US. GAAP vs IFRS

Quick question guys I went to the Info session last week in SF and I was told by the instructors that for the Dec L1 exam we should always assume questions are using IFRS unless stated otherwise. But I was doing some sample questions from the CFA website yesterday and they seem to be assuming GAAP for some of the FRA questions. is it because of they haven’t updated the website or whats the deal ? I am a bit confused

sample questions in CFA site are dated questions. IFRS is to be assumed, unless otherwise stated starting 2009 onwards

ok thanx !