Rip is a Distance Vector protocol and use HOP Counts with a maximum of 15 and 16 is considerate to be infinite .
RIP is an IGP interior Gateway Protocol
RIPv1 use broadcast and is classfull
RIPv2 use Multicast ( 126.96.36.199 ) and it support VLSM ( variable Lenght Subnet Mask )
RIPng support IPV6 networks while RIPv1-2 support IPV4 networks .