port numbers
RARP (Reverse Address Resolution Protocol) maps layer 2 addresses to layer 3 addresses. ARP (Address Resolution Protocol) maps layer 3 addresses to layer 2 addresses.
Port and memory addresses are expressed as Hexadecimal Numbers
Network layer
The layer 2 devices use the data link layer addresses.
Network layer
They operate at Layer 2 of the OSI model and forward data to the port on which the destination system is connected by using MAC addresses of connected devices.
Layer 3 network addresses are logical addresses and can be easily changed by software.
Not possible, both are numbers.
Addresses 80 - 87H are assigned to the P0 port
Data Link Layer
transport layer