operating system for net

Which of the following instruction steps, would be written within the diamond-shaped box, of a flowchart? A. S = B - C B. IS A<10 C. PRINT A D. DATA X,4Z E. None of the above

Supervisor State :  Supervisor State को privileged  state भी  कहा  जाता है |  state operating system द्वारा use  की जाती है | operating system , Supervisor state को  regular processing के लिए use में नहीं लेता |  supervisor state  तभी कार्य  करता है जब कोई exception या interrupt  आ जाता है | supervisor state को user access नहीं कर सकता |  supervisor mode में 68000  instruction लिखे  हुए है , जो की सिर्फ supervisor mode में ही execute  होते है | ये instruction कभी  भी user mode में  execute  नहीं होते | MCQ Supervisor state is A. never used B. entered by programs when they enter the processor C. required to perform any I/O D. only allowed to the operating system E. None of the above

Which of the following systems software does the job of merging the records from two files into one? A. Security software B. Utility program C. Networking software D. Documentation system E. None of the above

The Storage-to-Storage instructions A. have both their operands in the main store. B. which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also written into the specified storage location. C. which perform indicated operations on two fast registers of the machine and have the result in one of the registers D. all of the above E. None of the above

The strategy of allowing processes that are logically runnable to be temporarily suspended is called A. preemptive scheduling B. non preemptive scheduling C. shortest job first D. first come first served E. None of the above

The Memory Buffer Register (MBR) A. is a hardware memory device which denotes the location of the current instruction being executed. B. is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory. C. contains the address of the memory location that is to be read from or stored into. D. contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write". E. None of the above

Addressing structure A. defines the fundamental method of determining effective operand addresses B. are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing. C. performs indicated operations on two fast registers of the machine and leave the result in one of the registers. D. all of the above E. None of the above

Process is A. program in High level language kept on disk B. contents of main memory C. a program in execution D. a job in secondary memory E. None of the above     Fork is A. the dispatching of a task B. the creation of a new job C. the creation of a new process D. increasing the priority of a task E. None of the above   Thrashing A. is a natural consequence of virtual memory systems B. can always be avoided by swapping C. always occurs on large computers D. can be caused by poor paging algorithms E. None of the above

A system program that combines the separately compiled modules of a program into a form suitable for execution A. assembler B. linking loader C. cross compiler D. load and go E. None of the above

To avoid the race condition, the number of processes that may be simultaneously inside their critical section is A. 8 B. 1 C. 16 D. 0 E. None of the above

Which of the following refers to the associative memory? A. the address of the data is generated by the CPU B. the address of the data is supplied by the users C. there is no need for an address i.e. the data is used as an address D. the data are accessed sequentially E. None of the above