Difference between ARP and RARP?

Difference between ARP and RARP.

The differences between ARP and RARP:

- Address Resolution Protocol is utilized for mapping IP network address to the hardware address that uses data link protocol. 
- Reverse Address Resolution Protocol is a protocol using which a physical machine in a LAN could request to find its IP address from ARP table or cache from a gateway server. 
- IP address of destination to physical address conversion is done by ARP, by broadcasting in LAN.
- Physical address of source to IP address conversion is done by RARP. 
- ARP associates 32 bit IP address with 48 bit physical address.
- Allowing a host to discover its internet address after knowing only its physical address is done by RARP