Take me to your leader

Which of these would be a valid IPv6 address? Pick two.

A) fe80::cabc::a7:8d5

B) fdf8:f53b:82e4::53

C) fe80::200:5aee:feah:20a2

D) fe80::2000:aff:fea7:f7c

E) fe80:74:12dd:b1ff:fe9a:1edf:11:8a:abb

F) I’m now ready to speak with the aliens

The answer: B) fdf8:f53b:82e4::53 and D) fe80::2000:aff:fea7:f7c

An IPv6 address should consist of 128 bits, which will be represented as eight groups of hexadecimal values. These groups can sometimes be abbreviated by dropping any leading zeros or performing a one-time replacement of groups of zeros with a double colon.

In this example, option A) has two double colons, which is not allowed in an IPv6 address. Option C) includes the character “h”, which is not a valid hexadecimal value. Option E) has nine groups of address values, which is one more than the IPv6 standard allows.

Want to know more? Watch “An Overview of IPv4 and IPv6.”

The primary IP technologies used today are IP version 4 and IP version 6. In this video, you’ll learn the differences between these two technologies, the differences between public and private IP addressing, and how automatic private IP addressing (APIPA) can be used to provide connectivity.