This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Computer Science Chapter 2 Operating System – Quiz 15 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Computer Science Chapter 2 Operating System Quiz 15 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Semaphores are implemented in the machine independent code of the ..... A) Shell. B) Kernel. C) Micro kernel. D) Bash shell. Show Answer Correct Answer: C) Micro kernel. 2. An operating system is ..... Responsible for common tasks. Controls HardwareManages and allocates resources and ..... A) Makes my computer faster. B) Has an interface. C) Who needs an operating system !!?!?!. D) A. Show Answer Correct Answer: B) Has an interface. 3. File extensions are used in order to A) Name the file. B) Ensure the filename is not lost. C) Identify the file. D) Identify the file type. Show Answer Correct Answer: D) Identify the file type. 4. Which one of the following is keyboard shortcut to open Paint in Microsoft Windows? A) Paint. B) Mspaint. C) Paint.exe. D) Paintexe. Show Answer Correct Answer: B) Mspaint. 5. It is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. A) Windows. B) Linux. C) MAC OS. D) IOS. Show Answer Correct Answer: D) IOS. 6. A computer program that operates or controls a particular type of device that is attached to a computer. A) BIOS. B) Devices Drivers. C) Virtual Machine. D) Intermediate Code. Show Answer Correct Answer: B) Devices Drivers. 7. Which system call helps in sending termination signal A) Time(). B) Chmod(). C) Kill(). D) Fork(). Show Answer Correct Answer: C) Kill(). 8. 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. 9. How many sections are there on taskbar? A) 3. B) 2. C) 1. D) None of the above. Show Answer Correct Answer: A) 3. 10. Processes have ..... A) 2 states. B) 3 states. C) 4 states. D) 5 states. Show Answer Correct Answer: B) 3 states. 11. 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. 12. Which one of the following is the extension of the archive file A) Exe. B) MPP. C) Zip. D) Bat. Show Answer Correct Answer: C) Zip. 13. 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. 14. 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. 15. ..... 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. 16. 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. 17. One can perform multiple tasks with the help of ..... A) RTO. B) Single-user operating system. C) Multi-user operating system. D) Multitasking operating system. Show Answer Correct Answer: D) Multitasking operating system. 18. How does an operating system manage multiple print requests from different users? A) By using caching. B) By using spooling. C) By using swapping. D) By using paging. Show Answer Correct Answer: B) By using spooling. 19. Which of this is not the part of OS? A) Kernel. B) User's interface. C) Device drivers. D) File manager. Show Answer Correct Answer: D) File manager. 20. What is the file extension for wordpad? A) .rtf. B) .txt. C) .doc. D) .wpd. Show Answer Correct Answer: A) .rtf. 21. 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. 22. 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) Security Assessment. B) Access Control. C) Security management. D) Synchronization. Show Answer Correct Answer: B) Access Control. 23. Which type of operating system allows multiple users to run programs at the same time? A) Multiprocessing. B) Multitasking. C) Multi-user. D) Multithreading. Show Answer Correct Answer: C) Multi-user. 24. A ..... is a program object that prevents simultaneous access to a shared resource. A) Race Condition. B) Starvation. C) Mutual Exclusion. D) No Preemption. Show Answer Correct Answer: C) Mutual Exclusion. 25. Security management ..... A) Checks files can be written to and from the secondary storage. B) Sends data to and from IO devices. C) Puts data onto the right place in the primary storage. D) Schedules jobs for the CPU. E) Lets users access their personal accounts. Show Answer Correct Answer: E) Lets users access their personal accounts. ← PreviousNext →Related 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 8Class 7 Computer Science Chapter 2 Operating System Quiz 9Class 7 Computer Science Chapter 2 Operating System Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books