i've taken most of them at home in my room at my apartment. i took one at the library. noise doesnt bother me unless its regonizable noise. there's a few kids who play basketball outside my window and the sound of them playing doesnt bother me, but when they stop a game and start a coversation i lose my concentration. as soon as i hear the first word, i start to follow the conversation and i'm done. also sometimes my roomates play music and i can hear it through the wall. if i've never heard the song before, i'm fine. but if i know the song, i start to follow along in my head and i completely lose my focus.
i think i'll be fine with coughing, sirens, barking and general rustling around at the test. but if the dogs start to bark words or the sirens start playing a song i know, i'm screwed.