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the fuction of an operating system
multitasking
disk/peripheral management
memory management
user management / security
provide of a user interface
file management
what are utilities
utilities provide extra functionality that make it easier to use
they can be packaged as part of the operating system or ought as stand-alone software programs
the operating system controls and manages the computer system
encryption tools
encrypt web communication
encrypt data on an organisation database
encrypt files and folders on a portable disk such as a USB memory stick
backup utilities
you need to save the backed up data on external hard drive
organisation from the samllest companies to the largest banks cannot afford to lose any data
windows has a backup and restore ultility which will create a backup of your files on a regular schedule
you need to back up dataon your hard dusk
comerical backup utilities make sure that even in the event of fire or flood, all data can be recovered