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  • Question
  • IBM released its first PC in 1981. Can you name the operating system which was most popular at that time?


  • Options
  • A. MS-DOS
  • B. PC-DOS
  • C. OS/360
  • D. CP/M
  • E. None of the above

  • Correct Answer
  • CP/M 


  • Operating Systems Concepts problems


    Search Results


    • 1. A translator which reads an entire programme written in a high level language and converts it into machine language code is:

    • Options
    • A. assembler
    • B. translator
    • C. compiler
    • D. system software
    • E. None of the above
    • Discuss
    • 2. In laser printing, there are six steps the printer follows. What comes between the conditioning phase and the developing phase?

    • Options
    • A. transfer phase
    • B. writing phase
    • C. fusing phase
    • D. cleaning phase
    • E. All of the above
    • Discuss
    • 3. Which component stores an electrical charge?

    • Options
    • A. diode
    • B. rectifier
    • C. capacitor
    • D. resistor
    • E. transistor
    • Discuss
    • 4. Which controller would support an external CD-ROM drive?

    • Options
    • A. ESDI
    • B. ARLL
    • C. MFM
    • D. SCSI
    • E. None of the above
    • Discuss
    • 5. Which is NOT typically a Field Replaceable Unit?

    • Options
    • A. System ROM
    • B. Power supply
    • C. System chassis
    • D. Video controller
    • E. None of the above
    • Discuss
    • 6. A page fault

    • Options
    • A. is an error is a specific page
    • B. occurs when a program accesses a page of memory
    • C. is an access to a page not currently in memory
    • D. is a reference to a page belonging to another program
    • E. None of the above
    • Discuss
    • 7. The CPU, after receiving an interrupt from an I/O device

    • Options
    • A. halts for a predetermined time
    • B. hands over control of address bus and data bus to the interrupting device
    • C. branches off to the interrupt service routine immediately
    • D. branches off to the interrupt service routine after completion of the current instruction
    • E. None of the above
    • Discuss
    • 8. Which of the following is false about disk when compared to main memory?

    • Options
    • A. non-volatile
    • B. longer storage capacity
    • C. lower price per bit
    • D. faster
    • E. None of the above
    • Discuss
    • 9. The Register - to - Register (RR) instructions

    • Options
    • A. have both their operands in the main store.
    • B. which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also written into the specified storage location.
    • C. which perform indicated operations on two fast registers of the machine and leave the result in one of the registers.
    • D. all of the above
    • E. None of the above
    • Discuss
    • 10. The working set theory of programming behaviour of processes running within an operating system involves

    • Options
    • A. the collection of pages that a process accesses
    • B. disk scheduling mechanisms
    • C. coalescing holes in memory
    • D. assigning the CPU to processes
    • E. None of the above
    • Discuss


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