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