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Q. Explain Execution-modes of a multiprocessor?
Execution-modes of a multiprocessor: Several modes of multiprocessing comprise parallel execution of programs at (i) Fine Grain Level (Process Level), (ii) Medium Grain Level (Task Level), (iii) Coarse Grain Level (Program Level).
For executing programs in these modes below conditions/actions are needed at OS level.
i) Context switching between multiple processes must be fast. In order to have context switching easy multiple sets must be present.
ii) The memory allocation to several processes must be context free and fast.
iii) Synchronization mechanism among multiple processes must be effective.
iv) OS must offer software tools for performance monitoring.
Q. What is interrupt? How it is useful in controlling I/O operations. Q. Explain function of Color Graphics Adopter card and Diskette Drive Adopter Card.
Q. Diffrence between RISC and CISC architecture? CISCs provide better support for high-level languages since they include high-level language constructs such as CASE, CALL etc
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