Can you name the only NBA team with a roster composed entirely of guys that played at the NCAA level?

It's the Milwaukee Bucks.

Given the influx of international players, and the number who made the jump directly from high school to the pros, it's actually sort of remarkable that there are any teams composed entirely of former NCAA players. The Bucks actually do have a pretty sizable contingent of foreign-born players -- Andrew Bogut, Luc Richard Mbah a Moute and Joe Alexander among them -- but they all played college ball in the U.S. (at Utah, UCLA and West Virginia, respectively).