Find the IPv6 prefix of the address 2001::0fc3:ca54:0: a0: 10 if the prefix length is/64/48 Solution Answer: a) /64 Each octet in the ipv6 consists of 16 bits as each hexadecimal represents 4 bits, its prefix is : 2001:0:0:fc3:: It has 4 hexadecimal numbers = 16*4 = 64. b) /48 Means first 48 bits are network part , hence the prefix of this ipv6 with prefix length 48 is : 2001: 0 : 0 ::.