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What is an I/O subsystem?
The control of devices connected to the computer is a main issue while designing operating systems. Because I/O deices differ widely in their function and speed, varied methods are required to control them. These processes form the I/O subsystem of the kernel, which divide the rest of the kernel from the managing I/O devices
A Unix shell is a shell or command-line interpreter that gives a traditional user interface for the Unix-likesystems and for Unix operating system. Users operates the operation of
Define secondary memory. This memory holds those pages that are not there in main memory. The secondary memory is usually a high speed disk. It is called as the swap device, an
Define logical address and physical address. An address formed by the CPU is referred as logical address. An address seen by the memory unit that is the single loaded into the
A hard-disk drive reads “120 GB HDD 7200 rpm 3 GB/sec transfer rate”. If the drive has a sector size of 512 bytes, what is the average rotational latency and transfer time to read
Discuss in detail Table management Techniques? An Assembler employs the subsequent tables: OPTAB: Operation Code Table consists of mnemonic operation code and its machi
Describe the differences between foreground and background processing. What advantage does background processing provide? 1. Background processes typically run with little or no
Q. Explain about Spooling? Acronym for simultaneous peripheral operations on line. Spooling denotes to putting jobs in a buffer, a special area in memory or on a disk where
define semaphore. how can we use semaphore to deal with n-process critical section problem.
list trhe various classification of model and types?
Q. Presume that the following processes arrive for execution at the times indicated. Every process will run the listed amount of time. In responding the questions use non pre-empti
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