Operating Systems Junior
Explain the concept of a deadlock in the context of operating systems.
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A deadlock is a type of error that happens when there is a mismatch in process priorities.
A deadlock occurs when a process terminates unexpectedly without releasing its resources.
A deadlock is a mechanism used to synchronize processes in an operating system.
A deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release resources.
What is a page fault?
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A page fault occurs when a program tries to access data that is not currently in physical memory.
A page fault happens when there is an error in the paging file of the operating system.
A page fault occurs when a program exceeds its allocated memory limit.
A page fault is a security mechanism to prevent unauthorized access to memory.
Explain the difference between preemptive and non-preemptive scheduling.
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Preemptive scheduling is a hardware feature, while non-preemptive scheduling is a software feature.
Preemptive scheduling allows the operating system to interrupt and switch processes, while non-preemptive scheduling does not.
Preemptive scheduling runs processes in the background, while non-preemptive scheduling runs processes in the foreground.
Preemptive scheduling is used only for high-priority tasks, while non-preemptive scheduling is for low-priority tasks.
What is a shell in the context of operating systems?
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A shell is a graphical user interface for designing software applications.
A shell is a command-line interpreter that provides an interface for users to interact with the operating system.
A shell is a type of hardware that connects peripherals to a computer.
A shell is an operating system feature that manages system memory.
Explain the concept of a semaphore.
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A semaphore is a signaling mechanism used to control access to shared resources in concurrent programming.
A semaphore is a hardware component that manages memory in a computer.
A semaphore is a programming language used for developing concurrent applications.
A semaphore is a function used to execute threads in a specific order.
What is a mutex, and why is it important in concurrent programming?
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A mutex is a synchronization primitive used to prevent multiple threads from accessing a shared resource concurrently.
A mutex is a type of variable used to store multiple values in concurrent programming.
A mutex is a function that schedules tasks in concurrent programming.
A mutex is an error-checking mechanism in concurrent programming.
Explain the concept of a file system and its components.
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A file system is a protocol used for transferring files over the internet.
A file system is the hardware component that stores data in a computer.
A file system is a software application used to edit text files.
A file system organizes and manages files on a storage device and includes components such as directories, files, and metadata.
What is virtual memory?
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Virtual memory is a type of hard disk used for temporary storage.
Virtual memory refers to the virtual storage space provided by cloud services.
Virtual memory is a memory management technique that provides an idealized abstraction of the storage resources.
Virtual memory is the physical RAM installed on the computer.
Explain the difference between a process and a thread.
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A process is an independent program in execution, while a thread is a lightweight process that exists within a process.
A process and a thread are the same, both being the smallest unit of execution in a system.
A process runs in the background, while a thread runs in the foreground.
A process is a function within a program, while a thread is a program that runs independently.
What is an operating system?
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An operating system manages hardware and software resources on a computer.
An operating system is a type of application software used for browsing the internet.
An operating system is a hardware component that speeds up computing tasks.
An operating system is used to write and compile code in various programming languages.