Networks
Computer Science: KS3, topic 5.1.1
Parts of Networks
A computer network is a group of computers and other devices connected together so that they can communicate and share resources.
Types of connection
There are two main types of connection:
Wired connections use physical cables to connect devices. Ethernet cables are commonly used to connect computers to a network.
Wireless connections do not use physical cables. They use radio waves to transmit data through the air. Wi-Fi and Bluetooth are examples of wireless connections.
The internet as a network
- Any device which accesses the Internet becomes part of a network.
Networks of computers
- Networks are often but do not have to be, part of the Internet.
- Computers on a network can share devices such as printers.
Nodes and hubs
- Each computer on the network is called a node.
- Different parts of the network are sometimes connected in one place - the hub.
The network server
- Resources and programs can be stored or run on a special computer - the network server.
Test yourself on Networks
What name describes where several computers are connected together?
What is the name for the special computer that stores and runs resources and programs?