Norton Security question for netbooks

hi some Qs

 

1. how do you do load a norton to a netbook without a disc - just use the product code?

2.can you use Norton Internet Security for Netbooks or does it have to be 360?


3.for netbooks and laptops - can you use an old norton e.g. 2011 (360) and would that be ok or does it have to be the current  year?

 

thanks