Which data structure is most suitable for implementing an LRU (Least Recently Used) cache?

Why is the space complexity of a recursive algorithm often higher than its iterative counterpart?

Where is a heap data structure typically used?

When does the Dijkstra's algorithm fail to find the shortest path in a graph?

When is the "thrashing" condition likely to occur in a system using virtual memory?

Why do modern operating systems use preemptive multitasking?

Which memory management scheme allows the physical address space of a process to be non-contiguous?

How to resolve the critical section problem in concurrent programming?