Operating Systems
Practice Operating Systems MCQs for Pakistan exams (CSS, FPSC, PPSC, NTS) — 101 practice questions with answers and explanations.
How to use these questions
Operating Systems on MCQsHub is 51 published questions for Pakistan exams such as CSS, FPSC, PPSC, and NTS. Open a question, choose an option, then read the explanation before you move on. The explanation names the correct choice and why the other options do not fit. Difficulty labels and topic tags show which idea to revise next, instead of repeating questions you already know.
Previous and next links on each question page stay inside Operating Systems, so you can work through the subject without returning to this index. Subtopics listed here belong to the same subject and narrow the set. When you want a clock and a score, start a timed quiz for Operating Systems. When you want a whole sitting rather than one question, open the past-paper library. New Operating Systems questions appear here after editorial review.
The list below starts with the newest Operating Systems questions. Later pages keep the same subject. Each title is a link to the full stem, the options, and the explanation.
1 2 3 Next All questions Full list of questions in this category for browsing.
The concept in which a user interface that allows users to interact with the operating system by issuing comma... Identify the correct definition of Shell. What term describes the following? a synchronization object that allows only one thread to access a resource a... In computer science, Mutex refers to which of the following? Select the correct name for: a memory management technique that divides memory into variable-sized segments ba... Which statement correctly explains Memory segmentation? Which concept is defined as follows: a CPU scheduling algorithm that assigns a fixed time slice to each proces... What is Round robin scheduling primarily used for? The following statement describes a specific concept. What is it called? a situation in which a process is per... Select the accurate description of Starvation. Which term refers to a technique that stores data temporarily for a device such as a printer so a slower devic... What does Spooling refer to? What is the name for the inefficient use of memory that occurs when free space is broken into small, scattered... Which of the following best describes Memory fragmentation? Identify the correct concept described as: a small program that loads the operating system into memory when a... Bootloader is best defined as which of the following? A programmatic way for an application to request a service from the operating system's kernel. What is this co... Choose the correct description of System call. Which of the following best names the concept in which an operating system that executes a series of jobs with... What is the function or purpose of Batch operating system? The concept in which an operating system designed to process data and respond to inputs within a strict, predi... Identify the correct definition of Real-time operating system (RTOS). What term describes the following? a process that has completed execution but still has an entry in the proces... In computer science, Zombie process refers to which of the following? Select the correct name for: the process of moving a process temporarily from main memory to disk to free up m... Which term refers to the core part of an operating system that manages hardware resources and communication be... What does Kernel refer to? What is the name for a program in execution, including its code, data, and current activity state? Which of the following best describes Process? Identify the correct concept described as: the smallest unit of execution within a process that can be schedul... Thread is best defined as which of the following? A situation where two or more processes are blocked forever, each waiting for a resource held by another. What... Choose the correct description of Deadlock. Which of the following best names the concept in which a memory management technique that gives an application... What is the function or purpose of Virtual memory? The concept in which a memory management scheme that eliminates external fragmentation by dividing memory into... Identify the correct definition of Paging. What term describes the following? the OS component that decides which process runs on the CPU at any given ti... In computer science, CPU scheduling refers to which of the following? Select the correct name for: the method an operating system uses to organize, name, and store files on storage... Which statement correctly explains File system? Which concept is defined as follows: the ability of an operating system to execute multiple tasks or processes... What is Multitasking primarily used for? The following statement describes a specific concept. What is it called? a synchronization variable used to co... Select the accurate description of Semaphore. Which term refers to a signal that pauses the CPU's current activity so it can handle an urgent event immediat... What does Interrupt refer to? What is the name for software that allows the operating system to communicate with a specific hardware device? Which of the following best describes Device driver? Identify the correct concept described as: the process of storing the state of a running process so another pr... Which scheduling algorithm always executes the process with the smallest burst time first?