📚 Physical Layer Protocols

📚 Overview

This article is about some general stuff that happens on the physical layer.

CSMA/CD =

• Carrier Sense - Who gets to talk? Wait for your turn
• Multiple Access - When you are done, you can immediately send another request. Like, to ask. a doctor check your nose after throat examination you don’t need another appointment, just ask right away.
• Collision Detection - NICs have a module that detect abnormal voltage (collision).

Domain - area in within which all devices hear or see everything (not necesarily respond).