Internet Protocol Version 6 (IPv6) addresses are how much larger than Internet Protocol Version 4 (IPv4) addresses?

• A. Twice as large
• B. Six times larger
• C. Four times larger
• D. Three times larger

Answer: (C)

The correct answer indicates that Internet Protocol Version 6 (IPv6) addresses are significantly larger than Internet Protocol Version 4 (IPv4) addresses. Specifically, an IPv4 address is 32 bits in length, which allows for 2^32 unique addresses, totaling around 4.3 billion possible addresses. On the other hand, an IPv6 address is 128 bits long, providing 2^128 unique addresses, which vastly exceeds the number of addresses available in IPv4.

To determine the comparative size in the context of bits, you can consider the ratio of their lengths. Since 128 bits divided by 32 bits equals 4, this means that IPv6 addresses are indeed four times larger than IPv4 addresses. This increase in size is crucial for accommodating the growing number of devices connected to the internet, ensuring there are enough addresses available to meet future demands. Hence, the assertion that IPv6 addresses are four times larger is supported by the fundamental structure and design of both protocols.