Power-aware Real-time Systems – Real-time Systems MCQs 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is the main goal of power-aware real-time systems? (A) To store execution logs without analysis (B) To replace real-time operating systems (C) To minimize energy consumption while meeting task deadlines (D) To execute batch-only tasks 2. Dynamic Voltage and Frequency Scaling (DVFS) is used to: (A) Adjust processor voltage and frequency to save power dynamically (B) CPU idle exclusively (C) Disk batch-only operations (D) Memory-only scaling 3. Power-aware scheduling considers: (A) Task deadlines, execution times, and energy consumption (B) CPU idle exclusively (C) Disk batch-only tasks (D) Memory-only constraints 4. One benefit of power-aware real-time systems is: (A) Memory-only conservation (B) CPU idle exclusively (C) Disk batch-only optimization (D) Extended battery life in embedded and mobile systems 5. Energy-efficient task execution can be achieved by: (A) Memory-only management (B) CPU idle exclusively (C) Disk batch-only operations (D) Reducing processor frequency for non-critical tasks 6. One challenge in power-aware scheduling is: (A) Disk batch-only timing (B) CPU idle exclusively (C) Balancing energy savings with meeting real-time deadlines (D) Memory-only deadlines 7. Idle task insertion in power-aware systems allows: (A) Disk batch-only idling (B) CPU idle exclusively (C) The processor to enter low-power states during idle periods (D) Memory-only low-power states 8. Leakage power reduction is important because: (A) CPU idle exclusively (B) It reduces static energy consumption in modern processors (C) Disk batch-only power (D) Memory-only reduction 9. Power-aware multiprocessor scheduling involves: (A) Disk batch-only scheduling (B) CPU idle exclusively (C) Assigning tasks to processors while minimizing energy consumption (D) Memory-only assignment 10. One technique for power-aware scheduling is: (A) CPU idle exclusively (B) Task slack reclamation to run tasks at lower energy levels (C) Disk batch-only slack (D) Memory-only reclamation 11. In battery-powered systems, power-aware design helps: (A) Disk batch-only operation (B) CPU idle exclusively (C) Extend operational lifetime without missing deadlines (D) Memory-only lifetime extension 12. One metric for evaluating power-aware systems is: (A) Memory-only energy (B) CPU idle exclusively (C) Disk batch-only consumption (D) Energy per task or energy per operation 13. Combining DVFS with task scheduling can: (A) CPU idle exclusively (B) Reduce overall system energy while maintaining real-time constraints (C) Disk batch-only energy reduction (D) Memory-only DVFS 14. Low-power modes in processors help by: (A) Reducing clock frequency, voltage, or shutting down idle components (B) CPU idle exclusively (C) Disk batch-only low-power (D) Memory-only shutdown 15. Power-aware systems often trade off: (A) CPU idle exclusively (B) Energy consumption versus performance or timing guarantees (C) Disk batch-only trade-offs (D) Memory-only trade-offs 16. Thermal-aware real-time systems are related to power-aware systems because: (A) Disk batch-only thermal management (B) CPU idle exclusively (C) Lower energy consumption reduces heat generation (D) Memory-only temperature control 17. One challenge in multicore power-aware scheduling is: (A) Disk batch-only core coordination (B) CPU idle exclusively (C) Coordinating DVFS across cores while meeting deadlines (D) Memory-only multicore management 18. Power-aware embedded systems are crucial in: (A) Disk batch-only embedded systems (B) CPU idle exclusively (C) Mobile devices, IoT, and sensor networks (D) Memory-only applications 19. Energy-aware real-time operating systems provide: (A) Disk batch-only power APIs (B) CPU idle exclusively (C) APIs and mechanisms for DVFS, idle management, and power monitoring (D) Memory-only management 20. The main goal of power-aware real-time systems is: (A) Ensuring tasks meet deadlines efficiently while minimizing energy consumption (B) CPU idle exclusively (C) Disk batch-only execution (D) Memory-only optimization Related Posts:Operating systems (OS), Examples of operating systems, Advantages of operating systemsAdaptive Real-time Systems – Real-time Systems MCQsHard vs Soft Real-time Systems - Real-time Systems MCQsReal-time vs General-purpose Systems - Real-time Systems MCQsFieldbus Systems - Real-time Systems MCQsMicrocontroller-based Systems - Real-time Systems MCQs