The "write it on one sheet" is an excellent method for most technical stuff, which probably makes it good for the IT exams.

Of course, for a bar exam, or maybe Eng. Lit, you'd probably have to write it on a shovel - chosing the more appropriate tool.

I still have the "crib sheets" I made for half a dozen freshman and sophomore exams. I never referred to them during the exams, but they got me through a 35 year career with very much reduced need to refer to large and ponderous manuals.

Well, I will confess to actually using a crib sheet during a sophomore exam, to confirm the correct subscripts in the relativistic form for Maxwell's equations - but hey, I was a mechanical engineer, not a d...d battery chewer.

John