One thing to watch for is the manual may give you different info on the brake workings from what you have on your RV.
The new systems don't care if you press on the foot treadle at the same time as the parking brake is engaged, they're designed for that. The manual may give you info on the older systems that aren't designed for that. You need to answer the way the manual states or they question will be marked as wrong.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 Jeep JKU Dragon Edition