I've taken several practice exams, and I always score 80% or higher. The questions I usually get wrong relate to the following, and I will study using the link(s) after each item. I'm also using the Exam Cram book.
-Printers
Laser printing - Wikipedia, the free encyclopedia (all the practice questions I seem to get wrong involve the laser printing process)
-Obsolete memory standards and data transfer rates of modern memory
Dynamic random-access memory - Wikipedia, the free encyclopedia as well as the individual pages for DDR/DDR2/DDR3
-Default ports (I know 21, 23, 25, 80, need to memorize the rest, I guess)
List of TCP and UDP port numbers - Wikipedia, the free encyclopedia
-Obsolete networking standards (token ring? is this really on the 800 series tests?)
Computer network - Wikipedia, the free encyclopedia
I've only skimmed those pages, but it seems like thoroughly reading each of those will give me enough info to pass the test.
I'm probably overthinking the whole thing, but I can't afford to lose $350 by failing the exams. Any curveballs I should be aware of?