This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Computer Science > Operating System > Class 7 Computer Science Chapter 2 Operating System – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Computer Science Chapter 2 Operating System Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is an example of emergency notification? A) Amber Alert. B) Domino's Pizza. C) Mom Missed Call. D) Doering Edmodo Post. Show Answer Correct Answer: A) Amber Alert. 2. To access the services of the operating system, the interface is provided by the ..... A) Library. B) System calls. C) Assembly instructions. D) API. Show Answer Correct Answer: B) System calls. 3. Copying information into faster storage system A) Caching. B) Main Memory. C) Secondary memory. D) Multiprogramming. Show Answer Correct Answer: A) Caching. 4. This piece of software is used to control hardware devices and allow an Operating System to make use of the hardware A) Device System. B) Device Driver. C) Device Management. D) Hardware Peripheral Device. Show Answer Correct Answer: B) Device Driver. 5. On which side of the Taskbar is Notification Area present? A) Left. B) Top. C) Bottom. D) Right. Show Answer Correct Answer: D) Right. 6. A computer uses ..... to hold files. A) Folder. B) Recycle bin. C) Applications. D) Icons. Show Answer Correct Answer: A) Folder. 7. The process of starting and restarting the Computer? A) Booting. B) Start. C) Restart. D) Activate. Show Answer Correct Answer: A) Booting. 8. Which of the following is the most recent version of Windows? A) Windows Vista. B) Windows XP. C) Windows 8. D) WIndows 11. Show Answer Correct Answer: D) WIndows 11. 9. Semaphores are used to solve A) Inter-process Communication. B) Mutual exclusion. C) Deadlock. D) Messaging. Show Answer Correct Answer: B) Mutual exclusion. 10. Which option is used to see the calender and digital clock.? A) Start menu. B) Time and Date. C) Taskbar. D) Start Icon. Show Answer Correct Answer: B) Time and Date. 11. ..... command is used to list contents of directories? A) Dir. B) Ls. C) Lp. D) Tar. Show Answer Correct Answer: B) Ls. 12. A type of operating system that allows only one user to work on it at a time. A) Operating system. B) Multi-user. C) Desktop. D) Single-user. Show Answer Correct Answer: D) Single-user. 13. In the index allocation scheme of blocks to a file, the maximum possible size of the file depends on A) The size of the blocks, and the size of the address of the blocks. B) The number of blocks used for the index, and the size of the blocks. C) The size of the blocks, the number of blocks used for the index, and the size of the address of the blocks. D) None. Show Answer Correct Answer: B) The number of blocks used for the index, and the size of the blocks. 14. 6) Which of the following algorithms is used to avoid deadlock? A) Banker's algorithm. B) Primality algorithms. C) Deadlock algorithm. D) Dynamic Programming algorithm. Show Answer Correct Answer: A) Banker's algorithm. 15. Which of these does not have an embedded system A) TV. B) They all have. C) Calculators. D) Traffic lights. Show Answer Correct Answer: B) They all have. 16. Requires regular maintenance and updates. A) ADVANTAGE. B) DISADVANTAGE. C) All the above. D) None of the above. Show Answer Correct Answer: B) DISADVANTAGE. 17. What is the purpose of RAID in mass storage systems? A) To increase data redundancy and performance. B) To reduce the cost of storage. C) To simplify file management. D) To enhance data encryption. Show Answer Correct Answer: A) To increase data redundancy and performance. 18. ..... appears on the bottom of the screen and by default remains visible when Windows is running. A) Recycle Bin. B) Control Panel. C) Task Bar. D) My Documents. Show Answer Correct Answer: C) Task Bar. 19. What is the use of directory structure in the operating system? A) The directory structure is used to solve the problem of the network connection in OS. B) It is used to store folders and files hierarchically. C) It is used to store the program in file format. D) None. Show Answer Correct Answer: B) It is used to store folders and files hierarchically. 20. Discuss some Security Features commonly found in operating systems. A) Biometric Authentication. B) User Authentication, Access Control Lists (ACLs), Encryption, Firewalls, Antivirus Software, Security Updates. C) Intrusion Detection Systems. D) Physical Security Measures. Show Answer Correct Answer: B) User Authentication, Access Control Lists (ACLs), Encryption, Firewalls, Antivirus Software, Security Updates. 21. Keep track of where a program is in the Fetch-Decode-Execute cycle is ..... A) Process Scheduling. B) CPU Management. C) CPU Scheduling. D) Process Management. Show Answer Correct Answer: D) Process Management. 22. True or False:We cannot retrieve files if they are deleted from the Recycle Bin A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. Below that does not include applications for browsing is A) Internet Explorer. B) Microsoft Office. C) Chrome. D) Mozilla. Show Answer Correct Answer: B) Microsoft Office. 24. Consider a system with byte-addressable memory, 32 bit logical addresses, 4 kilobyte page size and page table entries of 4 bytes each. The size of the page table in the system in megabytes is A) 16. B) 8. C) 2. D) 4. Show Answer Correct Answer: D) 4. 25. What is the most used operating system in the world? A) MacOS. B) Windows. C) Ubuntu. D) Linux. Show Answer Correct Answer: B) Windows. 26. What is the purpose of managing virtual memory in an operating system? A) To encrypt data. B) To prevent overwriting of programs. C) To install applications. D) To manage device drivers. Show Answer Correct Answer: B) To prevent overwriting of programs. 27. Supervisor program loads ..... programs from disk storage only as needed. A) Resident. B) Non-resident. C) Reserved. D) None of the above. Show Answer Correct Answer: B) Non-resident. 28. What is the primary function of a cache in computer systems? A) To store data permanently. B) To speed up data access by storing frequently used data. C) To manage memory allocation. D) To handle input/output operations. Show Answer Correct Answer: B) To speed up data access by storing frequently used data. 29. ..... are the small pictures on the desktop. A) Start button. B) Icons. C) All the above. D) None of the above. Show Answer Correct Answer: B) Icons. 30. Which one is a desktop operating system version? A) Windows 10. B) Desktop. C) G.U.I. D) None of the above. Show Answer Correct Answer: A) Windows 10. 31. What is the primary function of resource management in an operating system? A) To manage user profiles. B) To allocate resources like CPU and memory to processes. C) To provide a graphical user interface. D) To handle network connections. Show Answer Correct Answer: B) To allocate resources like CPU and memory to processes. 32. A situation where several processes access and manipulate the same data concurrently and the outcome of the execution depends on the particular order in which access takes place is called ..... A) Aging. B) Starvation. C) Data consistency. D) Race condition. Show Answer Correct Answer: D) Race condition. 33. A resident program ..... A) Remains in computer. B) Remains in memory. C) Remains in CPU. D) Remains on the desktop. Show Answer Correct Answer: B) Remains in memory. 34. Name one popular network operating system and its features. A) Windows Server. B) Android-primarily used for mobile devices. C) Linux Mint-known for its user-friendly interface. D) Mac OS X-designed for Apple hardware only. Show Answer Correct Answer: A) Windows Server. 35. Which os is used in air traffic control A) Network os. B) Real time. C) Distributed os. D) Batch os. Show Answer Correct Answer: B) Real time. 36. What is a program? A) A line of instruction. B) A list of instructions. C) A computer. D) None of the above. Show Answer Correct Answer: B) A list of instructions. 37. Consider the 3 processes, P1, P2 and P3 shown in the table.Process Arrival time Time Units Required P1 0 5 P2 1 7 P3 3 4The completion order of the 3 processes under the policies FCFS and RR2 (round robin scheduling with CPU quantum of 2 time units) are A) FCFS:P1, P2, P3 RR2:P1, P2, P3. B) FCFS:P1, P3, P2 RR2:P1, P3, P2. C) FCFS:P1, P3, P2 RR2:P1, P2, P3. D) FCFS:P1, P2, P3 RR2:P1, P3, P2. Show Answer Correct Answer: D) FCFS:P1, P2, P3 RR2:P1, P3, P2. 38. Which conditions must be satisfied to solve a critical section problem? A) Bounded Waiting. B) Progress. C) Mutual Exclusion. D) All of the above. Show Answer Correct Answer: D) All of the above. 39. Which is the first software that runs on a computer when it is switched on? A) BIOS. B) MBR. C) POST. D) I/O Controllers. Show Answer Correct Answer: A) BIOS. 40. Which of the following Windows dialog box features allows you to select several options? A) Drop-down lists. B) Radio buttons. C) Check boxes. D) Command buttons. Show Answer Correct Answer: C) Check boxes. 41. What defines a distributed system? A) A system that operates without any network connection. B) A system that only serves one user at a time. C) A single computer with multiple CPUs. D) A collection of autonomous computers linked by a network. Show Answer Correct Answer: D) A collection of autonomous computers linked by a network. 42. Security is provided through the server. A) ADVANTAGE. B) DISADVANTAGE. C) All the above. D) None of the above. Show Answer Correct Answer: A) ADVANTAGE. 43. Windows 7 and Windows Vista are examples of: A) IOS Phone. B) Android. C) Microsoft Windows. D) None of the above. Show Answer Correct Answer: C) Microsoft Windows. 44. Which type of User Interface is text-based and requires the user to write commands? A) Command Line Interface. B) Graphical User Interface. C) Menu Interface. D) No User Interface. Show Answer Correct Answer: A) Command Line Interface. 45. Which of the following is not a file system for a Linux operating system? A) GFS. B) NTFS. C) Ext4. D) Extirpation. Show Answer Correct Answer: B) NTFS. 46. The English Equivalent Term of "Mode" is A) Resource. B) Function. C) All the above. D) None of the above. Show Answer Correct Answer: B) Function. 47. A ..... is a picture, still are moving, that appears on the screen whenever the keyboard or mouse is not used for sometime. A) Screensaver. B) Screen boost. C) Big screen. D) None of the above. Show Answer Correct Answer: A) Screensaver. 48. PRESENTATION SOFTWARE:Example of these are Music Players, Video Players, and Games. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 49. Select an open source operating system A) Windows 10. B) IOS. C) Ubuntu Linux. D) Windows Phone. Show Answer Correct Answer: C) Ubuntu Linux. 50. Which task can you perform using the Settings in an operating system? A) Monitor CPU usage. B) Change the desktop wallpaper. C) Organize files. D) Open applications. Show Answer Correct Answer: B) Change the desktop wallpaper. 51. Which of the following are operating systems? A) Ubuntu. B) Kali. C) Windows 10. D) Windows Server. E) All of the above. Show Answer Correct Answer: E) All of the above. 52. Which of these take information from the Internet? A) Start menu. B) Task view. C) Start buttons. D) Live Tiles. Show Answer Correct Answer: D) Live Tiles. 53. To select non-consecutive file or folder press and hold down ..... key A) SHIFT key. B) CTRL key. C) ENTER. D) None of the above. Show Answer Correct Answer: B) CTRL key. 54. The part of the desktop display that functions to display several icons and computer applications that are active on the computer screen are called ..... A) Start button. B) Taskbar. C) Ikon. D) Wallpaper. Show Answer Correct Answer: B) Taskbar. 55. Which bar in Windows is used to show the current program? A) Tool bar. B) Task bar. C) Charm Bar. D) Title bar. Show Answer Correct Answer: B) Task bar. 56. A multi-user operating system allows many people to use the same computers at the same time or different times. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 57. In multiprogramming, programmer chooses programs which are suitable to run together from A) Job center. B) Job queue. C) Job terminal. D) Timed job. Show Answer Correct Answer: B) Job queue. 58. To refresh window, we use the shortcut A) Windows + R. B) Window + D. C) Ctrl + R. D) F5. Show Answer Correct Answer: D) F5. 59. If a program freezes, which OS feature can help you close it? A) Task Manager. B) User Interface. C) File System. D) Settings. Show Answer Correct Answer: A) Task Manager. 60. What is a network? A) The firewall protection on a computer. B) An internet connection. C) A group applications that work together. D) A group of computers that can share resources and information. Show Answer Correct Answer: D) A group of computers that can share resources and information. ← PreviousNext →Related QuizzesComputer Science QuizzesClass 7 QuizzesClass 7 Computer Science Chapter 2 Operating System Quiz 1Class 7 Computer Science Chapter 2 Operating System Quiz 2Class 7 Computer Science Chapter 2 Operating System Quiz 3Class 7 Computer Science Chapter 2 Operating System Quiz 4Class 7 Computer Science Chapter 2 Operating System Quiz 5Class 7 Computer Science Chapter 2 Operating System Quiz 6Class 7 Computer Science Chapter 2 Operating System Quiz 7Class 7 Computer Science Chapter 2 Operating System Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books