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what is hysteresishysteresis is well known in ferromagnetic materials when an external magnetic field is applied to a ferro magnet the atomic dipoles
define time sharingtime sharing sharing of a computing resource among various users by means of multiprogramming and multi-tasking is termed as
define multiprogrammingmultiprogramming a multiprogramming operating system is system which allows extra than one active user program or part of user
define process control block pcbprocess control block pcb information related with each process is stored into process control
define processprocess it is a program in execution process execution should progress into sequential fashion process contains program counter stack
consider the following system snapshot using data structures in the bankers algorithm with resources a b c and d and process p0 to
explain any three parsing techniquesfollowing are three parsing techniquestop-down parsing this parsing can be viewed as an attempt to get left-most
what is parsingparsing it is the process of analyzing a text made of an order of tokens to find out its grammatical structure regarding a given
explain the techniques used for protection of user filesthis is easier to protect against accidental than malicious misuseprotection of user files
differentiate between protection and security operating system contains a collection of objects software or hardware all objects have a unique name
discuss the different techniques with which a file can be shared among different usersseveral popular techniques with that a file can be shared among
explain concurrent sharingconcurrent sharing some number of programs may share a file concurrently while this is the case this is essential to ignore
explain sequential sharingsequential sharing in this technique of sharing a file can be shared through only one program at a time it is file accesses
what is the advantage of buffering is buffering always effective justify your answer with help of an exampleio buffer one type of input-output
what is an io buffer io bufferone type of input-output requirement arises from devices which have a very high character density as disks and tapes
list out the main requirements between page replacement policies which should be satisfied by a page replacement policy the major requirements that
explain the different page replacement policiesvarious page replacement algorithms are briefly explained below1 first-in first-outfifo page
list the steps needed to perform page replacementthe steps required to perform page replacement are1 find out which page is to be removed from the
discuss two main approaches to reuse free memory area in a heaptwo major approaches to reuse free memory area in a heap arefirst-fit allocate the
discuss two main approaches to identify free memory area in a heaptwo popular systems to identify free memory areas as a result of allocation and
what are the properties which a data item should possess to implement a critical section the critical section problem solution should satisfy the
explain how a critical section avoids race conditionto prevent race condition concurrent processes should be synchronizeddata consistency needs that
what is race conditionrace condition the circumstances where several processes access - and manipulate shared data-concurrently the last value of the
a system contains 10 units of resource class ru the resource requirements of three user processes p1 p2 and p3 are as
explain deadlock in operating system deadlock all process in a set of processes is waiting for an event which only a process in the set can