Avast silent mode?!

Configuring Avast Home Edition I happened on a cool option called "Silent
mode". If I get it right, is is supposed to automatically do the job in case
of a certain problem, e.g. virus found without bugging the user. However if
you switch the "Solent mode" on then another problem arises, whethter to
choose "With general answer YES (OK)" or "With general answer NO (Cancel)".
How do I interpret the two?! Which is more safe and restrictive? I am
interested in a silent mode killing everything suspicious (even if there is
some risk of a mistake) without bothering the user. I am afraid that some
unexperienced users may unintentionally let a virus into the system. Is it
possible to switch off any kind of Avast interaction with the user?
Regards,

--
Ricardo