Welcome to the Windows Operating System Interview Questions and Answers, Windows Operating System stands as a cornerstone of the digital world, serving as the backbone for countless personal computers, enterprise environments, and data centres worldwide. Its rich history and evolution, extensive array of versions and editions, and complex components have made it an integral part of our daily lives and workspaces. To navigate the intricacies of this operating system, whether for personal use, professional IT management, or cybersecurity, a deep understanding of its core elements is essential. This comprehensive set of interview questions and answers aims to guide you through the multifaceted landscape of Windows OS. Starting with a foundational overview of Windows and its historical journey, we delve into the various versions and editions that have shaped the way we interact with technology. Licensing and activation processes, which underpin the legal and functional aspects of Windows, are also explored. Moving on, we dissect the intricate components that form the very heart of Windows. We examine the Windows Kernel and System Services, the distinction between User Mode and Kernel Mode, the essence of Processes and Threads, and the pivotal role of Windows Services and Drivers in ensuring seamless operations. Windows is renowned for its robust and versatile file systems, and in this collection, we explore the intricacies of NTFS, FAT, and ReFS. We also delve into the nuances of file and directory management, file permissions, security, data compression, and encryption. The Windows Registry is a critical aspect of the OS, acting as its centralized database for system and application settings. In this guide, we take a deep dive into the structure and hives of the registry, understanding how to work with registry keys and values, and its role in managing system configuration

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