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CCNA 200-125, ICND1, Sec. 3: Hubs, History, and Why Hubs Are History
- Hub
Also know as Repeater. regenerate electronic signal to send it further with strong one.
Located in Layer 1, collision domain made in process.
- Collision domain
The data will collide when host send data while other send as well
- CSMA/CD(Carrier Sense Multiple Access with Collision Detection)
Check weather someone send data or not to avoid collision. And wait for a second before check again.
- jam signal
saying that no one should send signal for this time
- backoff timer
after listening jam signal, they wait for milisecond and process CSMA/CD again.
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