This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Computer Science Chapter 2 Operating System – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Computer Science Chapter 2 Operating System Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. To do more than one task at a time A) Operating system. B) Multi task. C) Interface. D) Single user. Show Answer Correct Answer: B) Multi task. 2. Device controllers inform CPU that it is finished without operation by causing an ..... A) Interrupt vector. B) Bootstrap program. C) Kernel. D) Control program. Show Answer Correct Answer: A) Interrupt vector. 3. What is the purpose of the binding mechanism in RPC? A) To synchronize calls between the client and server. B) To map client requests to the correct server and procedure. C) To encrypt data transmitted over the network. D) To serialize data before transmission. Show Answer Correct Answer: B) To map client requests to the correct server and procedure. 4. 10) When a page fault occurs, the state of the interrupted process is ..... A) Disrupted. B) Invalid. C) Saved. D) None of the mentioned. Show Answer Correct Answer: C) Saved. 5. Which of the following scheduling algorithms is non-preemptive scheduling? A) SJF scheduling. B) Round-Robin scheduling. C) SRTF scheduling. D) None of these. Show Answer Correct Answer: A) SJF scheduling. 6. The bounded buffer problem is also known as ..... A) Readers-Writers problem. B) Dining-Philosophers problem. C) Producer-Consumer problem. D) None. Show Answer Correct Answer: C) Producer-Consumer problem. 7. When a process is in a "Blocked" state waiting for some I/O service. When the service is completed, it goes to the ..... A) Terminated state. B) Suspended state. C) Running state. D) Ready state. Show Answer Correct Answer: D) Ready state. 8. Full form of CLI ..... A) Character Line Interface. B) Command Line Interface. C) All the above. D) None of the above. Show Answer Correct Answer: B) Command Line Interface. 9. Is the BIOS a firmware? A) Yes. B) No. C) Maybe?. D) None of the above. Show Answer Correct Answer: A) Yes. 10. What is the high speed memory between the main memory and the CPU called? A) Register. B) Cache. C) Storage. D) Virtual. Show Answer Correct Answer: B) Cache. 11. To protect a computer from virus, you should install ..... in your computer. A) Backup wizard. B) Disk cleanup. C) Antivirus. D) Disk Defragmenter. Show Answer Correct Answer: C) Antivirus. 12. What type of operating system is Windows 10? A) Single-user OS. B) Multi-user OS. C) All the above. D) None of the above. Show Answer Correct Answer: A) Single-user OS. 13. Displays a list of installed program, which a user can start or use A) My Picture. B) All Programs. C) My Documents. D) None of the above. Show Answer Correct Answer: B) All Programs. 14. Which one is not an operating system? A) IOX. B) Windows. C) Android. D) Poloroid. Show Answer Correct Answer: D) Poloroid. 15. File management shows a list of (a) A) A. files and folder. B) Chats and contacts. C) Photos and videos. D) None of the above. Show Answer Correct Answer: A) A. files and folder. 16. Second step in running and preparing batch jobs is to A) Wait in the queue. B) Store output. C) Write on printed sheets. D) Verify the work. Show Answer Correct Answer: D) Verify the work. 17. Which command is used to display the unix version A) Uname-r. B) UNAME-N. C) Uname-t. D) Kernel. Show Answer Correct Answer: D) Kernel. 18. What is the maximum number of characters allowed in a file name in MS-DOS (excluding the extension)? A) 8. B) 16. C) 32. D) 255. Show Answer Correct Answer: A) 8. 19. What is the purpose of the BIOS (Basic Input/Output System) in a simple operating system? A) To manage the system's hardware components. B) To perform calculations for applications. C) To manage file storage and retrieval. D) To provide network services to applications. Show Answer Correct Answer: A) To manage the system's hardware components. 20. ..... displays current date and time, volume button and information about computer setting. A) Show desktop button. B) Notifications Area. C) Quick Launch. D) Start button. Show Answer Correct Answer: B) Notifications Area. 21. Process is A) Program in High level language kept on disk. B) Contents of main memory. C) A program in execution. D) A job in secondary memory. Show Answer Correct Answer: C) A program in execution. 22. A process is a A) Passive Entity. B) Active Entity. C) All the above. D) None of the above. Show Answer Correct Answer: B) Active Entity. 23. Four jobs to be executed on a single processor system arrive at time 0 in the order A, B, C, D. Their burst CPU time requirements are 4, 1, 8, 1 time units respectively. The completion time of A under round robin scheduling with time slice of one time unit is A) 10. B) 4. C) 8. D) 9. Show Answer Correct Answer: D) 9. 24. SJF is short for A) Shortest Job First. B) Software Job First. C) System Job First. D) Shortest Job Final. Show Answer Correct Answer: A) Shortest Job First. 25. What is the primary role of a job scheduler in an operating system? A) To manage CPU scheduling. B) To allocate memory to processes. C) To load processes into memory for execution. D) To handle I/O operations. Show Answer Correct Answer: C) To load processes into memory for execution. 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