Sunday, June 3, 2007

Question 26

Which of the following is the most appropriate description of preemption in the case of a real-time operating system?

a) A task being executed is suspended at a specified interval and another ready task is executed.
b) When a task being executed terminates or enters wait status, another ready task is executed.
c) If a task with a higher priority than the one being currently executed becomes ready, the latter is suspended and the higher priority task is executed.
d) If a high priority task is waiting for a low priority task to be terminated, the priority level of the low priority task is temporarily increased so that it may be executed

answer

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