Operating System Basics Questions and Answers

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Q181
The main memory of the computer
  • A Controls the operating of computer
  • B Performs data processing functions.
  • C Stores data and programs.
  • D None of these
Answer: Option C
Q182
Program counter (P(C) contains
  • A Address of an instruction to be fetched
  • B Instructions most recently fetched
  • C Data to be written into memory
  • D Data to be read from memory
Answer: Option A
Q183
MAR (memory address register)
  • A Contains data to be written into memory
  • B Contains data to be read from memory
  • C Specifies location in memory for next read/or writer
  • D Contains address of next instruction to be fetched
Answer: Option C
Q184
IR (Instruction register)
  • A Contains the address of an instruction to be fetched
  • B Contains the instruction most recently fetched
  • C Specifies memory addresses.
  • D None of these
Answer: Option B
Q185
Which of the following is not an address register ?
  • A Index register
  • B Segment pointer
  • C Stack pointer
  • D Data register
Answer: Option D
Q186
Following is not the state of Five-State register ?
  • A Index register
  • B Segment pointer
  • C Stack pointer
  • D Data register
Answer: Option C
Q187
Memory table is used
  • A To allocate main memory to process
  • B To allocate secondary memory to process
  • C To manage virtual memory
  • D A, B and C are true
Answer: Option D
Q188
I/O tables are used
  • A To assign I/O devices of computer
  • B To manage I/O devices of computer
  • C A and B both true
  • D A and B both false
Answer: Option C
Q189
The operating system control tables maintains file table, because
  • A These tabes manage I/O devices and channels of the computer system.
  • B These tables provide information aboutl the existence of iles, their location on secondary memory and their current status.
  • C these tables provide information to manage process
  • D None of these
Answer: Option B
Q190
Process in computer
  • A Controls the operations of the computer/process data functions
  • B Stores data and program.
  • C Move data between computer and its external environment.
  • D None of these
Answer: Option A

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