ICT Revision Theory GCSE 1

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  • Created by: IJM22
  • Created on: 18-04-19 20:40
What is a network?
Two or more computers, or other electronic devices, connected together so that they can exchange data
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What are the disadvantages of using networks
1. The computer is vulnerable to hackers 2. easily be attacked by a virus
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Which two ways are computers connected in a network?
Servers and clients
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What are servers?
Special, powerful computers that provide ‘services’ to the client computers on the network.
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What are clients?
Normal computers that people sit at to get their work done.
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What does LAN stand for?
Local Area Network
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What is LAN?
Network confined to one building or site.
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What is a wireless LAN
A LAN that uses radio signals to connect computers instead of cables.
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What is at the centre of a LAN?
A wireless switch or router
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What does WAN stand for?
Wide Area Network
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What is a WAN?
A network that extends over a large area
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How is a WAN created?
By joining several LANs together
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What is bluetooth?
A wireless networking technology designed for very short-range connections
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Any computer that needs to be connected to a network must have what?
A Network Interface Card (NIC)
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What is a hub?
A device that connects a number of computers together to make a LAN
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What is a switch?
A device that connects a number of computers together to make a LAN
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What is a router?
A network device that connects together two or more networks
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What is a proxy server?
Acomputer setup to share a resource, usually an Internet connection
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What is a bridge?
A network device that typically links together two different parts of a LAN
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What is a firewall?
A device, or a piece of software that is placed between your computer and the rest of the network
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What is the purpose of a firewall?
To block unauthorised connections being made to your computer or LAN
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Why are modems required?
As modem converts from digital to analogue and from analogue to digital.
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What is a intranet?
Name given to a private network
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What is a microprocessor?
A small CPU built into a single 'chip'
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Give 3 examples of microprocessor-controlled devices?
1.Games consoles 2. DVD players 3. MP3 players
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What is Phishing?
The sending of fraudulent e-mails that attempt to trick people into revealing details about their bank accounts, or other online accounts
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What is spam?
The name given to unsolicited e-mails (ones sent without being asked for).
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Other cards in this set

Card 2

Front

What are the disadvantages of using networks

Back

1. The computer is vulnerable to hackers 2. easily be attacked by a virus

Card 3

Front

Which two ways are computers connected in a network?

Back

Preview of the front of card 3

Card 4

Front

What are servers?

Back

Preview of the front of card 4

Card 5

Front

What are clients?

Back

Preview of the front of card 5
View more cards

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