1. Unicast
   • Description: A packet is sent from a single source to a single destination.
   • Use Case: Commonly used for direct communication between two devices, such as client-server interactions.
2. Multicast
   • Description: A source packet is copied and sent to multiple specific destinations.
   • Use Case: Efficiently distributes data to multiple devices, such as in streaming media or group communication scenarios.
3. Broadcast
   • Description: A source packet is copied and sent to all nodes within the network.
   • Use Case: Used for network-wide communication, such as ARP requests, where the information needs to be accessible by all devices on the network.

These transmission methods determine how data is sent across a LAN, affecting the efficiency and reach of communication between devices.