Advanced Placement (AP) Computer Science

Disable ads (and more) with a membership for a one time $2.99 payment

Enhance your readiness for the AP Computer Science exam with insightful quizzes. Deepen your understanding and master key concepts as you prepare for a successful test experience!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the length of an IPv6 address?

64 bits
32 bits
128 bits
256 bits

The correct answer is: 128 bits

An IPv6 address is specifically designed to accommodate the growing number of devices connected to the internet, which is why it utilizes a length of 128 bits. This expansive address length allows for a significantly larger address space compared to its predecessor, IPv4, which has a 32-bit address and can support about 4.3 billion addresses. The 128 bits of an IPv6 address can theoretically provide approximately 340 undecillion (3.4 x 10^38) unique addresses, ensuring that the limitations of IPv4 are overcome. The structure of an IPv6 address is also noteworthy; it is usually represented as eight groups of four hexadecimal digits, which aligns with the 128-bit structure, further establishing its format and utility in network communication.