Operating System Flashcards
What are the roles of the OS(5)
User interface(1) Peripheral management(1) file management(1) user management(1) memory management(1)
What is the uprose of the OS(1)
Manages hardware and runs software.
What is the main function of the OS?(4)
-communicates with internal and external hardware via drivers
-provides user interface allowing the user to interact with the device
-manages the security of the system
-allows the computer to multitask by controlling memory and the CPU
What is a device driver?
Software interface that allows the Operating system to communicate with devices
What does the user interface do?
Displays an output to the user and allows them to interface(interact) with the a computer system
What is multitasking?
An operating system appearing to do several tasks at once.
Pretends by dividing the processing time between each open application and would prioritise certain applications in order for the instructions to be executed efficiently.
What is multiprocessing?
An operating system doing several tasks at once using a multi-core processor.
What is the purpose of defragmentation software?(4)
Software that reorganises data on your computers hard drive to make it easier and faster for the hard drive to access and use that data. (1)
It works by moving files on the hard disk drive(1) so that files are stored together in the same location(1) so it takes less time for your computer to read and write data.(1)
How does compression software reduce file size?(4)
It uses an an algorithm to remove repeated and unnecessary data.(1) There are two types of compression lossy and lossless(1) lossy removes data permanently and lossless means that the original file will be restored(1)
Give examples of Graphic interface(4)
-the menu can be opened from the start button
-there are multiple windows that can open at the same time
-there is a search bar
-icons are displayed to represent shortcuts
What is peripheral management?
An external device connected to a computer system to input or output data.
