Real Time System - Quiz 2

Quiz 2

8 questions

1
point

1. 

When can the Urm test be applied?

If all the tasks are periodic

If the tasks have short respones times

If the tasks are pre-emtive

If the deadline is closer than the period

1
point

2. 

What does the "total utilization" mean?

The slack or "room" left in the schedule

The sum of the utilization of all tasks

The time remaining until the deadline is reached for a task

The total number of processors used

1
point

3. 

Why is DM sometimes better than RM?

DM is easier to verify

DM is more flexible

Distance to deadlines is sometimes a better metric than frequency of periodsto schedule tasks according to

DM has a significantly lower overhead

1
point

4. 

Why is the fixed priority scheduler sometimes better than RM?

Fixed priority scheduler is easier to verify

Fixed priority scheduler is less complex

Fixed priority scheduler is more flexible

Fixed priority scheduler can handle sporadic jobs better

1
point

5. 

Why is RM sometimes better than the static scheduler?

RM is more flexible

RM is easier to verify

RM has a lower overhead

RM is less complex

1
point

6. 

Why is a static scheduler sometimes better than RM?

It can handle aperiodic jobs better

It has a more predictable task execution

It is more flexible

It can handle sporadic jobs better

1
point

7. 

What is the maximum latency of a round-robin scheduler?

The length of one OS tick

The execution time of all jobs with the maximum queue length

It cannot be determined

The execution time of the longest job in the queue

1
point

8. 

Why cannot the maximum frame size be smaller than the execution time of the largest job?

The job would get a too low priority

The job would miss its deadline

The total utilization would be greater than 1

The context switch would be earlier than the completion time of the job