Blackjack Dealer Rules

I know that if the dealer has an ace showing and he looks after offering insurance ... my question is: look at their dealer hole card if they have a showing facecard? Did they return if they have 21 and everyone loses or does the table the chance to play hands before finding the dealer has 21? I am speaking style casino, not the house rules and I can not find a clear answer.

Yes, he can look in any Blackjack is actually playing against the dealer, so he must have this advantage prestidigitation. Also the seller must know the total because it is necessary to stay or take a card to totals.

Of course, it would elsle how the dealer bust or win

nope he duznt

Yes, the dealer may