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The UNIX operating system for a multiprocessor system has a number of extra features as compared to normal UNIX operating system. Let's first consider the design objectives of multiprocessor UNIX. The original UNIX created by Dennis Ritchie and Brian Kernighan was created as general purpose, portable, time-sharing uniprocessor operating system.
The OS functions comprising virtual memory management, processor scheduling, I/O devices etc are applied with a huge amount of system software. Generally size of OS is larger than size of main memory. The part of OS which exist in main memory is known as kernel. For a multiprocessor OS is created on 3 models viz: Floating executive model, Master slave model, multithreaded kernel. These UNIX kernels are applied with monitors and locks semaphores.
Q. Write a program to implement OR, NOR, AND and NAND gates using and without using Bit wise operator. The menu should be as follows: I. Using Bit Wise operator II. Withou
What is database integration? Database integration is the ability to give user-friendly and cost-effective software solutions for data infrastructure management by the interfac
Direct Mapping: In this particular technique, block j of the primary memory maps onto block j modulo 128 of the cache. The primary memory blocks 0,128,256,...is loaded
Question: Read the following case study and answer the questions based on it. The local airline company needs to develop a system for controlling air traffic at the airport
Visual basic applications have very rich and flexible applications but there is single limitation when using pointer function. Windows API has limited support for function pointers
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Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a particular area of random access memory (RAM) so that they can be acc
Design a counter modulo 4 (sequential circuit with two flip-flops and one input U) which work like that: 1. When U=0, the state of the flip-flop does not change. 2. Whe
Explain at least one modulation technique used for high speed modems. FSK - Frequency Shift Keying: In such technique the frequency of the carrier signal is changed as per to
Explain Protection mechanism. Protection mechanism: The subsequent mechanisms are commonly utilized for protecting files having programs and data. (a) Access controls list
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