1. NET 424: REAL-TIME SYSTEMS (Practical Part)
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Tutorial 2 : Real-Time Questions

2. How a real time system is different from other computer based systems?
a real time system is characterized by key features that make it different from traditional computing system: timing characteristic (the response should be delivered in a specific time, not before and not after that time), RTS are based on low level programming languages, RTS enable access to hardware components, RTS are designed for a specific hardware.....
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3. Rate-monotonic (RM) algorithm:
What is the difference between static priority and dynamic priority algorithms? Give example for each.
A fixed-priority algorithm assigns the same priority to all the jobs in each task.
Example:
Rate-monotonic (RM) algorithm:
It assigns priorities to tasks based on their periods: the shorter the period, the higher the priority. Hence, the higher the rate, the higher the priority.
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4. (Cont.)
A dynamic-priority algorithm assigns different priorities to the individual jobs in each task.
Example:
Earliest-Deadline-First (EDF)
algorithm assigns priorities to jobs according to their deadlines. The earlier the deadline, the higher the priority.
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5. Give the applications of real time systems.
 real-time application (RTA) is an application programs that functions within a time frame that the user senses as immediate or current. The latency must be less than a defined value, usually measured in seconds. 
Examples of RTAs include:
Videoconference applications
VoIP (voice over Internet Protocol)
Online gaming
Some e-commerce transactions
Chatting
IM (instant messaging)
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