This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Computer Science > Operating System > Class 7 Computer Science Chapter 2 Operating System – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Computer Science Chapter 2 Operating System Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many applications can be processed by the CPU at a time? A) 1. B) 2. C) Several. D) 3. Show Answer Correct Answer: A) 1. 2. The common name for the crime of stealing passwords is A) Spoofing. B) Mocking. C) Jacking. D) Identity theft. Show Answer Correct Answer: A) Spoofing. 3. How would we define a hierarchical file system as used by an operating system? A) As a tree structure with a root and branches or directories that lead to other files. B) Sorted in alphabetical order using an array of device names. C) Organised in date order according to when each file was created. D) Multiple folders in system. Show Answer Correct Answer: A) As a tree structure with a root and branches or directories that lead to other files. 4. A Distributed computing environment contains a single node? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. How many abstraction layers are there? A) 5. B) 100. C) 8. D) 7. Show Answer Correct Answer: D) 7. 6. Which mobile operating system feature helps you avoid accidentally placing a call or taking a picture? A) Virtual personal assistant. B) Pinch gesture. C) Dock. D) Lock screen. Show Answer Correct Answer: D) Lock screen. 7. Consider the reference string:1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5.In a memory of size 3-page frames what is the number of page faults, if the pages are accessed in the order they appear in the reference string? A) 10. B) 9. C) 8. D) 11. Show Answer Correct Answer: B) 9. 8. Steve Jobs is the founder of Microsoft corporation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. What is the main purpose of memory management in an OS? A) Control User Access. B) Allocate Memory to Processes. C) Track CPU Usage. D) Manage Device Drivers. Show Answer Correct Answer: B) Allocate Memory to Processes. 10. Which of the following is a feature of a "real-time" operating system? A) It provides a GUI for users to interact with. B) It processes tasks immediately and guarantees timing constraints. C) It only supports one process at a time. D) It uses batch processing to handle tasks sequentially. Show Answer Correct Answer: B) It processes tasks immediately and guarantees timing constraints. 11. It is intended for a small office with limited number of user A) Server the. B) Network OS. C) Desktop OS. D) Desktop Computer. Show Answer Correct Answer: C) Desktop OS. 12. The image or picture that appears in the background of the desktop is called A) Desktop background. B) Desktop front. C) Desktop. D) None of the above. Show Answer Correct Answer: A) Desktop background. 13. To run a program, the computer must copy the program from secondary storage into? A) SSD. B) ROM. C) RAM. D) Way. Show Answer Correct Answer: C) RAM. 14. What does the Principle of Least Privilege (PoLP) entail? A) Users and applications should only have the permissions necessary to perform their tasks. B) Users should have access to all system resources. C) Applications should run with maximum privileges. D) Users should be allowed to change system settings. Show Answer Correct Answer: A) Users and applications should only have the permissions necessary to perform their tasks. 15. Which button shows the window to be in Task Bar? A) Minimize. B) Maximize. C) Restore. D) Control Buttons. Show Answer Correct Answer: A) Minimize. 16. Make the computer system convenient for users, the operating system provides a uniform, logical view of information storage. A) Process Management. B) Memory Management. C) Mass Strorage Management. D) File-System Management. Show Answer Correct Answer: D) File-System Management. 17. Who developed Windows operating system? A) Google. B) Microsoft. C) Apple. D) None of the above. Show Answer Correct Answer: B) Microsoft. 18. What is this part called? Written as 1 in blue. A) Time and Date. B) Icons. C) Start Button. D) Taskbar. Show Answer Correct Answer: A) Time and Date. 19. Ubuntu Linux is an example of a A) Word Processor. B) Open Source Operating System. C) Application. D) Game. Show Answer Correct Answer: B) Open Source Operating System. 20. In which one of the following page replacement algorithms it is possible for the page fault rate to increase even when the number of allocated frames increases? A) FIFO. B) MRU. C) OPR. D) LRU. Show Answer Correct Answer: A) FIFO. 21. An increase in a computer's RAM leads to a typical improvement in performance because: A) Fewer segmentation faults occur. B) A larger RAM is faster. C) Fewer page faults occur. D) Virtual memory increases. Show Answer Correct Answer: C) Fewer page faults occur. 22. What is the focus of Data Centred Architecture? A) Central management of application logic. B) Central management and utilization of data. C) Event-driven interactions. D) Decoupling of components. Show Answer Correct Answer: B) Central management and utilization of data. 23. Bootstrap Program is loaded at power-up or reboot A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. By using ..... you can customize the way Windows look and work! A) My Documents. B) Task Bar. C) Control Panel. D) Start Menu. Show Answer Correct Answer: C) Control Panel. 25. F1:-TLB is a Data structureF2:-Page Table is Hardware A) F1 is true but F2 is false. B) F2 is true but F1 is false. C) Both are true. D) Both are false. Show Answer Correct Answer: D) Both are false. 26. The operating systems ability to provide read/write access to files A) Memory Management. B) File Management. C) User Management. D) Peripheral Management. Show Answer Correct Answer: B) File Management. 27. What is a CPU measured in? A) Feet and inches. B) Number of instructions per second. C) Bytes. D) Latency. Show Answer Correct Answer: B) Number of instructions per second. 28. Desktop is the first screen that appears after starting the A) Computer. B) Files. C) Folder. D) None of the above. Show Answer Correct Answer: A) Computer. 29. Which of the following Windows do not have Start button? A) Windows Vista. B) Windows 7. C) Windows 8. D) None of these. Show Answer Correct Answer: C) Windows 8. 30. Which of the following is a set of programs containing instructions that coordinate all the activities among computer hardware resources? A) Operating System. B) Management System. C) Disk Base System. D) Boot System. Show Answer Correct Answer: A) Operating System. 31. Small picture on the desktop are known as A) Icon. B) Folder. C) All the above. D) None of the above. Show Answer Correct Answer: A) Icon. 32. Under multiprogramming, turnaround time for short jobs is usually ..... and that for long jobs is slightly ..... A) Shortened; Lengthened. B) Shortened; Shortened. C) Lengthened; Shortened. D) Shortened; Unchanged. Show Answer Correct Answer: A) Shortened; Lengthened. 33. Lubuntu is ..... A) A C compiler. B) A version of the Linux kernel. C) A distribution of the Linux OS. D) None of the baove. Show Answer Correct Answer: C) A distribution of the Linux OS. 34. What requires text command to interact with the computer A) Graphical user interface. B) Microsoft. C) Character user interface. D) Multi user operating system. Show Answer Correct Answer: C) Character user interface. 35. What type of operating system does not interact directly with the computer? A) Multi-User OS. B) Real-time. C) Network OS. D) Batch OS. Show Answer Correct Answer: D) Batch OS. 36. Fill in the blank ..... W ..... L ..... P ..... E R A) WALLPAPER. B) Wllaperpa. C) WALLPAPERS. D) None of the above. Show Answer Correct Answer: A) WALLPAPER. 37. The long bar at the bottom of the desktop screen is called the? A) Icons. B) Search box. C) Taskbar. D) Start menu. Show Answer Correct Answer: C) Taskbar. 38. Semaphores are implemented in the machine independent code of the ..... A) Micro kernel. B) Kernel. C) Bash shell. D) Shell. Show Answer Correct Answer: A) Micro kernel. 39. An operating system is ..... Responsible for common tasks. Controls HardwareManages and allocates resources and ..... A) Who needs an operating system !!?!?!. B) A. C) Has an interface. D) Makes my computer faster. Show Answer Correct Answer: C) Has an interface. 40. File extensions are used in order to A) Identify the file type. B) Ensure the filename is not lost. C) Name the file. D) Identify the file. Show Answer Correct Answer: A) Identify the file type. 41. Which one of the following is keyboard shortcut to open Paint in Microsoft Windows? A) Paintexe. B) Paint.exe. C) Mspaint. D) Paint. Show Answer Correct Answer: C) Mspaint. 42. It is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. A) MAC OS. B) Linux. C) Windows. D) IOS. Show Answer Correct Answer: D) IOS. 43. A computer program that operates or controls a particular type of device that is attached to a computer. A) Intermediate Code. B) Devices Drivers. C) BIOS. D) Virtual Machine. Show Answer Correct Answer: B) Devices Drivers. 44. Which system call helps in sending termination signal A) Kill(). B) Fork(). C) Time(). D) Chmod(). Show Answer Correct Answer: A) Kill(). 45. What does the term 'thrashing' refer to in operating systems? A) Excessive context switching. B) High page fault rate leading to low CPU utilization. C) Overloading the CPU with processes. D) Inefficient memory allocation. Show Answer Correct Answer: B) High page fault rate leading to low CPU utilization. 46. How many sections are there on taskbar? A) 3. B) 2. C) 1. D) None of the above. Show Answer Correct Answer: A) 3. 47. Processes have ..... A) 5 states. B) 3 states. C) 4 states. D) 2 states. Show Answer Correct Answer: B) 3 states. 48. What is Attribute-Based Access Control (ABAC)? A) Access is granted based on user roles. B) Enforces strict access rules defined by the OS. C) Uses dynamic attributes to grant or deny access. D) Allows resource owners to define access. Show Answer Correct Answer: C) Uses dynamic attributes to grant or deny access. 49. Which one of the following is the extension of the archive file A) Zip. B) Bat. C) MPP. D) Exe. Show Answer Correct Answer: A) Zip. 50. UEFI stands for Unified Extensible Firmware Interface. It does the same job as a BIOS, but with one basic difference:it stores all data about initialization and startup in an.efi file, instead of storing it on the firmware. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 51. To select an adjacent item, hold down the ..... key. A) Shift. B) Ctrl. C) Alt. D) None of the above. Show Answer Correct Answer: A) Shift. 52. ..... means a person can change and read the programming code. A) Open-source software. B) Closed-source software. C) Both a and b. D) None of them. Show Answer Correct Answer: A) Open-source software. 53. Which of the following options is not a feature of the Windows built-in Sound Recorder and media player? A) A) Sound Recorder allows users to record audio using a microphone. B) B) Windows Media Player supports the playback of videos and music files. C) C) The volume control in Windows adjusts the system's output audio for individual applications. D) Sound Recorder in Windows automatically applies noise filtering to recorded audio. Show Answer Correct Answer: D) Sound Recorder in Windows automatically applies noise filtering to recorded audio. 54. One can perform multiple tasks with the help of ..... A) Multitasking operating system. B) Multi-user operating system. C) Single-user operating system. D) RTO. Show Answer Correct Answer: A) Multitasking operating system. 55. How does an operating system manage multiple print requests from different users? A) By using caching. B) By using swapping. C) By using paging. D) By using spooling. Show Answer Correct Answer: D) By using spooling. 56. Which of this is not the part of OS? A) File manager. B) Kernel. C) Device drivers. D) User's interface. Show Answer Correct Answer: A) File manager. 57. What is the file extension for wordpad? A) .wpd. B) .txt. C) .doc. D) .rtf. Show Answer Correct Answer: D) .rtf. 58. What is User's Interface? A) The space between user and computer. B) The space between computer and software. C) The space between computer and user's actions. D) The space between me and you. Show Answer Correct Answer: C) The space between computer and user's actions. 59. If one logs into the system as a guest user, the OS has to detect it and accordingly allow different resources to be accessed with permitted/limited privileges. This is called: A) Access Control. B) Synchronization. C) Security Assessment. D) Security management. Show Answer Correct Answer: A) Access Control. 60. Which type of operating system allows multiple users to run programs at the same time? A) Multi-user. B) Multithreading. C) Multiprocessing. D) Multitasking. Show Answer Correct Answer: A) Multi-user. ← 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 7Class 7 Computer Science Chapter 2 Operating System Quiz 8Class 7 Computer Science Chapter 2 Operating System Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books