751. 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
752. 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
753. 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
754. 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
755. Which of the following statements is false?
A. the technique of storage compaction involves moving all occupied areas of storage to one end or other of main storage
B. compaction does not involve relocation of programs
C. compaction is also know as garbage collection
D. the system must stop everything while it performs the compaction
E. None of the above
756. Interprocess communication
A. is required for all processes
B. is usually done via disk drives
C. is never necessary,
D. allows processes to synchronize activity
757. Which of the following functions is(are) performed by the loader
A. allocate space in memory for the programs and resolve symbolic references between object decks
B. adjust all address dependent locations, such as address constants, to correspond to the allocated space.
C. physically place the machine instructions and data into memory.
D. All of the above
E. None of the above
758. User-Friendly Systems are:
A. required for object-oriented programming
B. easy to develop
C. common among traditional mainframe operating systems
D. becoming more common
E. None of the above
759. Which of the following addressing modes, facilitates access to an operand whose location is defined relative to the beginning of the data structure in which it appears?
A. ascending
B. sorting
C. index
D. indirect
E. None of the above
760. While running DOS on a PC, which command would be used to duplicate the entire diskette?
A. COPY
B. DISKCOPY
C. CHKDSK
D. TYPE
E. None of the above