AP COMPUTER SCIENCE PRINCIPLES
TCP/IP Packet Routing Simulator
Interactive TCP/IP packet routing through a mesh network. Message splitting into numbered packets, multi-path independent routing, router failure fault tolerance, and reassembly at destination demonstrates the core architecture principles of the Internet.
AP COMPUTER SCIENCE PRINCIPLES
DNS Resolution Visualizer
Step-by-step DNS resolution animation showing the hierarchical lookup cascade from browser cache through recursive resolver, root server (13 clusters), TLD server (.com/.org), to authoritative nameserver, with caching and TTL concepts.