Operating Systems Concepts problems
- 1. Under virtual storage,
Options- A. a single program is processed by two or more CPUs
- B. two or more programs are stored concurrently in primary storage
- C. only the active pages of a program are stored in primary storage
- D. interprogram interference may occur
- E. None of the above Discuss
Correct Answer: only the active pages of a program are stored in primary storage
- 2. Can you name of the major Operating System used in computers?
Options- A. MS DOS
- B. OS/2
- C. UNIX
- D. All of the above
- E. None of the above Discuss
Correct Answer: All of the above
- 3. Daisy chain is a device for
Options- A. connecting a number of controllers to a device
- B. connecting a number of devices to a controller
- C. interconnecting a number of devices to a number of controllers
- D. all of the above
- E. None of the above Discuss
Correct Answer: connecting a number of devices to a controller
- 4. Which of the following is not an advantage of multiprogramming?
Options- A. increased throughput
- B. shorter response time
- C. decreased operating-system overhead
- D. ability to assign priorities to jobs
- E. None of the above Discuss
Correct Answer: decreased operating-system overhead
- 5. Poor response times are caused by
Options- A. Processor busy
- B. High I/O rate
- C. High paging rates
- D. Any of the above
- E. None of the above Discuss
Correct Answer: Any of the above
- 6. Which of the following statement is true.
Options- A. The LRU algorithm pages out pages that have been used recently
- B. Thrashing is a natural consequence of virtual memory systems.
- C. Seek analysis is used for analysing control-unit busy problems.
- D. All of the above
- E. None of the above Discuss
Correct Answer: Seek analysis is used for analysing control-unit busy problems.
- 7. The most common security failure is
Options- A. carelessness by users
- B. depending on passwords
- C. too much emphasis on preventing physical access
- D. insufficient technology used to prevent breaches
- E. None of the above Discuss
Correct Answer: carelessness by users
- 8. What is the name of the operating system which was originally designed by scientists and engineers for use by scientists and engineers?
Options- A. XENIX
- B. UNIX
- C. OS/2
- D. MS DOS
- E. None of the above Discuss
Correct Answer: UNIX
- 9. Part of a program where the shared memory is accessed and which should be executed invisibly, is called
Options- A. semaphores
- B. directory
- C. critical section
- D. mutual exclusion
- E. None of the above Discuss
Correct Answer: critical section
- 10. Object code
Options- A. is ready to execute
- B. is the output of compilers, but not assemblers
- C. must be "loaded" before execution
- D. must be rewritten before execution
- E. None of the above Discuss
Correct Answer: must be "loaded" before execution
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