Operating System Basics Questions and Answers

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Q211
The following
  • A Start ? Fetched next instruction Execute Instruction ? Hast, represents
  • B Instruction cycle with interrupt
  • C Instruction cycle without interrupt
  • D Instruction cycle with two interrupts
Answer: Option C
Q212
Instruction processing consists of
  • A Fetched cycle only
  • B Execution cycle only
  • C Fetched and Execution cycle both
  • D None of these
Answer: Option C
Q213
Operating System is
  • A Software
  • B Hardware
  • C Software and Hardware both
  • D None of these
Answer: Option A
Q214
The concept used to support multi programming environment on a computer is
  • A Virtual memory
  • B Hierachy of physical memory
  • C Display of multiple windows
  • D None of the above.
Answer: Option C
Q215
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
  • A (i) only
  • B (ii) and (iii)
  • C (i) and (iii)
  • D (i), (ii) and (iii).
Answer: Option D
Q216
Turnaround time is defimed as
  • A Delay between job submission and job completion
  • B A waiting time
  • C Both (A) and (B) above
  • D None of these
Answer: Option A
Q217
The only state transition initiated by the user proess itself in an operating system is
  • A Block
  • B Timer run out
  • C Dispatch
  • D Wake up
Answer: Option A
Q218
Window 98 is a
  • A Single user system
  • B Multi user system
  • C Single tasking system
  • D None of these
Answer: Option A
Q219
OS/390 is a
  • A Single user system
  • B Multi user system
  • C Single tasking system
  • D None of these
Answer: Option B
Q220
Thread is
  • A Dispatch able unit of work
  • B Can be interrupted
  • C A and B both true
  • D A and B both false
Answer: Option C

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