Flashcards
Internet and Communications
Cards in this deck (19)
- 1WANWide Area Network
- 2Modem(modulator/ demodulator)
allows a computer system to connect to the internet by allowing digital computer systems to communicate over analogue systems. - 3Broadband Modemsallows for faster data transfer
(can access the internet and make telephone calls on the same line). - 4Media Convertera device which allows computer systems to connect to the Internet using fibre optic cables
- 5HTML(HyperText Markup Language)
one of the main programming languages used to create webpages. - 6.JPEGa format used for storing compressed images. The compression used is LOSSY COMPRESSION. This allows for QUICK DOWNLOAD SPEEDS while maintaining REASONABLY GOOD QUALITY.
- 7.PNGa format used for storing compressed images. The compression used is LOSSLESS COMPRESSION using a non-copyrighted algorithm. The picture quality is EXCELLENT.
- 8.FLAa format used for storing flash multimedia e.g. interactive games, videos, music.
- 9.MP3a format used to store compressed audio. The compression used is LOSSY COMPRESSION. This means SMALL FILE SIZE, QUICK DOWNLOAD SPEEDS while maintaining REASONABLY GOOD QUALITY.
- 10Lossless Compressionan algorithm based type of compression which allows files to be decompressed and compressed without losing data or any detail. It does this by replacing a common string (e.g. 'the') with a token (e.g. '@'). Overall, the quality is EXCELLENT.
- 11Lossy Compressiona type of compression that compresses the file by removing some of the data. This reduces the size of the file. Used to compress multimedia data, especially those that are streamed over the Internet.
- 12Packet Switchingthe process of delivering packers from one Computer System to another using a SWITCH or ROUTER.
- 13Routingthe method of selecting paths along which packets are sent on to a computer network. Certain computer systems like routers, switches, bridges, firewalls, gateways construct in their memory a routing table to ensure the packets are sent in the most efficient path possible.
- 14MAC AddressMedia Access Control Address [a.k.a. a physical address]
a unique hexadecimal number to any communication device stored in their ROM. This hexadecimal number is permanent. - 15IP Addressan address allocated to a computer system on a network. This address is used by the TCP/IP protocol.
- 16DNS(Domain Name System)
a distributed database that matches IP addresses to computer system resources - 17ISP(Internet Service Provider)
an organisation which provides end users with access to the Internet - 18Cookiesdata stored on a computer system which allow websites to store a small amount of uniquely identifying data on to your computer system while you are visiting their website.
- 19Search Enginean application that can be accessed over the Internet which can be used to search for websites on a particular topic.
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- Created by
- Leann McLeod · Mar 2016
- Updated
- Sep 16, 2016
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