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- Question
Data encryption
Options- A. is mostly used by public networks
- B. is mostly used by financial networks
- C. cannot be used by private installations
- D. is not necessary, since data cannot be intercepted
- E. None of the above
- Correct Answer
- is mostly used by financial networks
- 1. The dispatcher
Options- A. actually schedules the tasks into the processor
- B. puts tasks in I/O wait
- C. is always small and simple
- D. never changes task priorities
- E. None of the above Discuss
- 2. Seeks analysis
Options- A. is used for analyzing paging problems
- B. is used for analyzing device busy problems
- C. is used for analyzing control-unit busy problems
- D. is only shown on real-time displays
- E. None of the above Discuss
- 3. Which of the following statements is false?
Options- A. a small page size causes large page tables
- B. internal fragmentation is increased with small pages
- C. a large page size causes instructions and data that will not be referenced brought into primary storage
- D. I/O transfers are more efficient with large pages
- E. None of the above Discuss
- 4. With MS-DOS which command will divide the surface of the blank floppy disk into sectors and assign a unique address to each one?
Options- A. FORMAT command
- B. FAT command
- C. VER command
- D. CHKDSK command
- E. None of the above Discuss
- 5. The initial value of the semaphore that allows only one of the many processes to enter their critical sections, is
Options- A. 8
- B. 1
- C. 16
- D. 0
- E. None of the above Discuss
- 6. The SJF algorithm executes first the job
Options- A. that last entered the queue
- B. that first entered the queue
- C. that has been in the queue the longest
- D. with the least processor needs
- E. None of the above Discuss
- 7. Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because
Options- A. they are memory resident
- B. they are initially stored on disk
- C. they are available on magnetic tapes
- D. they are partly in primary memory and partly on disk
- E. None of the above Discuss
- 8. Which, of the following is not true about the description of a decision table?
Options- A. A decision table is easy to modify
- B. A decision table is directly understood by the computer
- C. A decision table is easy to understand
- D. All of the above
- E. None of the above Discuss
- 9. Multiprogramming
Options- A. is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
- B. consists of those addresses that may be generated by a processor during execution of a computation.
- C. is a method of allocating processor time.
- D. allows multiple programs to reside in separate areas of core at the time.
- E. None of the above Discuss
- 10. What is the name given to the process of initializing a microcomputer with its operating system?
Options- A. Cold booting
- B. Booting
- C. Warm booting
- D. Boot recording
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: actually schedules the tasks into the processor
Correct Answer: is used for analyzing device busy problems
Correct Answer: internal fragmentation is increased with small pages
Correct Answer: FORMAT command
Correct Answer: 1
Correct Answer: with the least processor needs
Correct Answer: they are initially stored on disk
Correct Answer: A decision table is directly understood by the computer
Correct Answer: allows multiple programs to reside in separate areas of core at the time.
Correct Answer: Booting
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