Which two types of information are held in the mac address table ?

Destination IP addresses are part of Layer 3 information and are handled by routers, not typically stored in a Layer 2 switch's MAC address table.

Protocols (like TCP, UDP, IP) are higher-layer concepts and are not directly stored in a Layer 2 MAC address table.

The MAC address table maps MAC addresses to the specific physical switch port numbers where devices connected to those MAC addresses are located. This mapping enables the switch to efficiently forward frames only out of the relevant port, reducing unnecessary broadcasts.

The MAC address table explicitly stores the Media Access Control (MAC) addresses of devices that have sent frames through the switch. This learning process builds the table dynamically, associating MAC addresses with incoming interface ports.

Source IP addresses are Layer 3 information and are not stored in a Layer 2 MAC address table; the MAC address table focuses on source MAC addresses for learning purposes.