Networks & Network Security
Several more definitions:
- [Another definition of network:] A set of devices/computers connected via links (such as wires, optical fibers, or radio channels) and switches (devices connecting links and forwarding data over to specific devices, e.g., routers.)
- An internet is a network of networks.
- Q: How do we distinguish between a network and an internet?
A: Data that are sent over a network are addressed to "device X", while data sent over an internet are addressed to "device X on network Y".
- An intranet is a private network to which only users within an organization can access.
- The Internet (note the capital letter 'I') is the largest internet in the World.
- The World Wide Web (WWW) is the collection of all the pages and data that can be publically accessed via and over the Internet.