Notes on software development and lessons learned.
Connect the operating-system concepts from days 1–19 into a complete picture of processes, memory, files, protection, virtualization, and networks.
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Understand virtualization, virtual-machine architecture, hypervisors, hardware support, and their trade-offs.
Understand protection principles, domains, access-control matrices, ACLs, capabilities, and operating-system protection policies.
Learn how operating system security protects systems and user data, with examples of common threats, encryption, authentication, and app security.
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Understand I/O hardware, controllers, kernel subsystems, drivers, system calls, DMA, STREAMS, and I/O scheduling.
Understand how virtual memory provides an address space larger than physical memory, with examples of demand paging, page replacement, and copy-on-write.
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Understand deadlock, the Coffman conditions, and prevention, avoidance, detection, and recovery strategies with process and thread examples.
Explore practical synchronization scenarios, from classic problems to code examples, to prevent resource conflicts in concurrent environments and prepare for interviews.
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An operating system manages computer resources and connects users with hardware. Explore its core roles, structure, resource management, security, and virtualization.