{"id":721157,"date":"2024-06-12T15:53:22","date_gmt":"2024-06-12T10:23:22","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=721157"},"modified":"2024-06-12T15:53:22","modified_gmt":"2024-06-12T10:23:22","slug":"operating-system-mcq-questions-and-answers","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/mcqs\/class-12-computer-science-operating-system\/","title":{"rendered":"Operating System MCQ Questions and Answers"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/mcqs\/class-12-computer-science-operating-system\/#What_is_Operating_System\" title=\"What is Operating System?\">What is Operating System?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/mcqs\/class-12-computer-science-operating-system\/#Operating_System_MCQ_with_Answers\" title=\"Operating System MCQ with Answers\">Operating System MCQ with Answers<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/mcqs\/class-12-computer-science-operating-system\/#Operating_system_MCQ_for_Competitive_Exams\" title=\"Operating system MCQ for Competitive Exams\">Operating system MCQ for Competitive Exams<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/mcqs\/class-12-computer-science-operating-system\/#Operating_system_MCQ_for_Placement\" title=\"Operating system MCQ for Placement\">Operating system MCQ for Placement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/infinitylearn.com\/surge\/mcqs\/class-12-computer-science-operating-system\/#Operating_system_MCQ_for_Gate_Exam\" title=\"Operating system MCQ for Gate Exam\">Operating system MCQ for Gate Exam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/mcqs\/class-12-computer-science-operating-system\/#20_Operating_System_MCQ_for_GATE_Exam_with_Answers\" title=\"20 Operating System MCQ for GATE Exam with Answers\">20 Operating System MCQ for GATE Exam with Answers<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Operating_System\"><\/span>What is Operating System?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>An <strong>operating system<\/strong> (OS) is software that controls a computer&#8217;s <strong>hardware<\/strong> and <strong>software<\/strong>. It acts as a go-between for the computer hardware and the user, helping programs run smoothly. The OS manages things like memory, CPU time, and input\/output devices, making sure multiple programs can run at the same time without problems. It also provides a user interface, like a graphical interface (GUI) or command-line interface (CLI), so you can interact with the computer and its applications.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Operating_System_MCQ_with_Answers\"><\/span>Operating System MCQ with Answers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The operating system (OS) is a crucial component of a <strong>computer system<\/strong>, playing a vital role in managing hardware resources and providing a platform for running applications. To assess your understanding of the OS, we have prepared a comprehensive set of <strong>operating system MCQ with answers<\/strong>. These <strong>operating system MCQ questions<\/strong> cover various aspects of operating systems, including their types, functions, and features. By answering these <strong>operating system MCQ<\/strong>, you can test your knowledge and gain a deeper understanding of the OS.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Operating_system_MCQ_for_Competitive_Exams\"><\/span>Operating system MCQ for Competitive Exams<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Preparing for competitive exams can be challenging, especially when it comes to technical subjects like Operating Systems. Multiple Choice Questions (MCQs) are a common format in these exams, testing your understanding and knowledge of key concepts Here are the <strong>operating system MCQ for competitive exams<\/strong>:<\/p>\n<p><strong>1. What is an operating system?<\/strong><\/p>\n<p>A) A collection of software that manages computer hardware<\/p>\n<p>B) A type of hardware<\/p>\n<p>C) A programming language<\/p>\n<p>D) None of the above<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>2. Which of the following is not an operating system?<\/strong><\/p>\n<p>A) Windows<\/p>\n<p>B) Linux<\/p>\n<p>C) Oracle<\/p>\n<p>D) MacOS<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>3. Which operating system is developed by Microsoft?<\/strong><\/p>\n<p>A) Windows<\/p>\n<p>B) Linux<\/p>\n<p>C) Unix<\/p>\n<p>D) MacOS<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>4. What is the main function of an operating system?<\/strong><\/p>\n<p>A) To provide a user interface<\/p>\n<p>B) To manage hardware resources<\/p>\n<p>C) To enable software applications to interact with hardware<\/p>\n<p>D) All of the above<\/p>\n<p><strong>Answer:<\/strong> D<\/p>\n<p><strong>5. Which of the following is an open-source operating system?<\/strong><\/p>\n<p>A) Windows<\/p>\n<p>B) Linux<\/p>\n<p>C) MacOS<\/p>\n<p>D) DOS<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>6. What does GUI stand for in operating systems?<\/strong><\/p>\n<p>A) Graphical User Interaction<\/p>\n<p>B) Graphical User Interface<\/p>\n<p>C) Graphical Unified Interface<\/p>\n<p>D) General User Interface<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>7. Which of the following is a real-time operating system?<\/strong><\/p>\n<p>A) Windows<\/p>\n<p>B) Unix<\/p>\n<p>C) RTOS<\/p>\n<p>D) Linux<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>8. What is multitasking in operating systems?<\/strong><\/p>\n<p>A) Running multiple processes simultaneously<\/p>\n<p>B) Running a single process<\/p>\n<p>C) Using multiple processors<\/p>\n<p>D) None of the above<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>9. What is the purpose of the kernel in an operating system?<\/strong><\/p>\n<p>A) To manage the system\u2019s resources<\/p>\n<p>B) To provide a user interface<\/p>\n<p>C) To manage files<\/p>\n<p>D) To manage the network<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>10. Which of the following is not a function of an operating system?<\/strong><\/p>\n<p>A) Memory management<\/p>\n<p>B) Processor management<\/p>\n<p>C) Application development<\/p>\n<p>D) Device management<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>11. Which command is used to display the version of the operating system in Unix\/Linux?<\/strong><\/p>\n<p>A) version<\/p>\n<p>B) uname -r<\/p>\n<p>C) ver<\/p>\n<p>D) osversion<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>12. Which of the following is used to uniquely identify a process?<\/strong><\/p>\n<p>A) Process Control Block (PCB)<\/p>\n<p>B) Program Counter<\/p>\n<p>C) PID (Process Identifier)<\/p>\n<p>D) None of the above<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>13. Which operating system is known for its use in servers and mainframes?<\/strong><\/p>\n<p>A) Windows<\/p>\n<p>B) MacOS<\/p>\n<p>C) Unix<\/p>\n<p>D) Android<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>14. What is a deadlock in operating systems?<\/strong><\/p>\n<p>A) A situation where a process is stuck in an infinite loop<\/p>\n<p>B) A situation where two or more processes are unable to proceed because each is waiting for the other to release a resource<\/p>\n<p>C) A situation where the operating system crashes<\/p>\n<p>D) None of the above<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>15. Which file system is used by Windows operating systems?<\/strong><\/p>\n<p>A) NTFS<\/p>\n<p>B) ext4<\/p>\n<p>C) HFS+<\/p>\n<p>D) FAT32<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>16. What is the full form of BIOS?<\/strong><\/p>\n<p>A) Basic Input Output System<\/p>\n<p>B) Binary Input Output System<\/p>\n<p>C) Basic Integrated Operating System<\/p>\n<p>D) Binary Integrated Operating System<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>17. Which operating system is primarily used for mobile devices?<\/strong><\/p>\n<p>A) Windows<\/p>\n<p>B) Linux<\/p>\n<p>C) Android<\/p>\n<p>D) Unix<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>18. What does the term \u2018booting\u2019 refer to in operating systems?<\/strong><\/p>\n<p>A) Shutting down the system<\/p>\n<p>B) Restarting the system<\/p>\n<p>C) Loading the operating system into the computer&#8217;s main memory<\/p>\n<p>D) Installing new software<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>19. Which of the following is a disk-based operating system?<\/strong><\/p>\n<p>A) DOS<\/p>\n<p>B) Windows<\/p>\n<p>C) Unix<\/p>\n<p>D) Linux<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>20. What is virtual memory in an operating system?<\/strong><\/p>\n<p>A) Physical memory that is temporarily used for storage<\/p>\n<p>B) A technique that allows the execution of processes that may not be completely in memory<\/p>\n<p>C) Memory used for caching purposes<\/p>\n<p>D) None of the above<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Operating_system_MCQ_for_Placement\"><\/span>Operating system MCQ for Placement<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Preparing for placement exams can be a crucial step in landing your dream job, especially when it comes to technical roles. Understanding Operating Systems is essential as they form the backbone of computer systems. <strong>Operating system MCQ questions<\/strong> are often used in placement exams to test your knowledge of these critical concepts.<\/p>\n<div class=\"flex flex-grow flex-col max-w-full AIPRM__conversation__response\">\n<div class=\"min-h-[20px] text-message flex flex-col items-start whitespace-pre-wrap break-words [.text-message+&amp;]:mt-5 juice:w-full juice:items-end overflow-x-auto gap-2\" dir=\"auto\" data-message-author-role=\"assistant\" data-message-id=\"8826dcdb-6496-4f37-8b51-b62b571ffd00\">\n<div class=\"flex w-full flex-col gap-1 juice:empty:hidden juice:first:pt-[3px]\">\n<div class=\"markdown prose w-full break-words dark:prose-invert dark\">\n<p><strong>1. Which of the following is a function of an operating system?<\/strong><\/p>\n<p>A) Word processing<\/p>\n<p>B) Spreadsheet calculations<\/p>\n<p>C) Managing hardware resources<\/p>\n<p>D) Web browsing<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>2. What type of operating system is Linux?<\/strong><\/p>\n<p>A) Proprietary<\/p>\n<p>B) Open-source<\/p>\n<p>C) Real-time<\/p>\n<p>D) Single-user<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>3. Which part of the operating system is responsible for managing memory?<\/strong><\/p>\n<p>A) File system<\/p>\n<p>B) Kernel<\/p>\n<p>C) User interface<\/p>\n<p>D) Device drivers<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>4. What is the main purpose of an operating system?<\/strong><\/p>\n<p>A) To edit documents<\/p>\n<p>B) To manage system resources<\/p>\n<p>C) To play games<\/p>\n<p>D) To create presentations<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>5. Which of the following is a mobile operating system?<\/strong><\/p>\n<p>A) Windows 10<\/p>\n<p>B) Ubuntu<\/p>\n<p>C) Android<\/p>\n<p>D) macOS<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>6. What does CPU scheduling involve?<\/strong><\/p>\n<p>A) Managing disk space<\/p>\n<p>B) Allocating processor time to processes<\/p>\n<p>C) Managing network connections<\/p>\n<p>D) Handling user inputs<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>7. Which command in Unix\/Linux is used to change file permissions?<\/strong><\/p>\n<p>A) chmod<\/p>\n<p>B) chperm<\/p>\n<p>C) permchange<\/p>\n<p>D) filemod<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>8. What is the use of the &#8216;task manager&#8217; in Windows?<\/strong><\/p>\n<p>A) To view and manage running applications and processes<\/p>\n<p>B) To edit system files<\/p>\n<p>C) To install new software<\/p>\n<p>D) To defragment the hard drive<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>9. What does the term &#8216;bootloader&#8217; refer to?<\/strong><\/p>\n<p>A) A program that starts the operating system<\/p>\n<p>B) A type of software application<\/p>\n<p>C) A hardware component<\/p>\n<p>D) A memory management technique<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>10. Which file system is commonly used by MacOS?<\/strong><\/p>\n<p>A) NTFS<\/p>\n<p>B) ext4<\/p>\n<p>C) HFS+<\/p>\n<p>D) FAT32<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>11. What is a process in an operating system?<\/strong><\/p>\n<p>A) A program in execution<\/p>\n<p>B) A type of hardware<\/p>\n<p>C) A user command<\/p>\n<p>D) A system call<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>12. Which of the following is used for inter-process communication?<\/strong><\/p>\n<p>A) Threads<\/p>\n<p>B) Sockets<\/p>\n<p>C) Memory allocation<\/p>\n<p>D) Semaphores<\/p>\n<p><strong>Answer:<\/strong> D<\/p>\n<p><strong>13. What is the role of device drivers?<\/strong><\/p>\n<p>A) To manage memory<\/p>\n<p>B) To facilitate communication between the operating system and hardware devices<\/p>\n<p>C) To run user applications<\/p>\n<p>D) To schedule processes<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>14. What is swapping in operating systems?<\/strong><\/p>\n<p>A) Exchanging data between different devices<\/p>\n<p>B) Moving processes in and out of the main memory<\/p>\n<p>C) Defragmenting the hard drive<\/p>\n<p>D) Allocating CPU time to processes<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>15. What is a shell in an operating system?<\/strong><\/p>\n<p>A) The core part of the OS<\/p>\n<p>B) The command-line interface for interacting with the OS<\/p>\n<p>C) A type of file system<\/p>\n<p>D) A network protocol<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>16. Which of the following is a system call?<\/strong><\/p>\n<p>A) open()<\/p>\n<p>B) create()<\/p>\n<p>C) start()<\/p>\n<p>D) begin()<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>17. What is the purpose of a page table in virtual memory management?<\/strong><\/p>\n<p>A) To map logical addresses to physical addresses<\/p>\n<p>B) To manage file storage<\/p>\n<p>C) To schedule processes<\/p>\n<p>D) To handle network connections<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>18. What is the function of a real-time operating system (RTOS)?<\/strong><\/p>\n<p>A) To provide a graphical user interface<\/p>\n<p>B) To ensure timely processing of tasks<\/p>\n<p>C) To manage user accounts<\/p>\n<p>D) To handle batch processing<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>19. What is a thread in the context of operating systems?<\/strong><\/p>\n<p>A) A single sequence of executable instructions<\/p>\n<p>B) A type of hardware<\/p>\n<p>C) A memory management technique<\/p>\n<p>D) A user command<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>20. Which operating system is used for Apple\u2019s desktop and laptop computers?<\/strong><\/p>\n<p>A) Windows<\/p>\n<p>B) Linux<\/p>\n<p>C) Unix<\/p>\n<p>D) macOS<\/p>\n<p><strong>Answer:<\/strong> D<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"mt-1 flex gap-3 empty:hidden juice:-ml-3\">\n<div class=\"items-center justify-start rounded-xl p-1 flex\"><\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"Operating_system_MCQ_for_Gate_Exam\"><\/span>Operating system MCQ for Gate Exam<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3><span class=\"ez-toc-section\" id=\"20_Operating_System_MCQ_for_GATE_Exam_with_Answers\"><\/span>20 Operating System MCQ for GATE Exam with Answers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>1. Which of the following is not a function of an operating system?<\/strong><\/p>\n<p>A) Memory management<\/p>\n<p>B) Processor management<\/p>\n<p>C) Application development<\/p>\n<p>D) Device management<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>2. What is a process in an operating system?<\/strong><\/p>\n<p>A) A program in execution<\/p>\n<p>B) A type of hardware<\/p>\n<p>C) A command<\/p>\n<p>D) An operating system module<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>3. Which scheduling algorithm is non-preemptive?<\/strong><\/p>\n<p>A) Round Robin<\/p>\n<p>B) Shortest Job Next (SJN)<\/p>\n<p>C) Priority Scheduling<\/p>\n<p>D) Multilevel Queue Scheduling<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>4. What is the main advantage of a multiprogramming system?<\/strong><\/p>\n<p>A) Simplifies programming<\/p>\n<p>B) Increases CPU utilization<\/p>\n<p>C) Increases memory usage<\/p>\n<p>D) Reduces software costs<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>5. What does the term &#8216;context switch&#8217; mean?<\/strong><\/p>\n<p>A) Switching from one application to another<\/p>\n<p>B) Switching from one process to another<\/p>\n<p>C) Changing the operating system<\/p>\n<p>D) Changing the user interface<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>6. Which of the following is a characteristic of a real-time operating system?<\/strong><\/p>\n<p>A) High throughput<\/p>\n<p>B) Predictability<\/p>\n<p>C) High security<\/p>\n<p>D) Scalability<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>7. What is the function of the kernel in an operating system?<\/strong><\/p>\n<p>A) User interface management<\/p>\n<p>B) Hardware management<\/p>\n<p>C) Internet browsing<\/p>\n<p>D) Document editing<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>8. Which of the following is a type of system call in operating systems?<\/strong><\/p>\n<p>A) open()<\/p>\n<p>B) print()<\/p>\n<p>C) start()<\/p>\n<p>D) execute()<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>9. What is deadlock in operating systems?<\/strong><\/p>\n<p>A) A situation where a process waits indefinitely for a resource<\/p>\n<p>B) A situation where memory is insufficient<\/p>\n<p>C) A situation where the system crashes<\/p>\n<p>D) A situation where files cannot be opened<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>10. Which command in Unix is used to list files in a directory?<\/strong><\/p>\n<p>A) ls<\/p>\n<p>B) dir<\/p>\n<p>C) list<\/p>\n<p>D) show<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>11. What does FIFO stand for in the context of scheduling?<\/strong><\/p>\n<p>A) Fast In Fast Out<\/p>\n<p>B) First In First Out<\/p>\n<p>C) First In Fast Out<\/p>\n<p>D) First Input First Output<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>12. What is the purpose of the page table in an operating system?<\/strong><\/p>\n<p>A) To manage memory<\/p>\n<p>B) To map virtual addresses to physical addresses<\/p>\n<p>C) To schedule processes<\/p>\n<p>D) To manage files<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>13. Which operating system concept involves dividing the memory into fixed-sized blocks?<\/strong><\/p>\n<p>A) Paging<\/p>\n<p>B) Segmentation<\/p>\n<p>C) Fragmentation<\/p>\n<p>D) Swapping<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>14. What is the primary goal of time-sharing operating systems?<\/strong><\/p>\n<p>A) Minimize CPU usage<\/p>\n<p>B) Maximize user response time<\/p>\n<p>C) Maximize throughput<\/p>\n<p>D) Maximize memory usage<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>15. What does the command \u2018chmod\u2019 do in Unix\/Linux?<\/strong><\/p>\n<p>A) Change the owner of a file<\/p>\n<p>B) Change the permissions of a file<\/p>\n<p>C) Move a file<\/p>\n<p>D) Copy a file<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>16. In which of the following storage is data stored persistently?<\/strong><\/p>\n<p>A) RAM<\/p>\n<p>B) Cache<\/p>\n<p>C) Hard disk<\/p>\n<p>D) Register<\/p>\n<p><strong>Answer:<\/strong> C<\/p>\n<p><strong>17. What is thrashing in the context of operating systems?<\/strong><\/p>\n<p>A) A situation where the system spends more time swapping pages than executing instructions<\/p>\n<p>B) A situation where the system has insufficient memory<\/p>\n<p>C) A situation where files are lost<\/p>\n<p>D) A situation where processes run indefinitely<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>18. Which of the following is a non-preemptive scheduling algorithm?<\/strong><\/p>\n<p>A) Round Robin<\/p>\n<p>B) Shortest Job First (SJF)<\/p>\n<p>C) Multilevel Queue<\/p>\n<p>D) Priority Scheduling<\/p>\n<p><strong>Answer:<\/strong> B<\/p>\n<p><strong>19. What does DMA stand for?<\/strong><\/p>\n<p>A) Direct Memory Access<\/p>\n<p>B) Dynamic Memory Allocation<\/p>\n<p>C) Direct Module Access<\/p>\n<p>D) Dynamic Module Allocation<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p><strong>20. What is a semaphore in the context of operating systems?<\/strong><\/p>\n<p>A) A variable used to manage concurrent processes<\/p>\n<p>B) A type of scheduling algorithm<\/p>\n<p>C) A method of memory allocation<\/p>\n<p>D) A hardware device<\/p>\n<p><strong>Answer:<\/strong> A<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is Operating System? An operating system (OS) is software that controls a computer&#8217;s hardware and software. 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