Networking Device and Protocols

1.3. Analogy

A hub is like a megaphone in a room: when one person speaks, the message is broadcast to everyone, whether they need to hear it or not. If multiple people speak at once, it creates confusion (collisions).

Types of Hubs

1. Passive Hubs:

Simply connect devices without amplifying signals.

Example: Basic wiring panels that split signals (rarely used today).

2. Active Hubs:

Amplify and regenerate signals, requiring power.

Example: Most Ethernet hubs (e.g., 10Base-T hubs).

3. Intelligent Hubs:

Include basic management features (e.g., monitoring traffic), though still simpler than switches.

Example: Managed hubs with diagnostic capabilities (less common).