can travel along phone line

That send and receives data and information frkm a digital line

Uses a mobile service provider's network to connect to the internet wirelessly from a computer or mobile device.

Enables a computer or device that does not have built in networking capability tk access a network.

Central communications device that allows computers and devices to transfer data wirelessly among themselves or to a wired network.

Connects multiple computers or other routers and transmit data to its correct destination on a network.

That provides central point for cables in a network.

Material and substances capable of carrying one or more communications signals

For network cabling and telephone systems.

Can be cabled over longer distances than twisted pair cable.

-More secure
-Fast transfer data

Use wire , cable and other tangible materials to send communication signals.

Use air or space to send communication signal.

Distributes radio signals through air over long distances and short distances

-Used widely for mobile communications
-uses high-frequency radio waves to transmit voice and digital data messages.

-provide high speed signal transmission
-can transmit data faster than a dial up modem.

-space station that receives microwave signals from an earth based station
-broadcast the signals back over a wide area.