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Real-Time Task Scheduling Advanced Worksheet: Focus on exam-oriented approach Real-Time Task Scheduling ADVANCED

Level up your Real-Time Task Scheduling skills! You're at Worksheet 8 of 10 (77% through this series). This exam hall simulation worksheet features 20 advanced-level problems with a focus on exam-oriented approach. Topics covered: real-time task scheduling bank exam questions, real-time task scheduling ssc cgl, real-time task scheduling reasoning tricks.

📝 Worksheet 8 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Advanced level

What you'll learn in this worksheet:
Your progress through Real-Time Task Scheduling
Worksheet 8 of 10 (77% complete)

Question 1

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 3, Period 10 - Task B: Execution 14, Period 50 - Task C: Execution 3, Period 50 - Task D: Execution 2, Period 10 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 3/10 = 0.300
- Task B: 14/50 = 0.280
- Task C: 3/50 = 0.060
- Task D: 2/10 = 0.200
Total U = 0.840
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.840 > 0.757 (RM bound)

Answer: May not be schedulable

Question 2

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 2, Period 30 - Task B: Execution 7, Period 50 - Task C: Execution 12, Period 50 - Task D: Execution 2, Period 20 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 2/30 = 0.067
- Task B: 7/50 = 0.140
- Task C: 12/50 = 0.240
- Task D: 2/20 = 0.100
Total U = 0.547
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.547 ≤ 0.757 (RM bound)

Answer: Schedulable

Question 3

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 7, Period 30 - Task B: Execution 7, Period 40 - Task C: Execution 3, Period 10 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 7/30 = 0.233
- Task B: 7/40 = 0.175
- Task C: 3/10 = 0.300
Total U = 0.708
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.708 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 4

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 3, Period 10 - Task B: Execution 9, Period 50 - Task C: Execution 2, Period 40 - Task D: Execution 6, Period 20 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 3/10 = 0.300
- Task B: 9/50 = 0.180
- Task C: 2/40 = 0.050
- Task D: 6/20 = 0.300
Total U = 0.830
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.830 > 0.757 (RM bound)

Answer: May not be schedulable

Question 5

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 3, Period 40 - Task B: Execution 4, Period 40 - Task C: Execution 8, Period 30 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 3/40 = 0.075
- Task B: 4/40 = 0.100
- Task C: 8/30 = 0.267
Total U = 0.442
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.442 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 6

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 8, Period 30 - Task B: Execution 6, Period 40 - Task C: Execution 2, Period 40 - Task D: Execution 13, Period 50 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 8/30 = 0.267
- Task B: 6/40 = 0.150
- Task C: 2/40 = 0.050
- Task D: 13/50 = 0.260
Total U = 0.727
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.727 ≤ 0.757 (RM bound)

Answer: Schedulable

Question 7

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 5, Period 20 - Task B: Execution 3, Period 10 - Task C: Execution 2, Period 20 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 5/20 = 0.250
- Task B: 3/10 = 0.300
- Task C: 2/20 = 0.100
Total U = 0.650
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.650 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 8

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 7, Period 30 - Task B: Execution 7, Period 50 - Task C: Execution 5, Period 20 - Task D: Execution 4, Period 30 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 7/30 = 0.233
- Task B: 7/50 = 0.140
- Task C: 5/20 = 0.250
- Task D: 4/30 = 0.133
Total U = 0.757
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.757 ≤ 0.757 (RM bound)

Answer: Schedulable

Question 9

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 9, Period 50 - Task B: Execution 2, Period 10 - Task C: Execution 3, Period 20 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 9/50 = 0.180
- Task B: 2/10 = 0.200
- Task C: 3/20 = 0.150
Total U = 0.530
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.530 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 10

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 6, Period 20 - Task B: Execution 5, Period 30 - Task C: Execution 2, Period 50 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 6/20 = 0.300
- Task B: 5/30 = 0.167
- Task C: 2/50 = 0.040
Total U = 0.507
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.507 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 11

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 11, Period 40 - Task B: Execution 2, Period 20 - Task C: Execution 15, Period 50 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 11/40 = 0.275
- Task B: 2/20 = 0.100
- Task C: 15/50 = 0.300
Total U = 0.675
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.675 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 12

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 3, Period 40 - Task B: Execution 6, Period 30 - Task C: Execution 3, Period 10 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 3/40 = 0.075
- Task B: 6/30 = 0.200
- Task C: 3/10 = 0.300
Total U = 0.575
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.575 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 13

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 9, Period 50 - Task B: Execution 7, Period 40 - Task C: Execution 7, Period 30 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 9/50 = 0.180
- Task B: 7/40 = 0.175
- Task C: 7/30 = 0.233
Total U = 0.588
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.588 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 14

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 7, Period 30 - Task B: Execution 6, Period 20 - Task C: Execution 5, Period 30 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 7/30 = 0.233
- Task B: 6/20 = 0.300
- Task C: 5/30 = 0.167
Total U = 0.700
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.700 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 15

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 5, Period 30 - Task B: Execution 6, Period 20 - Task C: Execution 2, Period 20 - Task D: Execution 10, Period 40 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 5/30 = 0.167
- Task B: 6/20 = 0.300
- Task C: 2/20 = 0.100
- Task D: 10/40 = 0.250
Total U = 0.817
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.817 > 0.757 (RM bound)

Answer: May not be schedulable

Question 16

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 13, Period 50 - Task B: Execution 6, Period 40 - Task C: Execution 11, Period 50 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 13/50 = 0.260
- Task B: 6/40 = 0.150
- Task C: 11/50 = 0.220
Total U = 0.630
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.630 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 17

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 2, Period 30 - Task B: Execution 6, Period 30 - Task C: Execution 12, Period 40 - Task D: Execution 6, Period 20 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 2/30 = 0.067
- Task B: 6/30 = 0.200
- Task C: 12/40 = 0.300
- Task D: 6/20 = 0.300
Total U = 0.867
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.867 > 0.757 (RM bound)

Answer: May not be schedulable

Question 18

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 3, Period 50 - Task B: Execution 2, Period 20 - Task C: Execution 3, Period 30 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 3/50 = 0.060
- Task B: 2/20 = 0.100
- Task C: 3/30 = 0.100
Total U = 0.260
2. RM schedulability bound for 3 tasks: 0.780
3. Conclusion: Utilization 0.260 ≤ 0.780 (RM bound)

Answer: Schedulable

Question 19

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 2, Period 10 - Task B: Execution 2, Period 10 - Task C: Execution 6, Period 20 - Task D: Execution 6, Period 20 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 2/10 = 0.200
- Task B: 2/10 = 0.200
- Task C: 6/20 = 0.300
- Task D: 6/20 = 0.300
Total U = 1.000
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 1.000 > 0.757 (RM bound)

Answer: May not be schedulable

Question 20

Real-time tasks with Rate Monotonic Scheduling (shorter period = higher priority): - Task A: Execution 9, Period 50 - Task B: Execution 9, Period 40 - Task C: Execution 3, Period 10 - Task D: Execution 7, Period 50 Is the task set schedulable under RM?
Step-by-step solution:

1. Calculate utilization:
- Task A: 9/50 = 0.180
- Task B: 9/40 = 0.225
- Task C: 3/10 = 0.300
- Task D: 7/50 = 0.140
Total U = 0.845
2. RM schedulability bound for 4 tasks: 0.757
3. Conclusion: Utilization 0.845 > 0.757 (RM bound)

Answer: May not be schedulable
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