Well...it helps if we know...what updates you are referring to.
If you mean XP critical updates...that should be self-explanatory, IMO. If you want to review why there are such and the individual reasons for each, you can review the data reflected at the Windows Update site and/or the Microsoft website.
If it's not a critical update...then it's user preference. Included among these are things like WMP and other optional components of XP.
As for NET Framework...depends on what is installed on the system. Some programs/games require NET Framework in order to function properly.
Once a component like NET Framework, WMP, etc...are installed...there's a good chance that there are additional critical updates that will have to be installed to cover known system vulnerabilities within those components or XP.
Using wireless...has nothing to do with installing/updating NET Framework.What Is NET Framework?