Old Exam - Question 1 MULTIPLE CHOICE QUESTIONS(20 marks 1...

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Question 1: MULTIPLE CHOICE QUESTIONS (20 marks) 1. Which of the following operating systems is not open source? a.Windows b.BSD UNIX c. Linux d. PCLinuxOS 2. Which of the following statements is incorrect? 3. A process control block ___________. 4. The _____ model multiplexes many user-level threads to a smaller or equal number of kernel threads. 5. When two or more processes need a resource that it will never gets, this situation is called a. Bounded-Buffer b. Deadlock c. Bankers Algorithm
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Page 2 of 11 d. Semaphore 6. The _____________ process scheduling algorithm is designed especially for time-sharing systems. 7. Operating System maintains the page table for 8. _____ is the dynamic storage-allocation algorithm which results in the smallest leftover hole in memory. 9. Least Recently Used (LRU) Algorithm ____. a. is the page-replacement algorithm most often implemented b. Replace page that will not be used for longest period of time c. can suffer from Belady's anomaly d. Replace page that has not been used in the most amount of time
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