Memory Management and Virtual Memory Questions

Comprehensive knowledge of memory management and virtual memory concepts used in modern operating systems. Candidates should be able to explain logical versus physical addressing, page tables including multilevel page tables, the translation lookaside buffer and its role, page faults and demand paging, swapping and working set concepts, and internal and external fragmentation. Also discuss segmentation and how it differs from paging, allocation strategies, memory protection and isolation, and performance trade offs such as page size, swap policy, and how to diagnose problems such as thrashing.