Page 29 - Knowledge Organiser Yr8 24-25

Knowledge Base: Computing Networks Year 8 | Spring Term
1. Computer networks and protocols
1.1
What is a computer network?
When two or more computers are connected together to communicate.
1.2
message transmissions: email
How the message is sent to the other email system
1.3
protocols
A set of rules or procedures for transmitting data between electronic devices, such as computers.
4. The Internet and Services
4.1
the internet
A vast network of computers all connected together
4.2
IP addresses
A unique string of characters that identifies each computer using the Internet Protocol to communicate over a network.
4.3
(TCP) transmission control protocol
Splits the messages sent across the internet into smaller pieces called ‘packets’. Assembles the packets in the correct order at the receiver end.
4.5
(IP) internet protocol
A protocol to route the packets. Each device on the internet has an IP address that uniquely identifies it from all other devices
4.6
world wide web
The websites, web pages, and links found on the internet.
4.7
voice over internet protocol (VoIP)
Voice data to be sent in packets over the internet.
4.8
The Internet of Things (IoT)
Means taking everyday ‘things’ and connecting them to the internet.
2. Networking and Hardware
2.1 network cable
2.2 hub
2.3 server
2.4 router
3.2 stand alone computer
Used to connect one network device to another. Connects a number of computers together.
A powerful computer which provides a service. Forwards messages from one network to another.
A computer not connected to a network.
3. Wired and Wireless Network
3.1
local area network (LAN)
Computers or devices are connected together over a small geographical area, such as within a home, a building or one site.
5. WWW
5.1
web browser
A piece of software (code) used to view information on the World Wide Web.
5.2
web server
A server located on the internet that holds website web pages.
5.3
web page
A document that is accessible through the internet on a web browser.
3.3
wide area network (WAN)
Computers or devices are connected together over a large geographical area.
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