Operating System Structures and Fundamentals

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What is a Monolithic Kernel?

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A monolithic kernel is an operating system architecture where the kernel controls all aspects of the operating system's operation, including file management, memory management, and device management.

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What are the advantages of a Monolithic Kernel?

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Advantages include ease of design and execution, and faster performance due to all functions being implemented in the same address area.

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What are the disadvantages of a Monolithic Kernel?

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Disadvantages include interconnected services that can cause system failure if one malfunctions, and a lack of adaptability for launching new services.

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What is a Layered Structure in operating systems?

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A layered structure separates the OS into layers, with each layer having its own functionality, organized hierarchically from hardware to user interface.

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What are the advantages of a Layered Structure?

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Advantages include separation of work duties for each layer and simpler debugging.

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What are the disadvantages of a Layered Structure?

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Disadvantages include compromised performance due to layering and the need for careful design in constructing layers.

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What is a Micro-Kernel Structure?

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A micro-kernel structure is an OS architecture that minimizes the kernel by removing unnecessary components, relying on user applications for optional kernel functions.

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What are the advantages of a Micro-Kernel Structure?

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Advantages include portability across platforms, reliability and security due to isolation, and unaffected operation of the OS if a component fails.

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What are the disadvantages of a Micro-Kernel Structure?

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Disadvantages include decreased performance due to increased inter-module communication and complexity in system construction.

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What is an Exokernel?

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An Exokernel is an operating system designed to provide application-level management of hardware resources, allowing for application-specific customization.