Operating System Questions Answers - Chapter 1 Online Quiz Test

• 1. The part of machine level instruction, which tells the central processor what has to be done, is

  1. Operation code
  2. Address
  3. Locator
  4. Flip-Flop

• 2. What is the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer user's productivity?

  1. Defined values
  2. Fixed values
  3. Default values
  4. None of the above

• 3. Multiprogramming systems

  1. Are easier to develop than single programming systems
  2. Execute each job faster
  3. Execute more jobs in the same time
  4. Are used only on large main frame computers

• 4. A thread is

  1. lightweight process where the context switching is low
  2. lightweight process where the context swithching is high
  3. used to speed up paging
  4. used in dead locks

• 5. The LRU algorithm

  1. pages out pages that have been used recently
  2. pages out pages that have not been used recently
  3. pages out pages that have been least used recently
  4. pages out the first page in a given area

• 6. Shortest Job First executes first the job

  1. with the least processor needs
  2. that first entered the queue
  3. that has been in the queue for the longest
  4. that last entered the queue

• 7. Operating system is

  1. A collection of hardware components
  2. A collection of input output devices
  3. A collection of software routines
  4. All of above

• 8. Semaphores function is to

  1. synchronize critical resources to prevent deadlock
  2. synchronize processes for better CPU utilization
  3. used for memory management
  4. none of above

• 9. Fragmentation of a file system

  1. occurs only is file is not used properly
  2. can always be prevented
  3. happens in all file systems
  4. can be removed by compaction

• 10. A public key encryption system

  1. Allows only the correct sender to decode the data
  2. Allows only the correct receiver to decode the data
  3. Allows anyone to decode the data
  4. none of above

• 11. A high paging rate

  1. may cause a high I/O rate
  2. keeps the system running well
  3. is a symptom of too much processor activity
  4. always creates a slow system

• 12. Creating a job queue is a function of

  1. Spooler
  2. Interperator
  3. Complier
  4. Drive

• 13. Which operating system use write through catches

  1. UNIX
  2. XENIX
  3. ULTRIX
  4. DOS

• 14. Which process is known for initializing a microcomputer with its OS

  1. cold booting
  2. boot recording
  3. booting
  4. warm booting

• 15. Which of the following does not interrupt an running process

  1. A device
  2. Timer
  3. Schedular Process
  4. Power failure

• 16. To avoid the race condition, the number of processes that may be simultaneously inside the critical section is

  1. 12
  2. 3
  3. 1
  4. 0

• 17. Dynamic allocation of storage areas with VSAM files is accomplished by

  1. hashing
  2. control splits
  3. over flow areas
  4. relative recording

• 18. Poor response times are caused by

  1. Busy processor
  2. High I/O rate
  3. High paging rates
  4. Any of above

• 19. Four necessary conditions for deadlock are non pre-emption, circular wait, hold and wait and

  1. mutual exclusion
  2. race condition
  3. buffer overflow
  4. None of above

• 20. Remote computing services involves the use of timesharing and

  1. multiprocessing
  2. interactive processing
  3. batch processing
  4. real time processing