The type of questions your are asking are not those of a person who is new to NBU.

You have the same type of questions as:

nikhil2346565959
Arun K
andy2345
mikenew
nikenew
ramluke
 

See: 
https://www-secure.symantec.com/connect/forums/header-files 
https://www-secure.symantec.com/connect/forums/media-id-mismatch-issue 
https://www-secure.symantec.com/connect/forums/symantec-use-media-id-and-barcode 
https://www-secure.symantec.com/connect/forums/difference-9 

Please let us know if you are experiencing any real issues 

Theory is covered in NBU manuals and TechNotes.

The posts given by Marianne will provide the answers.

Further to Mariannes comments, there have been issues with various users posting many many questions about 'what if this happens, what if that happens', but of a very basic level.

Further, there have been hundreds of exam type questions, where the quailty of the questions asked are very poor, very unrealistic and some impossible to answer due to insufficient information.

All of these questions that have been asked could have been answered by either looking in the manuals, or Google.

Due to the large number of these questions, the moderators are putting a stop to it, with such threads/ posts being 'locked' as soon as there are seen.

The odd question now and again would be fine, but it was getting silly, and this is not what the forum is for, it is for real break/ fix issues, not imaginary ones.

Martin