The advanced airway chapter in the Brady books covers everything more advanced than an OPA or NPA. We were told by our instructor that use of advanced airways (including ETI) was technically a basic skill at the national level. We actually got to practice using combitubes, kings, lmas, and eti. I thought they were all quite easy, though the rather inflexible mannequin made it somewhat difficult to visualize the cords for eti. I was however, despite my best efforts, unable to get a combitube to go into the larynx, giving me the general impression that the dual lumen (yes, I understand that a king is technically a duel lumen airway) is fairly useless. Well intentioned, but really not worth the effort.
Umm, back to your question. If you are taking an NREMT exam, it should test to national standards, so there may be questions on the exam about advanced airways. If you are taking a state test, then it depends on what the state SOP for basics is. In my state, basics are permitted to use everything but ETI, but only when on nonmedic rigs, so in my county emts dont place advanced airways.