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.
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312. The following
  • Start ? Fetch next instruction? Execute instruction ? Halt, represents
  • instruction cycle with interrupt
  • Instruction cycle without interrupt
  • Instruction Cycle with two interrupts
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313. Instruction processing consists of
  • Fetch cycle only
  • Execution cycle only
  • Fetch and Execution cycle both
  • None of these
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314. Operating System is
  • Software
  • Hardware
  • Software and Hardware both
  • None of these
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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
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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) only
  • (ii) and (iii)
  • (i) and (iii)
  • (i), (ii) and (iii)
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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) only
  • (ii) and (iii)
  • (i) and (iii)
  • (i), (ii) and (iii)
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318. Turnaround time is defined as
  • Delay between job submission and job completion
  • A waiting time
  • Both (A) and (B) above
  • None of these
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319. The only state transition initiated by the user process itself in an operating system is
  • Block
  • Timer run out
  • Dispatch
  • Wake up
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320. Window 98 is a
  • Single user system
  • Multi user system
  • Single tasking system
  • None of these
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