Final answer:
An IPv6 address consists of 128 bits, which allows for a larger number of unique IP addresses compared to the 32 bits used in IPv4.
Step-by-step explanation:
An IPv6 address consists of 128 bits. Compared to the older IPv4 which is only 32 bits, IPv6 allows for a much larger number of unique IP addresses.
IPv6 addresses are typically written as eight groups of four hexadecimal digits, where each group represents 16 bits. Thus, there are 8 groups × 16 bits per group = 128 bits in total. For example, an IPv6 address may look like this: 2001:0db8:85a3:0000:0000:8a2e:0370:7334.