Guild Wars 2

Hi everyone, I’m a game programmer student currently studying in San Francisco and I dream to work at ArenaNet, this ground breaking company that built such an amazing and enjoyable game. For that I would like to ask for your help. My questions are meant for ArenaNet employees and experienced programmers in the field, but feel free to participate and/or add any questions that you might find relevant.

Looking at the hiring positions for ArenaNet I see you guys ask for “Demonstrable experience with C++”. What, in your opinion, would reflect that? How can I know I have ‘that experience’ to demonstrate?
I suppose this test could be usefull, but I can’t make the link work – http://istest.co/ArenaNet – let me know if you can run it.

Also, the ArenaNet Programming Internship have some bonuses, like:
Writing memory-efficient algorithms
Working with networking APIs
Writing file streaming system
Porting code
Would anyone happen to have something that I could start with in this subjects? Maybe a book or a website link?

If you’re interested in knowing more about what I’m talking about, take a look at this website – http://www.arena.net/ – and scroll all the way down for “Careers”.

Thank you all for your time and help.
See you all in game!