Transfer of data in ICT systems

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What is an ICT network?
Networks link 2 or more computing devices and transmission media together for the purpose of sharing data, software and peripherals
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What is an intranet?
An Intranet is a private network within a company and it is only available to staff or members of the organisation.
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What is an extranet?
A part of an organisation's network that can be made available to outside users
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What is a peer to peer network?
A peer-to-peer network can use all the computers in a network, connected to it as workstations, and so it is cheaper than a client-server network.
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What is a hub?
A network device that allows multiple users to communicate. Inexpensive
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When is a hub used?
When more than 2 computers need to be connected
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What is a client-server network?
In bigger organisations, servers are used for people to access resources required to their job. In this type of network, the server is connected to a network switch that joins multiple computers together at the data link network protocol layer.
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What are the advantages of client-server networks?
Can be managed and backed up centrally and it is easier to concentrate resources such as security and maintenance on one main computer.
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What is a network switch?
A hardware device that joins multiple computers together at the data link network protocol layer. Can inspect data packets and forward them to the connected device they are intended for
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Define the internet
A large group of interconnected computers around the world that allow the sending and retrieval of information from one computer to another.
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What is the World Wide Web?
a collection of multimedia resources accessible via the Internet. Made up of websites and webpages
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How are internet files accessed?
Web browser software and HTTP (Hyper Text Transfer Protocol)
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Define de facto standards
No formal agreement, law or provision put in place for a particular hardware or software, but is the one that has become common practice to use
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Give examples of de facto standards
GIF format for images on the web, the use of Windows OS in some businesses
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Define de jure standards
Legally binding industry standard that all manufacturers must adhere to.
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Give an example of a de jure standard
WiFi developed by the Institute of Electrical and Electronic Engineers (IEEE)
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What is the advantage of de jure standards?
Minimises compatibility issues
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What is a router?
A hardware device that joins networks together at the network protocol layer
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Which protocols manage the flow of data over the internet?
Transmission Control Protocol (TCP) and Internet Protocol (IP)
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What is File Transfer Protocol?
Allows users to send files between computers. A copy of the file is transferred to the receiving computer and can be saved and its data read
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What is Post Office Protocol 3?
Protocol that defines the transfer of e-mail between computer systems
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What is Secure Sockets Layer (SSL)?
Cryptographic for sending data, such as credit card details, securely over the internet
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Other cards in this set

Card 2

Front

What is an intranet?

Back

An Intranet is a private network within a company and it is only available to staff or members of the organisation.

Card 3

Front

What is an extranet?

Back

Preview of the front of card 3

Card 4

Front

What is a peer to peer network?

Back

Preview of the front of card 4

Card 5

Front

What is a hub?

Back

Preview of the front of card 5
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