The size of IP address as per IPv6 protocol is :A64 bitsB32 bitsC128 bitsD256 bitsAnswer: C. 128 bits Read Explanation: The size of an IP address as per the IPv6 protocol is 128 bits.This is a significant increase from the 32-bit addresses used in the previous version, IPv4. The change was necessary to accommodate the massive growth of the internet and the ever-increasing number of devices that need a unique address. A 128-bit address space provides an astronomically larger number of unique addresses compared to the 32-bit IPv4 space. Read more in App