Dima, you are not kidding are you??  Here is my humble attempt to answer you.
1- Historically; it was owned by the Pentagon - USA.  Currently; no one can lay claims to it as its architecture is non-central therefore no one entity can control it.  Internet Naming Service exists and this is a service that makes sure that internet names (like www.xoxoxoxo.xxx) are not just created randomlly and are subject to some rules especially the .xxx part of it.
2- No idea what are you talking about
3- Local accounting firms?  No one really knows as no regulation authority exists to rate them in the first place.  However, you will always be safe going for the international ones such as Earnest&Yong or KPMG etc... 
4- Best major will be LIFE!!!  CEOs are made with experience and exposure and not with degress.
5- In what context??  Most popular is computer memor (aka RAM), ECC RAM stands for Error Correction Code (or Circuit).  Check out the Kingston memory guide for more info (scroll down to get to ECC).

Hope I made some sense!