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  • Question
  • In which addressing mode the effective address of the operand is the contents of a register specified in the instruction and after accessing the operand, the contents of this register is incremented to point to the next item in the list?


  • Options
  • A. index addressing
  • B. indirect addressing
  • C. auto increment
  • D. auto decrement
  • E. None of the above

  • Correct Answer
  • auto increment 


  • Operating Systems Concepts problems


    Search Results


    • 1. Which of the following refers to the associative memory?

    • Options
    • A. the address of the data is generated by the CPU
    • B. the address of the data is supplied by the users
    • C. there is no need for an address i.e. the data is used as an address
    • D. the data are accessed sequentially
    • E. None of the above
    • Discuss
    • 2. Addressing structure

    • Options
    • A. defines the fundamental method of determining effective operand addresses
    • B. are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing.
    • C. performs 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
    • 3. Thrashing can be avoided if

    • Options
    • A. the pages, belonging to the working set of the programs, are in main memory
    • B. the speed of CPU is increased
    • C. the speed of I/O processor is increased
    • D. all of the above
    • E. None of the above
    • Discuss
    • 4. A system program that sets up an executable program in main memory ready for execution is

    • Options
    • A. assembler
    • B. linker
    • C. loader
    • D. compiler
    • E. None of the above
    • Discuss
    • 5. The principle of locality of reference justifies the use of

    • Options
    • A. reenterable
    • B. non reusable
    • C. virtual memory
    • D. cache memory
    • E. None of the above
    • Discuss
    • 6. Which of the following functions is(are) performed by the loader

    • Options
    • A. allocate space in memory for the programs and resolve symbolic references between object decks
    • B. adjust all address dependent locations, such as address constants, to correspond to the allocated space.
    • C. physically place the machine instructions and data into memory.
    • D. All of the above
    • E. None of the above
    • Discuss
    • 7. Fork is

    • Options
    • A. the dispatching of a task
    • B. the creation of a new job
    • C. the creation of a new process
    • D. increasing the priority of a task
    • E. None of the above
    • Discuss
    • 8. The memory allocation scheme subject to "external" fragmentation is

    • Options
    • A. segmentation
    • B. swapping
    • C. pure demand paging
    • D. multiple contiguous fixed partitions
    • E. None of the above
    • Discuss
    • 9. The FIFO algorithm

    • Options
    • A. executes first the job that last entered the queue
    • B. executes first the job that first entered the queue
    • C. execute first the job that has been in the queue the longest
    • D. executes first the job with the least processor needs
    • E. None of the above
    • Discuss
    • 10. What does MSCDEX.EXE do?

    • Options
    • A. Configures hard drives
    • B. it's a SCSI driver
    • C. BIOS setup
    • D. it's a CD-ROM DOS driver
    • E. None of the above
    • Discuss


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