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
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212. Instruction processing consists of
  • Fetched cycle only
  • Execution cycle only
  • Fetched and Execution cycle both
  • None of these
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213. Operating System is
  • Software
  • Hardware
  • Software and Hardware both
  • None of these
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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.
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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) only
  • (ii) and (iii)
  • (i) and (iii)
  • (i), (ii) and (iii).
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216. Turnaround time is defimed as
  • Delay between job submission and job completion
  • A waiting time
  • Both (A) and (B) above
  • None of these
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217. The only state transition initiated by the user proess itself in an operating system is
  • Block
  • Timer run out
  • Dispatch
  • Wake up
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218. Window 98 is a
  • Single user system
  • Multi user system
  • Single tasking system
  • None of these
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219. OS/390 is a
  • Single user system
  • Multi user system
  • Single tasking system
  • None of these
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220. Thread is
  • Dispatch able unit of work
  • Can be interrupted
  • A and B both true
  • A and B both false
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