--- Data transmission ---


Define the terms: protocol, data packet.


Teaching Note:


Sample Question:


JSR Notes:


- A general definition of protocol (to help you understand the meaning of the word):

A set of rules/guidelines that help with interaction between individuals or devices (example: if you visit the queen, bowing is part of the protocol).

traffic, and mail

-Networking definition of a protocol:

An agreed upon collection of rules that servers, computers and other devices which transfer data back and forth must follow in order for the transmissions to be successful.


-Data packet (I'll give you two, slightly different approaches to the definition; pick the one you like best, or come up with your own based on these two):

Option 1: Discrete group of bits of a certain length which are sent across a network; they include not only the data "payload", but also important information about the packet to help it get to its destination.

Option 2: A data packet is composed of a header and a payload; the header includes important information required by the protocol for the transfer of the data, and the payload is the data itself - only one of many groups of data being sent which comprise the overall file being sent.

You also have the St. Julian page. But note that this just says "Define". We will do much more to describe packets in 3.1.11, which is about packet switching networks.