So I took my A+ back in 2007. I got 1 question wrong on both tests. I totally spanked that test.
Now, Being out of school for 3 years, I am going to take my Network + tomorrow.
The biggest things I have trouble with is the OSI model not knowing what each layer does. I always get them messed up. Also, what layer a protocol operates at.

Remembering distance that the medias can go is also hard.
I've been using Ucertify's Network+ quiz program. I get about 75% on the practice quizzes.
!BRAH!
Suggestions?