Radar, Airfield, and Weather Systems (RAWS) CDC Volume 1 Practice Test

IPv6 addresses are longer in length because they use 128 bits, while IPv4 addresses use 32 bits. Since 128 is four times 32, IPv6 addresses are four times larger in bit-length than IPv4 addresses. (Note: the total number of possible IPv6 addresses, 2^128, is vastly larger than 2^32, but the question focuses on the size of the address itself, which is four times longer.)