ict

filing cabnets

HDD

save and retrieve digital information that will be required for future reference.

is a technology that enables the reading, writing, deleting and modifying of data on a computer storage disk.

is the process and act of creating an organized structure in which u store information for easy retrival.

is a virtual storage space used to store and organize computer files.

is a physical storage device

is a file system on part of or many disks.
it is used to read and store information on the computer.

the hard disk

is a web based service that provides storage space on a remote server.

3 or 4 letter word identifier that tells u about the characteristics and the uses of the file.

is a program that manages computers resources, especially the allocation of those resources among other programs.

developed by Microsoft corporation to run PC's. it featured the first graphical user interface for IBM compatible PCs

is a multi tasking multi user os. a command based computer operation has been constantly updated

is an open source operating system

is a part of an operating system that controls and manages files and programs stored on a disk.

is a modified version of the linux kernel and other open source software. only for touch screen mobile devices.

hardware or software failure. data corruption. human caused event such as malicious virus accidental deletion of data

copying backed up data from a secondary location

is a data compression method in which the logical size of a file is reduced to save disk space for easier and faster transmission over a network or the internet. also known as file zipping.

winRaR, winzip and 7 zip

3kHz and 1Ghz

in sky mode propagation

multicasting in which there is one sender but many receiver

AM and FM radio, tv, Martine radio, cordless phones and paging

line of sight wireless communication that use high frequency beams of radio waves

300Mhz-300Ghz

high speed wireless connection, send and recieve voice, video and data information. they are unidirectional which mean the sender and receiver antennas need to be alligned.

parabolic dish and horn

when we need a unicast communication. we also use it in cellular phones, satellite networks and wireless LANS

also called infrared light, it is electromagnetic radiation with wavelengths longer those of visible lights. it is invisible to the human eye. we use it to change channels on the tv.

300Ghz-400Thz