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What is marshalling in computers?
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Explain Throughput, Turnaround time, Waiting time and Response time
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Why do processes need to be scheduled on a computer system?
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State the difference between external and internal fragmentation
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What is the difference between safe and unsafe state?
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How does a job pool execute on the computer system
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What is a job pool?
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Assuming an operating system detects the system is deadlocked, what can it do to recover from deadlock?
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State the three (3) basic strategies for implementing threads on a computer system
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What can operating system do to prevent a deadlock on a computer system?
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Which method for handling deadlocks works on UNIX operating system platform?
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In mailbox sharing, processes P1, P2 and P3 share mailbox A. Process, P1 sends; processes, P2 and P3 receive. Who gets the message? Suggest a solution for this indirect communication
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Differentiate between ordinary and named pipes
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What is the difference between unbounded-buffer and bounded-buffer in the IPC?
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Describe the paradigm for cooperating processes in producer-consumer problem
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State and explain any two (2) of the principal events that cause process creation on windows operating systems
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An operating system executes a variety of programs, name and describe those instructions
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What is the difference between Synchronous I/O and Asynchronous I/O?
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How do we know that Input/Output (I/O) is complete
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Why are operating systems described as extended machines?
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Describe the difference between preemptive and non-preemptive scheduling algorithms. Which is more suitable for a timesharing system and why?
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The problem of core fragmentation can be solved by effecting two (2) methods, name and explain them.
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Compare and contrast deadlock and starvation
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Can a process make transition from a ready state to a blocked state?
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List and explain the parameters that a multilevel feedback queue scheduler may need to execute its task
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In a Batch system, the allocation of the processor is said to be user-dependent whereas in Time Sharing System, the allocation is said to be processor-dependent. Explain.
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Can traps be generated intentionally by a user program? If so, for what purpose?
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What are the differences between a trap and an interrupt?
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On all current computers, at least parts of the interrupt handlers are written in assembly language. Why?
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In round-robin scheduling, new processes are placed at the end of the queue, rather than at the beginning. Suggest reasons.
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What procedure call will a thread invoke to voluntarily give up the CPU for another thread?
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If a system has only two processes, does it make sense to use a barrier to synchronize them?
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In a system with threads, is there one stack per thread or one stack per process when user-level threads are used? What about when kernel-level threads are used? Explain.
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Can a thread ever be preempted by a clock interrupt? If so, under what circumstances? If not, why not?
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In file system implementation, the file allocation table puts all links in one table, thus one entry per physical block in disk. Suggest the merits and demerits of this arrangement.
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A computer system has enough room to hold seven programs in its main memory. These programs are idle waiting for I/O half the time. What fraction of the CPU time is wasted?
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Is a timesharing system also needed in personal computer systems in which only one process exists, that process taking over the entire machine until it is finished?
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Why is the process table needed in a timesharing system?
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Do you think that advanced personal computers will have input and output spooling as a standard feature in the future? Give reasons for your answer
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Differentiate between input and output spooling
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What is the meaning of spooling?
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A system has three (3) processes and four (4) identical resources. Each process needs a maximum of two (2) resources. Is a deadlock possible? Explain
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On early computers, every byte of data read or written was directly handled by the CPU when there was no Direct Memory Access (DMA). What implication does this organization have for multiprogramming
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What are some of the tasks performed by the file system
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Jul 19
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How can a file system can be organised into a free structure and explain two advantages of such an arrangement
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Jul 19
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DIFF BETWEEN LOAD TIME DYNAMIC LINKING VS RUN TIME DYNAMIC LINKING?
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Jul 15
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Explain the convoy effect in regards to the FCFS algorithm
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Jul 14
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What is a program counter
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Jul 14
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What is a process control block and what information is stored in the PCB
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Jul 14
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What is the need for CPU scheduling
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