Computer Science -Network

Star Topology
All of the devices on the network are connected to a single central device. This central device is usually a switch or hub.
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Bus Topology
All the devices on the network are connected to one cable or ‘bus’. This cable transmits all of the network data to every device.
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Ring Topology
All of the devices in the network are connected to two other devices. These connections eventually form a loop.
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WAN (Wide Area Network)
A Wide Area Network is a network which covers a large area - a city or possibly the whole globe. It can be made of LANs which are connected together. The hardware is usually owned by telecoms companies.
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Server
A computer which has been specially dedicated to providing network functions. This could include sending/storing email, running shared applications such as games, or storing multimedia files.
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IP Address
A number given to a device on a network by the router. It is used to identify where data packets should be sent.
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Packets
A small amount of data which is sent through a network. Usually has a lot of extra metadata to let the network hardware know where to send it.
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MAC Address
A unique ID number which is built into the hardware of your computer and can be used to identify it on a network.
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Protocol
A set of rules about how devices on a network should communicate with each other. The most popular is called TCP/IP.
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Network Interface Card
The piece of hardware which allows a computer to connect to a network. These are usually built into modern computers.
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Client-Server
The server stores all of the data/programs for the users of the network. The users connect on devices called clients. The server provides a central control of data, programs, and security.
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Peer-to-peer
Every device on the network is responsible for storing data, applications, and network security.
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Router
Connects one network to another, and knows how to send information through multiple networks to reach a destination. Also gives each device on a network an IP Address.
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Switch
This sends data packets from one device on a network to another. It only sends the data to the device it is meant for.
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WAP (Wireless Access Point)
A Wireless Access Point allows wireless-capable devices to connect to a network without requiring a cable to do so.
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Hub
This sends data packets from one device on a network to another. It sends the data packets to every device connected to it at once.
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Encryption
Modifying the data being sent in such a way that it can only be read by the person who understands how to read it.
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UAL (User Access Levels)
These prevent users from accessing files which they do not have permission to access. They can control whether a user is allowed to view, edit, or share different files.
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Password Protection
Access to the network is limited to those who know the password. This is usually paired with unique user logins.
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LAN (Local Area Network)
A network which only covers a smaller area such as a building or campus. The hardware is typically owned by the organisation which the network covers.
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Other cards in this set

Card 2

Front

All the devices on the network are connected to one cable or ‘bus’. This cable transmits all of the network data to every device.

Back

Bus Topology

Card 3

Front

All of the devices in the network are connected to two other devices. These connections eventually form a loop.

Back

Preview of the back of card 3

Card 4

Front

A Wide Area Network is a network which covers a large area - a city or possibly the whole globe. It can be made of LANs which are connected together. The hardware is usually owned by telecoms companies.

Back

Preview of the back of card 4

Card 5

Front

A computer which has been specially dedicated to providing network functions. This could include sending/storing email, running shared applications such as games, or storing multimedia files.

Back

Preview of the back of card 5
View more cards

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