Networks Lesson 1 Tool
Network Traffic Visualiser
Watch data packets travel in real time through a hub, a switch, and a router. See exactly why switches replaced hubs and why a router is needed to connect different networks.
Back to Networks Lesson 1Hub Mode
A hub broadcasts every frame to ALL connected devices, regardless of destination.
From:
To:
Speed:
Exam tip: A hub sends data to ALL devices - this is called broadcasting. Every device on the network receives every frame and must check if it is addressed to them. This wastes bandwidth and is a security risk because any device can intercept any frame.
Key distinction: A hub has no intelligence. It cannot read MAC addresses. It simply amplifies and repeats every signal on every port simultaneously. Hubs are now obsolete; they were almost entirely replaced by switches.
Packet Log
Choose source and destination, then press Send
Session Stats
Packets sent
0
Wasted deliveries
0
Bandwidth efficiency
-
On a 100-device hub network, sending one frame wastes 99 deliveries. Every device sees every frame, creating a security risk and degrading performance as traffic increases.