TestOut LabSim A+ Certification Practice Exam

Which of the following represents a valid IPv6 address?

1. 192.168.1.1

2. FEC0::AB:9007

3. 10.0.0.1

4. FF00::1

The correct answer is: FEC0::AB:9007

A valid IPv6 address is characterized by its unique hexadecimal format and structure. The correct choice—represented by FEC0::AB:9007—follows the specifications of IPv6 addressing. IPv6 addresses typically consist of eight groups of four hexadecimal digits, separated by colons. However, a shorthand notation allows for the compression of contiguous sections of zeros into a double colon (::), which is perfectly demonstrated in this case. The address starts with FEC0—which is a global address—and includes additional segments that provide specific identification for an interface. In contrast, the other options represent IPv4 addresses, which use a decimal notation and are composed of four octets separated by periods. These formats, such as 192.168.1.1 and 10.0.0.1, cannot be categorized as valid IPv6 addresses. The presence of hexadecimal digits and the colon separator in the correct option is essential for labeling an address as IPv6. Thus, the choice of FEC0::AB:9007 accurately exemplifies the structure of an IPv6 address.