LRU Replacement Policy

What this operating-systems page replacement question tests

This question probes foundational knowledge of memory management and page replacement policies—a core topic in operating systems interview preparation. It asks you to define a widely-used eviction strategy and articulate the reasoning behind it.

Understanding page replacement policies is essential for anyone working on systems that manage virtual memory, caches, or any bounded resource where decisions about which data to keep and which to discard directly affect performance. Interviewers use questions like this to confirm you grasp both the terminology and the intuition that drives algorithm design in systems software.

• Virtual memory and page faults
• Cache replacement strategies
• Temporal locality and its role in memory access patterns
• Comparing different eviction heuristics