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differentiate between protection and securityoperating system contains a collection of objects hardware or software every object has a unique name
why does ftp use two standard ports whereas other protocols in general use only one port justifyfile transfer protocol uses a control connection just
what is the use of urgent pointer in tcp segmentfor accommodation out of band signaling tcp permits the sender to identify data as urgent implies
differentiate between message switching packet switching and circuit switchingmessage switchingrecourse computer sends data to switching office that
differentiate between gateways and bridgesa machine that connects a lan to the internet is termed as a gateway the gateway machine is responsible for
explain difference of circuit switching versus packet switchingwithin circuit switching an end-to-end path is to be establishing before any data can
explain concurrent sharinghere a number of programs that may share a file simultaneously while this is the case it is necessary to prevent mutual
explain message switchingrecourse computer sends data to switching office that stores the data into buffer and seems for a free link sends link to
explain the term middleware in context of rpca variety of commercial tools have been urbanized to assist the programmer in constructing client-
explain sequential sharingin this sharing method a file can be shared by just one program at a time ie file accesses by p1 and p2 are spaced out over
what is an io buffer what is the advantage of buffering is buffering always effective justify your answer with help of an example one type of
not recently used page replacement algorithmthe not recently used abbreviated as nru page replacement algorithm works on the subsequent principle
explain disadvantage of optimal page replacement algorithmoptimal page replacement algorithm cannot be implemented in the general purpose operating
optimal page replacement algorithmthe optimal page replacement algorithm that as well known as opt is an algorithm which works as follows while a
explain garbage collection in this method two passes are made over the memory to identify new areas in the first pass it traverses all pointers
explain the reference count the system relates a reference count along with each memory area to point out the number of its active users this number
explain the race conditionthe situation where various processes access - and manipulate shared data concurrently the final value of the shared data
suppressing the number signs - is carried out using the addition no-signs to the write statementstatement is
the fields specified by select-options and parameters statement cannot be grouped together in the selection screenno the fields specified by
rounding off of values can be carried out using the write statementyes rounding off value can be out by using the write
when calling an external report the parameters or select-options specified in the external report cannot be called
how do you populate data into a multiple line fieldto populate data into a multiple line field an index is added to the field name to show which line
what is a multiple line fielda multiple line field is a special part of field which allows the user to enter multiple lines of data into
what is the last entry in all bdc tablesin all bdc tables the last entry is to save the data by using the field name bdcokcode and a field value of
how do you save data in bdc tables the data in bdc tables is saved by using the field name bdcokcode and field value of