A small unit of data
Packet
It contains information about the packet and its destination
Packet header
The location of the device on the internet
IP address
The data
payload
It contains the error detection method used.
Trailer
A method of transmitting data across a network
Packet switching
Computers that are joined together is called
Network
A device that controls where packet is forwarded
Router
Data is sent one bit at a time
Serial
Or a disruption happens when data is transmitted
interference
Data is transmitted using multiple wires
Parallel
Data is transmited in one direction only
Simplex
Data is sent vice-versa (in two directions) but one direction at a time.
Half-duplex
Data is transmitted in both direction at the same time
Full-duplex
