We run a Random 50 Question test each month with Questions from Mike Holt.
You can check it out here >> Code Quiz
It will be changing (new Questions) later this week.
As for Practice Questions, let me point out what We have here in the Store .. Journeyman's Prep
and 1999 NEC
The first book has 1600 Questions
[This message has been edited by Bill Addiss (edited 08-28-2001).]