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q what is the use of system programsanswer system programs are able to be thought of as bundles of useful system calls they provide fundamental
q what system calls have to be implementing by a command interpreter or shell in order to start a new processanswer in the unix systems a fork system
q what is the use of the command interpreter why is it generally separate from the kernelanswer it reads commands from the user or else from a file
q what are the three main activities of an operating system in regard to secondary-storage managementanswer1 free-space management2 storage
q what are the three main activities of an operating system in regard to memory managementanswera keep follows of which parts of memory are currently
q what are the five main activities of an operating system in regard to process managementanswera the creation as well as deletion of both user and
q what is the use of system callsanswer system calls permit user-level processes to request services of the operating
q is the internet a lan or else a wananswer the internet is a wan as the a variety of computers are located at geographically different places and
q timers could be utilized to compute the current time provide a little description of how this could be accomplished answer a program could utilize
q several cpus provide for more than two modes of operation what are two probable uses of these multiple modesanswer although most systems merely
q some untimely computers protected the operating system by placing it in a memory partition that couldnt be modified by either the user job or the
q which of the subsequent instructions should be privilegeda read the clockb clear memoryc set value of timerd issue a trap instructione turn off
q how does the distinction among kernel mode and user mode function as a rudimentary form of protection security systemanswer the distinction among
q what is the major difficulty that a programmer should overcome in writing an operating system for a real-time environmentanswer the major
q we have stressed the require for an operating system to make efficient use of the computing hardware when is it suitable for the operating system
q list the four steps that are essential to run a program on a completely dedicated machineanswera reserve machine timeb manually load program into
q what are the major differences between operating systems for mainframe computers and personal computersanswer in general operating systems for
q what are the three major purposes of an operating systemanswer to offers an environment for a computer user to execute programs on computer
objective - tiny shell tishin this exercise you will write a small shell program to run different programs in foreground and background
what is busy waitingthe repeated implementation of a loop of code while waiting for an event to happen is known as busy-waiting the cpu is not
what is meant by arm-stickinessif one or a few processes have a high access rate to data on single track of a storage disk then they might be
what is the resident set and working set of a processresident set is that portion of the process image that is actually in real-memory at a certain
what is the translation lookaside buffer tlbin a cached system the base addresses of the last few referenced pages is maintained in registers known
what are the typical elements of a process imageuser data modifiable part of user space may have program data user stack area and programs that might
what are turnaround time and response timeturnaround time is the interval among the submission of a job and its completionresponse time is the