Wirless radio: Broadcast, "half-duplex" (sender to receiver)

Propagation environment effects:

point-to-point; 45 Mbps

Use as line-of-sight transmission of data signals via atmosphere

Microwaves are radio waves that provide a high-speed signal transmission.

Microwave transmission offers low speed, cost-effectiveness and ease implementation

Satellite transmission is a form of microwave transmission in which a satellite acts as the relay
station

Its basic components are earth stations, which send and receive signals

….. is the satellite components that receive the transmission from an earth.

Light carries data, more than 26,000 times the capacity of twisted pair

High-frequency radio waves, travels in straight line through the air

Microwave relay station in the sky, used by GPS devices

Solid copper core, more than 80 times the capacity of twisted pair

A … is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device

Modem stands for MOdulator/DEModulator

A modem is a device that converts

Most modems are directly connected to phone system by a cable

A wireless modem uses the cell phone network to connect to the Internet wirelessly from a notebook computer, a smart phone, or other mobile device

Hub is intelligent

Hub has less cost

Computer A sends data to the hub and then the hub broadcast the data to all the computers attached to the hub. Computer B then receives the data and other computers ignore the data.