[Day 5] 5. Extra

Ethernet and Network Expansion

• Ethernet operates using collision detection and prevention mechanisms (CSMA/CD).
• As the number of devices on the network grows, switches are used to learn MAC addresses and forward frames efficiently.
• Routers introduced hierarchical addressing (IP addresses) to handle larger networks, splitting the address into a network and host part.
• OSI Model: The OSI reference model includes both the network layer (responsible for routing) and the transport layer (responsible for reliable communication).