An IPv6 address consists of how many bits?

Explanation

An IPv6 (Internet Protocol Version 6) address consists of 128 bits expressed as eight groups of four hexadecimal digits separated by colons (e.g., 2001:0db8:85a3::8a2e:0370:7334). It was created to replace IPv4, providing $2^{128}$ (over $3.4 imes 10^{38}$) unique addresses.