Operating Systems for MAANG Interviews

A book-shaped table of contents for operating systems at MAANG interview depth: foundations through processes, threads, concurrency, CPU scheduling, memory management, file systems, I/O, security & isolation, Linux internals, cloud/Kubernetes/observability, advanced kernel topics, and interview preparation — cross-linking existing sre/linux-networking, kubernetes-security, and patterns/concurrency notes instead of duplicating them.

2 — Paging

Covers pages, frames, page tables, multi-level paging, huge pages, and the translation lookaside buffer (TLB).

3 — Virtual Memory

Covers demand paging, page faults, swapping, working sets, and thrashing.

4 — Page Replacement

Covers FIFO, LRU, the clock algorithm, second chance, LFU, and Belady's anomaly.

5 — Memory Allocation

Covers the buddy allocator, the slab allocator, the heap, malloc(), and fragmentation.