1.5.1 Operating systems Flashcards
what is an operating system
manages all of the software and hardware on the computer.
what is command line interface
a text-based user interface (UI) used to run programs, manage computer files and interact with the computer.
what is natural language and speech
the user and the system communicate via a natural (human) language.
what is the graphical user interface
digital interface in which a user interacts with graphical components
what is memory managing
It decides what to move in and out of RAM.
what is multitasking
is the concurrent execution of multiple tasks over a certain period of time
what is utility software
is build into the operating system ,small piece of software designed to perform one or a few tasks
what is formatting software
used to erase all the data from a drive, this would make it easier to sell.
what is encryption software
used to scramble data so if intercepted cant be understood, needs a decipher to unscramble
what is a backup
make a copy of the data in order to be re-accessed if the data is lost
what are the 2 types of backup
incremental backup
full backup
what is incremental backup
backs up the whole data but when the next backup occurs it only backs up the new data
what is a full backup
backs up all the data
advantages of backups
Incremental backups are faster as it backs up less data but full back ups are faster to be re-accessed as it only needs to re-downloaded once
what is defragmentation
the act of rearranging data on a storage device such as a HDD for efficient storage and access, which can improve performance and speed.
They get fragmented because over time things get deleted leaving spaces, fragmenting the data.
