Task Parameters (Period, Deadline, WCET) – Real-time Systems MCQs 20 min Score: 0 Attempted: 0/20 Subscribe 1. What does the period of a task represent in real-time systems? (A) The time required to complete the task (B) The maximum allowable delay (C) The interval between successive task releases (D) The priority of the task 2. WCET of a task stands for: (A) Waiting cycle execution time (B) Weighted cumulative execution time (C) Worst-case execution time (D) Windowed computation execution time 3. The deadline of a task is: (A) The time by which a task must finish execution (B) The time interval between task releases (C) The execution time of the task (D) Always equal to the period 4. Which parameter is critical for schedulability analysis? (A) Period, WCET, and deadline (B) Task ID and memory size (C) Disk I/O speed (D) CPU idle time 5. A task is considered schedulable if: (A) It ignores deadlines (B) It executes after all other tasks (C) Its WCET is less than its period and deadline constraints are met (D) It is aperiodic 6. Relative deadline is defined as: (A) Time from system start to task completion (B) Time from task release to task deadline (C) WCET of the task (D) Maximum period of all tasks 7. Absolute deadline of a task is: (A) System start time (B) Time interval between task releases (C) WCET plus period (D) Specific time instant by which the task must finish 8. Which of the following is TRUE for periodic tasks? (A) Deadline is always infinite (B) Period is always less than WCET (C) Period and deadline may be equal or different (D) Execution time is irrelevant 9. WCET is important because: (A) It is only used for aperiodic tasks (B) It sets task priorities dynamically (C) It defines task period (D) It determines the worst-case CPU utilization 10. If a task’s WCET exceeds its period, then: (A) The task set may become unschedulable (B) CPU utilization decreases (C) Deadlines are always met (D) The task becomes aperiodic 11. Task parameters are used in which scheduling algorithm for analysis? (A) Batch processing only (B) Round-robin only (C) LLF only (D) RMS, EDF, DMS 12. Which parameter affects the priority assignment in RMS? (A) Deadline only (B) Task period (C) WCET only (D) Task ID 13. In EDF scheduling, the task parameter that determines priority is: (A) WCET only (B) Period only (C) Absolute or relative deadline (D) Memory usage 14. If a task’s deadline is less than its period, it is called: (A) Soft real-time task (B) Aperiodic task (C) Sporadic task (D) Constrained-deadline task 15. Task parameters help in: (A) Reducing CPU speed (B) Ignoring preemption (C) Increasing memory usage (D) Determining schedulability and feasibility of task sets 16. For hard real-time tasks, deadlines: (A) Can be occasionally missed (B) Must always be met (C) Are irrelevant (D) Equal WCET always 17. WCET is usually determined by: (A) CPU speed only (B) Task ID (C) System period (D) Worst-case analysis or measurement 18. The slack time of a task is: (A) WCET plus period (B) Deadline minus current time minus remaining execution time (C) Absolute deadline only (D) Task period 19. Tasks with a deadline equal to period are called: (A) Aperiodic tasks (B) Constrained-deadline tasks (C) Implicit-deadline tasks (D) Sporadic tasks 20. Accurate knowledge of WCET, period, and deadline is important to: (A) Execute tasks randomly (B) Increase CPU idle time (C) Ignore preemption (D) Ensure real-time system reliability and prevent deadline misses Related Posts:Worst Case Execution Time (WCET) Analysis - Real-time Systems MCQsEarliest Deadline First (EDF) - Real-time Systems MCQsDeadline Monotonic Scheduling - Real-time Systems MCQsReal-time Task Models - Real-time Systems MCQsTask Synchronization - Real-time Systems MCQsTask Communication - Real-time Systems MCQs
