TestOut LabSim A+ Certification Practice Exam

Which two characteristics describe an IPv6 address?

1. 16 decimal groups; 64 bit address

2. Eight hexadecimal quartets; 128 bit address

3. Four octets; 32 bit address

4. Two binary sequences; 256 bit address

The correct answer is: Eight hexadecimal quartets; 128 bit address

An IPv6 address is characterized by its structure of eight groups of four hexadecimal digits, which are separated by colons. This format allows for a far greater number of unique addresses compared to previous versions of IP addresses. Each group consists of four hexadecimal digits, which can represent a value from 0000 to FFFF. The total length of an IPv6 address is 128 bits, a substantial expansion over the 32-bit length of an IPv4 address. This increase in address space is essential due to the rapid growth of the internet and the need for a vast number of unique addresses to accommodate the increasing number of devices connected worldwide. Given this structure and size, the choice that accurately describes an IPv6 address includes the eight hexadecimal quartets and the total length of 128 bits.