Which of the following is a valid IPv6 address. Present your answer simply as the letter of the valid addres (e.g. ‘A’).
A 2001:1075e::4748
B 2001:3916:2ce4:c6fd:a535:506:7c5d:caf7
C 2001:2401:3e4:d159:25e:a283:5e63:bdea:a731
D 2001:139d:9e78:97cf:4bd4:329a
IPv6 is the long term solution to the Internet running out of IPv4 addresses. We’ll all have to learn how to network with IPv6 sooner or later.
The nice thing about IPv6 is that subnetting is a lot easier – best practice is to always use a /64 subnet mask for all networks with end hosts. This can lead to a lot of ‘wasted’ addresses, but the IPv6 address space is so large that it isn’t a concern.
These questions should help familiarize you with the IPv6 world and networking with IPv6. Read more in our how to subnet IPv6 guide.
You can verify your answers with our IPv6 Subnet Calculator.
Download our Subnet Cheat Sheet for all the essential information you need to quickly perform subnet calculations in your head.
If you want to learn more about networking and get the Cisco CCNA certification, we highly recommend the Cisco CCNA Gold Bootcamp as your CCNA training course. The CCNA is by far the most in-demand networking certification by employers, and the Gold Bootcamp is the highest rated Cisco course online. It has an average rating of 4.8 from over 30,000 public reviews:
