Computer networks for dummies

Basic network book

A computer network is a group of interconnected nodes or computing devices that exchange data and resources with each other.
A network connection between these devices can be established using cable or wireless media..

Basic network book

Advantages of computer networking
File sharing - you can easily share data between different users, or access it remotely if you keep it on other connected devices.
Resource sharing - using network-connected peripheral devices like printers, scanners and copiers, or sharing software between multiple users, saves money..

Basic network book

How do they work? Computer networks connect nodes like computers, routers, and switches using cables, fiber optics, or wireless signals.
These connections allow devices in a network to communicate and share information and resources.
Networks follow protocols, which define how communications are sent and received..

What is a computer network in simple terms?

A computer network is a system that connects two or more computing devices for transmitting and sharing information.
Computing devices include everything from a mobile phone to a server.
These devices are connected using physical wires such as fiber optics, but they can also be wireless..

Learning objectives

1. List the different network protocols and network standards
2. List the different network types and topologies
3. List the different types of network devices used in a network
4. Describe network communication principles like TCP/IP, DNS, and ports