Question Detail Shortest Job First executes first the job with the least processor needsthat first entered the queuethat has been in the queue for the longestthat last entered the queue Answer: Option A Similar Questions : 1. Which technique is used by operating systems to execute several programs concurrently by switching back and forth PartitioningMultitaskingWindowingPaging Answer: Option C 2. Which of the following does not interrupt an running process A deviceTimerSchedular ProcessPower failure Answer: Option C 3. Size of virtual memory depends on size of data bussize of address bussize of main memorynone of above Answer: Option B 4. A high paging rate may cause a high I/O ratekeeps the system running wellis a symptom of too much processor activityalways creates a slow system Answer: Option A 5. A thread is lightweight process where the context switching is low lightweight process where the context swithching is highused to speed up paging used in dead locks Answer: Option A Read more from - Operating System Questions Answers - Chapter 1