1. In the following options, which scheduling algorithm can be used in CPU scheduling. A. First-come, first-served B. Worst fit C. First fit D. Best fit Answer: 2. In a system that supports multithreading, process P creates several threads. Which of the following is not shared among threads? A. Code section of process P B. Open files in process P C. Stack pointer of a thread in process P D. Global variables for process P Answer: 3. In the principle of operating system, which part involves FIFO algorithm at the followings: A. Processor scheduling algorithms B. Memory allocation algorithms C. Page replacement algorithm D. Device allocation algorithms Answer: 4. From which queue, will the process scheduler select the process? A. Waiting queue B. Run queue C. Ready queue D. Any queue