ip address assignment

Why is Localhost's IP address 127.0.0.1?
127 is the last network number (network number) in network class a with subnet mask 255.0.0.0. address 127.0.0.1 is the first transfer address in the subnet. address 127.0.0.0 is not used because this is the address of the wired network.
What is DHCP or dynamic host configuration protocol?
dhcp (dynamic host configuration protocol or dynamic host configuration protocol) is a protocol used to provide fast, automated and centralized management for ip address distribution in the network.