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Network terms for IT Applications.
Terms in this set (16)
A computer firewall can be hardware or software or a combination of both. A firewall limits the data that can pass through it and protects a networked server or client machine from damage by external, unauthorised users.
A device that connects one network to another. (For example, a router can be used to connect a local area network to the internet) Routers send data along the best routes to reach its network destination.
A computer in a network that provides access to other computers in the network to programs, web pages, data, or other files and services, such as printer access or communications access.
A client computer at which a user can work.
Computer (or standalone device) receives print jobs from clients and sends them to print devices that are either locally attached or connected to the network. (Needed on networks with many users share a few printers)
A computer running a specialized operating system that enables it to host Web pages (and other information) and provide requested Web pages to clients.
An application that keeps a copy of all recently access webpages and files so that if a page is requested again (and it has not been changed) it is delivered from the proxy rather than somewhere on the internet.
Stores files for use on client computers. Used when files are opened and used by more than one user at the same time. (Not needed in small organisations where only one person is accessing a file at a time)
A computer in a client/server system that is responsible for running a DBMS to and managing access for multiple users. (It stops two people trying to change a customer's record at the same time)
Any computer or other device on a network.
Network interface card (NIC)
A type of computer hardware (computer card) that physically connects devices to a network. There is a Network interface card in every computer, printer and other network device connected to a network by UTP. (Cat 6)
Wireless network interface card
A type of computer hardware (computer card) that is installed in network devices to wirelessly connect devices to a network. There is a wireless network interface card in every computer, printer and other network device that is wirelessly connected to a network.
Wireless access point (WAP)
A network device that acts as a central communications device that allows computers and devices to transfer data wirelessly among themselves or to transfer data wirelessly to a network.
A device that connects other devices to the network using UTP cables. A switch stores the address of each device connected to it so that when it receives a message, it only sends it to the device that is meant to receive it.
A device that enables a computer to transmit data over telephone lines. The modem translates the data into the correct format to send over the phone line (MOdulation) and then translates data received through the phone line into digital data to be used by the computer (DEMOdulation).
A device that enables a computer to transmit data over the cable television network. The modem translates the data into the correct format to send over the cable network (MOdulation) and then translates data received through the cable network data to be used by the computer (DEMOdulation).
THIS SET IS OFTEN IN FOLDERS WITH...
IGCSE ICT chapter 2: Input and output devices
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