Structure of a data packet

A small piece of data that is broken down so that the data transmission can be accommodated properly.

There are three sections in each packet of data:

1. Packet header
2. Payload
3. Trailer

Packet header is contains some important information about the data, they are:

- Destination address
- Packet number
- Originator address

Payload is the actual data that is sending.

Trailer known as the footer, this contains two main pieces of information:

1. Marker to indicate it is the end of the packet
2. Data for any error detection systems that are being used.