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- Question
Semaphores
Options- A. synchronize critical resources to prevent deadlock
- B. synchronize critical resources to prevent contention
- C. are used to do I/O
- D. are used for memory management
- E. None of the above
- Correct Answer
- synchronize critical resources to prevent deadlock
- 1. Which, of the following checks, cannot be carried out on the input data to a system?
Options- A. consistency check
- B. Syntax check
- C. Range check
- D. All of the above
- E. None of the above Discuss
- 2. Which of the following is a block device
Options- A. mouse
- B. printer
- C. terminals
- D. disk
- E. None of the above Discuss
- 3. In an absolute loading scheme, which loader function is accomplished by loader
Options- A. Reallocation
- B. Allocation
- C. Linking
- D. Loading
- E. None of the above Discuss
- 4. Four necessary conditions for deadlock to exist are: mutual exclusion, no-preemption, circular wait and
Options- A. hold and wait
- B. deadlock avoidance
- C. race around condition
- D. buffer overflow
- E. None of the above Discuss
- 5. What is the name given to all the programs inside the computer with makes it usable?
Options- A. Application software
- B. System software
- C. Firm ware
- D. Shareware
- E. None of the above Discuss
- 6. The technique, for sharing the time of a computer among several jobs. Which switches jobs so rapidly such that each job appears to have the computer to itself:
Options- A. time sharing
- B. time out
- C. time domain
- D. FIFO
- E. None of the above Discuss
- 7. A public key encryption system
Options- A. allows anyone to decode the transmission
- B. allows only the correct sender to decode the data
- C. allows only the correct receiver to decode the data
- D. does not encode the data before transmitting it
- E. None of the above Discuss
- 8. Which of the following is characteristic of an operating system?
Options- A. resource management
- B. error recovery
- C. memory management
- D. All the above
- E. None of the above Discuss
- 9. What is the initial value of the semaphore to allow only one of the many processes to enter their critical section?
Options- A. 8
- B. 1
- C. 16
- D. 0
- E. None of the above Discuss
- 10. In which of the storage placement strategies a program is placed in the largest available hole in the main memory?
Options- A. best fit
- B. first fit
- C. worst fit
- D. buddy
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: Syntax check
Correct Answer: disk
Correct Answer: Loading
Correct Answer: hold and wait
Correct Answer: System software
Correct Answer: time sharing
Correct Answer: allows only the correct receiver to decode the data
Correct Answer: All the above
Correct Answer: 1
Correct Answer: worst fit
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