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what is the purpose of system programssystem programs can be thought of as bundles of useful system calls they give basic functionality to users and
what is the purpose of system calls system calls permit user-level processes to request services of the operating
what is the purpose of the command interpreter why is it usually separate from the kernelit reads commands from the user or from a file of commands
what are the five major activities of an operating system in regard to file management the creation and deletion of filesthe creation and deletion of
what are the three main activities of an operating system in regard to secondary-storage managementa free-space managementb storage allocationc disk
what are the three main activities of an operating system in regard to memory managementkeep track of which parts of memory are now being used and by
what are the five major activities of an operating system in regard to process managementthe creation and deletion of both user and system
what is the main difficulty that a programmer must overcome in writing an operating system for a real-time environmentthe main difficulty is keeping
describe the differences between symmetric and asymmetric multiprocessing what are three advantages and one disadvantage of multiprocessor
under what circumstances would a user be better off using a time-sharing system rather than a personal computer or single-user workstationwhen there
we have stressed the need for an operating system to make efficient use of the computing hardware when is it appropriate for the operating system to
define properties of distributed operating systemdistributed- this system distributes computation among several physical processors the processors do
define properties of real time operating systemreal time - often used in a dedicated application this system reads information from sensors and must
define properties of time sharing operating systemtime sharing- this systems uses cpu scheduling and multiprogramming to provide economical
define the properties of interactive operating systeminteractive- this system is composed of many short transactions where the results of the next
define the properties operating systemsbatch- jobs with similar needs are batched together and run through the computer as a group by an operator
in a multiprogramming and time-sharing environment several users share the system simultaneously this situation can result in various security
what are the main differences between operating systems for mainframe computers and personal computersthe design goals of operating systems for those
what is the main advantage of multiprogrammingmultiprogramming makes efficient use of the cpu by overlapping the demands for the cpu and its io
list the four steps that are essential to run a program on a completely dedicated machinea reserve machine timeb manually load program into memoryc
what are the three main purposes of an operating system to give an environment for a computer user to implement programs on computer hardware in a
discuss difference between symmetric and asymmetric multiprocessing symmetric multiprocessing smp in which every processor runs an identical copy
what is spoolingspooling overlaps the io of single job with the computation of other
what is the use of inter process communicationinter process communication gives a mechanism to allow the co-operating process to communicate with
state the advantage of multiprocessor systemthe advantages of multiprocessor system are-a enhanced