Packets travel through networks
Networks use protocols to exchange data. A route moves information through intermediate devices; a hop is a step from one device to another. Latency is delay, not download speed. This simplified model only adds made-up one-way link delays; it does not simulate congestion, queueing, processing, retransmission or routing protocols.
Choose a path from A to D
The links have fictional one-way delays: A–B 14 ms, B–D 19 ms, A–C 11 ms, C–D 26 ms, B–C 7 ms.
Choose a route.
Internet or World Wide Web?
The Internet is the global network infrastructure. The Web is a service that uses it to access linked resources. Other Internet services include email and online games.
Download the Python route calculator →
These are teaching numbers, not claims about the performance of any real connection.
Independent TutorSyntax educational material, inspired by the wider UK computing curriculum. Not an official Ada, government or examination-board product.