Final answer:
The question concerns the determination of which jobs are ready for processing after the first job using different CPU scheduling algorithms. The FCFS and SJN algorithms process jobs based on arrival time and CPU cycle length respectively, SRT looks at the shortest remaining time, and Round Robin processes in fixed time intervals.
Step-by-step explanation:
The student's question is related to different CPU scheduling algorithms and how they process jobs that arrive at certain times and require a certain number of CPU cycles. The scheduling algorithms in question are First-Come, First-Served (FCFS), Shortest Job Next (SJN), Shortest Remaining Time (SRT), and Round Robin with a time quantum of 5.
- FCFS: Jobs will be processed in the order of arrival. Once Job A starts its 15 CPU cycles, Job B (2 CPU cycles) and Job C (14 CPU cycles) will have arrived and ready for processing by the time it finishes.
- SJN: This algorithm selects the job with the shortest CPU cycle next. Job B would run first with its 2 CPU cycles, then Job A or C could be processed next if we're considering the state after Job B finishes.
- SRT: This algorithm selects the job with the shortest remaining time. Initially, Job A would start, but at time 2, Job B arrives and would preempt Job A as it has the shortest CPU cycle (2). After Job B finishes, we'd consider Job A and C which are ready for processing.
- Round Robin: Jobs are processed in chunks of time quantum. If Job A starts first, it will run for 5 cycles, then Job B runs for its full 2 cycles since it's less than the time quantum, then Job C would run for 5 cycles, by this time Jobs D (10 CPU cycles) and E (1 CPU cycle) will have arrived and ready to be processed when Job A's turn comes again after completing its remaining 10 cycles.
By examining the characteristics of each scheduling algorithm, we can determine which jobs are ready for processing during or after the execution of the first job.