Operating System Basics Questions and Answers

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Q291
Memory buffer register (MBR)  contains
  • A Data that is to be written into memory
  • B A particular I/O device
  • C Exchange data between I/O module and the processor.
  • D The instruction most recetly fetched.
Answer: Option A
Q292
I/O modues move data
  • A Between external environment and computer
  • B In the computer main memory.
  • C In Processors.
  • D None of these
Answer: Option A
Q293
I/O OBR (I/O Buffer register) is
  • A Used for exchange of data between and I/O module and the processor
  • B Specifies particular I/O device
  • C (A) and (B) both true
  • D (A) and (B) both false
Answer: Option A
Q294
User-visible register
  • A Enables machine language programmer to minimize main memory reference by optimizing register use.
  • B Enables assembly language programmer to minimize main memory reference by optimizin register use.
  • C A and B both true.
  • D A and B both false.
Answer: Option C
Q295
The operations of the processor are supervised by
  • A Control and Status register
  • B Data register
  • C Address register.
Answer: Option A
Q296
User-visible register whch of the following do not support GUI (Graphical User Interface)
  • A DOS
  • B WINDOWS
  • C Linux
  • D None of these
Answer: Option A
Q297
In the given operating system match the correct
  • A Thread
  • B Process
  • C The unit of resource ownership.
  • D The unit of dispatching
Answer: Option C
Q298
The MS-DOS an operating system supports
  • A Single user process and multiple threads
  • B Multiple user process and single thread
  • C Single user process and single thread
  • D Multiple user processes and multiple
Answer: Option C
Q299
The UNIX, an operating system supports
  • A Multiple user processes and single thread per process
  • B Multiple user processes and multiple threads per process.
  • C Single user process and single thread per process
  • D Single user process nd multiple threads per process
Answer: Option C
Q300
The java run time environment is an exampe of
  • A Single user process with multiple threads
  • B Multiple user processes with single thread per process.
  • C Multiple user processes with mutiple threads per process.
  • D None of these.
Answer: Option A

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