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Sporadic Tasks: Modeling Timing Constraints

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Sporadic Tasks: Modeling Timing Constraints

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Questions and Answers

What does the 'task deadline' represent in real-time systems?

The minimum separation between successive instances of a task

The maximum allowed time for a task to complete its execution (correct)

The time interval between successive instances of the task

The point at which a new instance of the task becomes available for execution

How can deadlines be expressed in real-time systems?

As the maximum allowed time for a task to complete its execution (correct)

As the point at which a new instance of the task becomes available for execution

As the minimum inter-arrival time between successive instances of a task

As a specific timestamp indicating the task's release time

What is the role of the task release time in scheduling algorithms for periodic tasks?

To determine the minimum separation between successive instances of the task

To represent the maximum allowed time for a task to complete its execution

To establish the time interval between successive instances of the task

To indicate when a new instance of the task becomes available for execution (correct)

In Rate-Monotonic Scheduling (RMS), how are priorities assigned to tasks?

Based on their periods or rates Signup and view all the answers

What does the Earliest Deadline First (EDF) scheduling model use to assign priorities?

Task absolute deadlines Signup and view all the answers

What is a characteristic of Fixed-Priority Scheduling?

Static priorities that remain constant during runtime Signup and view all the answers

In Rate-Monotonic Scheduling, what corresponds to higher priorities?

Shorter periods Signup and view all the answers

Which type of real-time task repeats itself after a fixed time interval?

Periodic tasks Signup and view all the answers

In a periodic task, what does the phase denote?

The release time of the first job in the task Signup and view all the answers

What is the purpose of the relative deadline in a periodic task?

To specify the maximum time allowed between the release time and the completion of the task Signup and view all the answers