🛰️ Ethernet

You can get different types of ethernet cables.

Cable Types

• Coaxial Cable
• Twisted Pair
  • Catgory 3 – Three twists per inch
  • Cat 5 – five twists per inch
  • Cat 5e – 5 twists per square inch; pairs also twisted together
  • Cat 6 – Six twist per inch, with improved insulation
  • RJ45 connector is used to connect the device.
• Fibre Optic

Characteristics:

• Routing IP packets
• Quality of Service classification
• Virtual LAN configurations
• Cheap

Data collisions can occur is two devices send at the same time especially if a hub is used.

CSMA/CD protects against this

CSMA/CD

Carrier Sense Multiple Access with Collision Detection

If data collision occurs senders back off and resend. It uses carrier-sensing to defer transmissions until no other stations are transmitting