Turbocharge Your IT Journey: Ace the Cisco Certified Network Pro Test 2026 – Network Ninja Style!

An IPv6 address consists of 128 bits. This is a fundamental aspect of the IPv6 protocol, which was developed to address the limitations of the IPv4 address space. IPv6 provides a much larger address space, which is essential for supporting the increasing number of devices connected to the internet.

The structure of an IPv6 address is typically represented in hexadecimal, divided into eight groups of four hexadecimal digits, which reflects its 128-bit length. Each hexadecimal digit represents 4 bits, so to convert from bits to hexadecimal format, you divide the total number of bits by 4 (128 bits ÷ 4 = 32 hexadecimal digits).

In contrast, the other options—64 bits, 256 bits, and 32 bits—do not accurately represent the size of an IPv6 address. IPv4 addresses, for example, are 32 bits, which highlights the significant increase in address space provided by IPv6.