OPERATING SYSTEMS FOR COMPUTERS
COMPUTER OPERATING SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Document is printed when printer is free/in correct order
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Ensures that data is stored and can be retrieved correctly from any disk drive
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Ensures that all programs and data including itself is stored in correct memory locations
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On a multi-tasking O/S ensure that all tasks appear to run simultaneously
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Detailed explanation-1: -Backing Store Management When files and applications are loaded, they are transferred from backing storage (Hard Drive) into memory. The operating system must maintain a directory of the files stored so they can be quickly accessed. It is important to also know the location of any free space on the backing storage.
Detailed explanation-2: -The OS provides the common access routines to the secondary disk storage devices. It will keep track of data and program file names, physical locations and perform common functions such as the copying, erasing or backing up of data.
Detailed explanation-3: -All data is stored in files, within folders, within drives. The file management system does this by creating a virtual file structure of the physical components. It is a hierarchical structure starting with the root directory, a bit like an upside-down tree.
Detailed explanation-4: -The operating system is a primary resource manager. It manages the hardware, including processors, memory, Input-Output devices, and communication devices. The operating system operates either in kernel mode or user mode. Compilers and editors run in user mode, whereas operating system code runs in kernel mode.