Are you ready for the CCNA exam?

Determine in a couple of minutes whether there is a missing skill that could prevent
you from passing the CCNA certification exam. Your only investment is a couple of clicks.
No extraneous software to install or configure, connect to the lab in under one minute.
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MIMIC Virtual Lab CCNA at http://www.gambitcomm.com/live has a list
of challenges to test your skills. For example:

Enable IPv6 connectivity between router1 and router2 over the serial interface connecting
them, so that you can ping each other's IPv6 address.

Use IPv6 subnet 2001:A10:1:10::/64 for this exercise. What are the IOS commands necessary
to accomplish this? Obviously, your last command would be a successful ping command.