Unit - IV File Concept: Access Methods, Directory Structure, File System Mounting, File Sharing, Protection, File System Structure, File System Implementation, Directory Implementation, Allocation Methods, Free space Management, Kernel IO Subsystems, Disk Structure, Disk Scheduling, Disk Management, Swap, Space Management. UNIT V Linux overview: Kernel Architecture, Process, memory, file and IO management, Interprocess communication and synchronization, Security. Windows XP: System architecture, system management mechanisms, process, thread, memory and file management, IO subsystem, Interprocess communication, Security.
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