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Q. What is the major difficulty that a programmer should overcome in writing an operating system for a real-time environment?
Answer: The major difficulty is keeping the operating system within the fixed time constraints of a real-time system. If the system doesn't complete a task in a certain time frame it may cause a breakdown of the entire system it is running. Thus when writing an operating system for a real-time system the writer should be sure that his scheduling schemes don't allow response time to exceed the time constraint.
Q. Distinguish among a STREAMS driver and a STREAMS module? Answer: The STREAMS driver controls the physical device that could be involved in a STREAMS operation. The STREAMS
Question: (a) Explain the similarities and differences between two different threads running in the same process and two independent processes. When would you want to use two t
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What are scheduling queues? Since the processes enter the system they are put into job queue. This queue contains all processes in the system. The processes that are exist in m
Priority Scheduling leads to the risk of starvation: a process is ready, but never is given the processor. Some preemptive priority schedulers therefore reserve a fraction of the p
Define properties of Distributed operating system Distributed:- This system distributes computation among several physical processors. The processors do not share memory or a
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what is it all about? why do we need? what are the types of backup? how is it done in unix?
What are the functions of virtual file system (VFS)? a. It separates file-system-generic operations from their execution defining a clean VFS interface. It permits transparent
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