Basic Operating System MCQ
Basic Operating System MCQ
311. Instruction register contains
- The address of an instruction to be feteched
- The instructions most recently fetched.
- The Data to be written into memory.
- The data to be read from memory.
312. The following
- Start ? Fetch next instruction? Execute instruction ? Halt, represents
- instruction cycle with interrupt
- Instruction cycle without interrupt
- Instruction Cycle with two interrupts
313. Instruction processing consists of
- Fetch cycle only
- Execution cycle only
- Fetch and Execution cycle both
- None of these
315. The concept used to support multi programming environment on a computer is
- Virtual memory
- hierachy of physical memory
- Display of multiple windows
- None the above
316. Which combination of the folowing features will siffice 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)
317. Which combination of the folowing features will siffice 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)
318. Turnaround time is defined as
- Delay between job submission and job completion
- A waiting time
- Both (A) and (B) above
- None of these
319. The only state transition initiated by the user process itself in an operating system is
- Block
- Timer run out
- Dispatch
- Wake up
320. Window 98 is a
- Single user system
- Multi user system
- Single tasking system
- None of these