I don't know, Queiroz to me, doesn't seem to have the same authority Scolari had, no matter how mad he was at BaĆa, some of his choices for the World Cup seem a bit far fetched and his tactics he used against the Ivory Coast(but then agai it's not like Ivory Coast was playing all that great either) were not working.
The portuguese players were clearly intimidated and afraid to make a mistake, afraid to lose the ball and having to defend(which doesn't make sense, as Portugal has a great defense), more worried about ball possession.
North Korea is not impossible to beat, but we should be careful. As We already have a history with Korean teams.
But I think Brazil should be extra careful with Ivory Coast tonight.