Top 250+ Solved Operating System Advanced MCQ Questions Answer
Q. The main memory of the computer
a. Controls the operations of computer.
b. Performs data processing functions.
c. Stores data and programs.
d. None of these.
Q. 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
Q. 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 fetche
Q. 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.
Q. Which of the following is not an address register?
a. Index register
b. Segment pointer
c. Stack pointer
d. Data register.
Q. Following is not the state of Five-State process model
a. Ready
b. Running
c. Not Running
d. New.
Q. Memory table is used
a. To allocate main memory to processes
b. To allocate secondary memory to processes
c. To manage virtual memory
d. A, B and C are true.
Q. I/O tables are used
a. To assign I/O devices of computer
b. To manage I/O devices of computer system
c. A and B both true
d. A and B both false.
Q. The operating system control tables maintains file table, because
a. These tables manage I/O devices and channels of the computer system.
b. These tables provide information about the existence of files, their location on secondary memory and their current status.
c. These tables provide information to manage process.
d. None of these.
Q. Processor in computer
a. Controls the operations of the computer/ processes data functions.
b. Stores data and program.
c. Moves data between computer and its external environment.
d. None of these.
Q. 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 recently fetche
Q. I/O modules move data
a. Between external environment and computer.
b. In the computer main memory.
c. In Processors
d. None of these.
Q. I/O OBR (I/O Buffer register) is
a. Used for the exchange of data between an I/O module and the processor.
b. Specifies particular I/O device.
c. (A) and (B) both true.
d. (A) and (B) both false.
Q. 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 optimizing register use.
c. A and B both true.
d. A and B both false.
Q. User-Visible register Which of the following do not support GUI (Graphical User Interface)
a. DOS
b. WINDOWS
c. Linux
d. None of these.