Operating Systems Concepts problems
- 1. 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
Correct Answer: loader
- 2. 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
Correct Answer: the pages, belonging to the working set of the programs, are in main memory
- 3. 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
Correct Answer: defines the fundamental method of determining effective operand addresses
- 4. 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
Correct Answer: there is no need for an address i.e. the data is used as an address
- 5. 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 Discuss
Correct Answer: auto increment
- 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
Correct Answer: All of the above
- 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
Correct Answer: the creation of a new process
- 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
Correct Answer: segmentation
- 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
Correct Answer: executes first the job that first entered the queue
- 10. 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
Correct Answer: compiler
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