And some of it is not going into my long-term memory, if you know what I mean ... for goodness' sake, who needs to remember the UL code for surge protectors (1449)? Who needs to know that COM1: is mapped to 3F8h and IRQ4 (that's what reference books are for)? And who cares that DOS memory runs from 00000h to fffffh (note the five digits in the hex address)?
I'm scared I'll flunk it ... gotta take some practice exams this week.