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Operating System Quiz 1 part 2
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Operating System Quiz 1 part 2 Description: Operating System Quiz 1 Author:
Creation Date: 18/01/2020 Category: Computers Number of questions: 10 |
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Ability to run multiple programs . Logical extension of multiprogramming . If there are no processes to execute, no I/O devices to service, and no users to whom to respond, an operating system will sit quietly, waiting for something to happen . Provides distinction between the execution of operating-system code and user-defined code. Allows OS to maintain control over the CPU by not allowing a user program to get stuck in an infinite loop or to fail to call system services and never return control to the OS. Passive entity, like the contents of a file stored on disk . Needs resources to accomplish its task: CPU time, Memory, files, I/O devices . Has one program counter, specifying the location of the next instruction to execute . Has multiple program counters. Access control determines which user may access a file and how that user may access it . |
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