Basic Operating System MCQ
Basic Operating System MCQ
211. The following
- Start ? Fetched next instruction Execute Instruction ? Hast, represents
- Instruction cycle with interrupt
- Instruction cycle without interrupt
- Instruction cycle with two interrupts
212. Instruction processing consists of
- Fetched cycle only
- Execution cycle only
- Fetched and Execution cycle both
- None of these
214. The concept used to support multi programming environment on a computer is
- Virtual memory
- Hierachy of physical memory
- Display of multiple windows
- None of the above.
215. Which combnation of the following features will suffice to characterize an OS as a multi programmed OS ?
(i) More than one program may be loaded into main memory at the same time for execution
(ii) If a program waits for certain events such as I/O, another program is immediately scheduled for execution
(iii) If the execution of a program terminates, another program is immediately scheduled for execution
(i) More than one program may be loaded into main memory at the same time for execution
(ii) If a program waits for certain events such as I/O, another program is immediately scheduled for execution
(iii) If the execution of a program terminates, another program is immediately scheduled for execution
- (i) only
- (ii) and (iii)
- (i) and (iii)
- (i), (ii) and (iii).
216. Turnaround time is defimed as
- Delay between job submission and job completion
- A waiting time
- Both (A) and (B) above
- None of these
217. The only state transition initiated by the user proess itself in an operating system is
- Block
- Timer run out
- Dispatch
- Wake up
218. Window 98 is a
- Single user system
- Multi user system
- Single tasking system
- None of these
219. OS/390 is a
- Single user system
- Multi user system
- Single tasking system
- None of these
220. Thread is
- Dispatch able unit of work
- Can be interrupted
- A and B both true
- A and B both false