Question

14) In a real time operating system, in addition to the correctness of the outputs what determines the correctness of the system? 15) What is the fundamental difference between a hard real time task and a soft real time task? 16) What is the definition of priority inversion and how can this be prevented? 17) Which RAID level is not true RAID and why is it not true RAID? What does RAID stand for? 18) Compare and contrast the Osl model to a general purpose operating system file system.
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Answer #1

Solution:

Note: 14, 15 are done, please repost others.

14)

Based on the correctness of the outputs at every layer the system gets verified for all the outputs, so based on this the correctness of the system is verified.

15)

Hard real-time system:

A hard real-time system has time critical deadlines that must be met, otherwise a catastrophic system failure can occur.

Soft real-time system:

A soft real-time system it considered undesirable, but not catastrophic if deadlines are occasionally missed.

Real-time operating system

Most of the embedded systems are bound to real-time constraints and it is achieved using the real-time system

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