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Security Analysis and Hardening Security analysis and hardening involve assessing the vulnerabilities of an operating system environment and implementing measures to mitigate potential risks and threats. Key steps in security analysis and hardening include: Threat Modeling: Identifying potential threats and attack vectors that could compromise the security of the system. ..

File System Design and Implementation A file system is a method used by operating systems to store, retrieve, and organize files on a storage device such as a hard drive or SSD. Designing and implementing a file system involves several key components: Storage Management: Allocating and managing disk space efficiently, including techniques such as block allocation and free space ..

Implementation of Distributed Algorithms Distributed algorithms are designed to solve problems in distributed systems, where multiple nodes collaborate to achieve a common goal. One fundamental problem in distributed computing is distributed mutual exclusion, which ensures that only one process can access a shared resource at a time across multiple nodes. The implementation of distributed ..

Virtualization using QEMU or Docker Virtualization is the process of creating a virtual instance of a computer system or resource, allowing multiple operating systems or applications to run on the same physical hardware. QEMU (Quick Emulator) is an open-source emulator and virtualizer that can run operating systems for different architectures, including x86, ARM, and PowerPC, on a host mac..

Kernel Module Development for Linux Kernel modules are pieces of code that can be dynamically loaded and unloaded into the Linux kernel, providing additional functionality such as device drivers or system utilities. Developing kernel modules involves understanding the Linux kernel API and programming in C. Module development typically involves: Module Initialization: Modules mus..

File Systems File system structures (inode-based, log-structured) A file system organizes and manages data stored on a storage medium such as a hard disk or SSD. Two common structures are inode-based and log-structured file systems. Inode-based file systems use inodes to represent files and directories, storing metadata such as permissions, ownership, and pointers to data blocks. Log..