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What is reference string We evaluate an algorithm by running it on a definite string of memory reference and computing the number of page faults. The string of memory reference
Write a short note on PCB? Every process is represented in the operating system by a process control block also called a task control block. It contains more information regard
what is the use of valid invalid bits in paging
Define Program preemption The Forced de-allocation of the CPU from a program which is executing on the CPU is known as Program preemption
Second chance Algorithm When the page is chosen the reference bit is checked to see whether it has been referenced before. If that is the case after that it is given a second c
Give an overview of WINDOWS 2000 file management. Windows makes use of the NTFS and File Allocation Table file systems. The Older versions of the FAT file system had file name
Define process? What is meant by state of a process? Process is a program in implementation. A process in general includes the process stack, which consists temporary data and
Q. Describe the purpose of the open() and close() operations. Answer: The open() operation notifies the system that the named file is about to become active. The c
Explain Swapping Swapping is a method of temporarily removing inactive programs from the memory of computer system.
Briefly explain the process management in UNIX. UNIX makes use of the easy but powerful process facility that is visible to the user. UNIX follows the model in which the majori
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