AQA AS Computing - Unit 2 - Structure of the internet.

Basic flash cards reviewing the whole of Unit 2.

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Internet
A public network of computer network and computers using unique IP address and TCP/IP.
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Intranet
A private computer network used to share information or operations or transfer data within an organisation.
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Gateway
Connects networks that use different Link Layer Protocols.
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Router
Connects networks that use the same Link Layer Protocol.
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IP Address
A unique address that identifies a computer of another electronic device on a network.
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World Wide Web (WWW)
A system of interlinked hypertext documents accessed via the internet, also called the Web.
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Domain Name
A name that identifies one or more IP address, e.g. 'microsoft.com' represents several IP addresses.
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Fully Qualified Domain Name (FQDN)
It consists of a host ID and domain name.
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DNS Server
A server that translates FQDNs into IP addresses.
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Uniform Resource Locator (URL)
A URI that identifies a resource by its network location.
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Uniform Resource Identifier (URI)
Specifies how to access a resource on the internet.
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Server
A software process that provides a service requested by a client.
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Client
A software process that requests and uses the services provided by a server.
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Client-Server Model
A client software process initiates a request for a service from a server software process, and the server responds to that request.
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Protocol
A set of agreed signals, codes and rules for data exchange between systems.
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Protocol Stack
A collection of Protocol layers; each layer is responsible for part of the process governed by the stack.
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TCP/IP Protocol Stack
A Protocol Stack for TCP/IP; it has an application later, a transport layer; a network layer and a link layer.
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Port
An address for a software process.
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Socket
A combination of host IP address and a Port number.
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Client Port Numbers
Temporary Port numbers used by client processes; they lie in the range 1024-4095:
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Other cards in this set

Card 2

Front

A private computer network used to share information or operations or transfer data within an organisation.

Back

Intranet

Card 3

Front

Connects networks that use different Link Layer Protocols.

Back

Preview of the back of card 3

Card 4

Front

Connects networks that use the same Link Layer Protocol.

Back

Preview of the back of card 4

Card 5

Front

A unique address that identifies a computer of another electronic device on a network.

Back

Preview of the back of card 5
View more cards

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