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Topic 3: Networks

QuestionAnswer
3G System to allow Internet access using mobile phone networks.
4G System to allow Internet access using mobile phone networks.
Application server Computer that stores application software for clients on a network.
Asynchronous Data transfer method in which the sender and receiver are not synchronised.
Audit trails Record of all changes and actions performed with a system, for security purposes.
Authentication server Computer that checks usernames and passwords when a user tries to log in.
Authorised access User who has permission to use a system.
Backbone High speed connections that connect main Internet sites.
Bandwidth Measure of a network's speed.
Bits per second Unit for measuring the speed of data transfer over a network connection.
Blog Web page where entries are stored chronologically, like a diary or journal.
Bluetooth Short range, low bandwidth wireless technology often used for mobile phone headsets or earphones.
bps Unit for measuring the speed of data transfer over a network connection.
Cache Storage area for frequently used information, to speed up access.
Client computer Computer on a network that uses services provided by a server.
Client-server Network system that uses servers to store data centrally and client computers to access them.
Database server Computer on a network that stores data for other users to access.
Dynamic Host Control Protocol (DHCP) System that automatically assigns IP addresses to computers on a network.
Dialup Internet access that connects using a telephone line and a MODEM.
Domain Name System (DNS) System for translating domain names into IP addresses.
Domain names Human readable names given to web sites, such as www.itgstextbook.com
Download To transfer data from a server to a client computer.
DSL / cable Common type of broadband Internet connection.
Email server Computer on a network that stores email for other users to access.
Ethernet Type of wired network connection commonly used on LANs.
Fibre optic Types of network connection that offers extremely high speed transfers.
File server Computer on a network that stores files for other users to access.
File Transfer Protocol (FTP) System for transferring files over the Internet, often used for uploading web sites.
Firewall Software or hardware used to control data entering and leaving a network.
Gateway Computer which acts as a bridge between a local area network and the Internet.
Gbps Gigabits per second. Measure of network bandwidth.
Hardware address Unique address embedded in network connected devices.
Home network Small local computer network used in homes.
Host Computer on a network that provides services or performs work for others.
HTTP HyperText Transfer Protocol. The standard protocol of the world wide web.
HTTPS Secure version of HTTP which offers encrypted communication.
Hub Hardware device for connecting several computers on a network.
Internet Protocol Standard protocol used on many LANs and on the Internet. See TCP.
Internet Service Provider (ISP) Company that provides Internet access to homes and businesses.
IP address Unique address assigned to every computer on a network.
Kbps Kilobits per second. Measure of network bandwidth.
Local Area Network (LAN) Computer network in a small area such as an office building.
Log file Chronological record of events, used for reporting purposes and audit trails.
Login Process of authenticating oneself before using a computer system.
MAC address Unique address embedded in network connected devices.
Metropolitan Area Network (MAN) Computer network over a large area such as a city.
Mbps Megabits per second. Measure of network bandwidth.
Microblog Blog-like system which limited post length, such as Twitter.
MODEM Device for connecting a computer to a telephone line, used in dialup connections.
Narrowband Low speed network connection.
Network administrator Individual responsible for maintaining and running a network.
Peer to peer (P2P) Network in which all computers are equal and there are no centralised servers.
Personal Area Network (PAN) Short range network between a computer and a mobile phone or similar portable device.
Personal firewall Software application that controls network access to and from a single computer.
Port Number used to determine the type of service required when a computer connects to another.
Print server Computer on a network that receives and processes print requests.
Protocols A standard set of rules for performing tasks, such as communication.
Proxy server Computer on a network which acts on behalf of another, or through which all Internet data must pass.
Push technology System which notifies users of changes to web pages without them having to visit the page.
Read / write web Refers to web pages which allow user interaction and collaboration.
Remote access Ability to connect to a computer, over a network, as though you were physically present at the keyboard.
Router Hardware device used to connect two separate networks.
RSS Really Simple Syndicate. A push technology.
Storage Area Network (SAN) Network dedicated to providing disk storage to other computers on the network.
Server Computer on a network that provides services or performs work for others.
Social bookmarking Web site that lets users store and manage their favourite links, and share them with others.
Social network Web site that lets users create personal profile pages and share them with friends.
Switch Hardware device for connecting several computers on a network.
Synchronous Data transfer method in which the sender and receiver are synchronised, allowing higher speed transfer.
Tagging Adding key words to an item such as a photo to describe its content.
TCP/IP Transfer Control Protocol / Internet Protocol. Common protocol for LANs and the Internet.
Thin client Networking system whereby client computers rely on servers to perform their processing tasks.
Top-level domain Suffix at the end of a URL, such as .com or .org.
Upload To transfer data from a client to a server computer.
URL Universal Resource Locator. Describes the location of an item, such as a web page, on the Internet.
Virtual LAN Network form by several LANs which are in separate geographical locations.
Virtual Private Network (VPN) Allows a secure private connection over a public network, using an encrypted 'tunnel'. For example, a remote computer can securely connect to a LAN, as though it were physically connected.
VLAN Network form by several LANs which are in separate geographical locations.
Wide Area Network (WAN) Computer network over a large area, such as a country or several countries.
Web 2.0 Refers to web pages which allow user interaction and collaboration.
Web 3.0 Proposed evolution of the world wide web.
Web server Computer on a network that stores web pages.
WiFi Most common type of wireless connection.
Wiki Type of web page that any visitor can edit.
Wireless hotspot The area around a WiFi router where wireless access is available.
WLAN Wireless LAN. A LAN is what allows WiFi connections.
WWW (World Wide Web) a series of interlinked multimedia pages stored on the Internet.
Created by: Swati0101
 

 



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