Hello fellow tech examies

I am going to be taking the Linux+ Exam March 19th. I've been using TestOut and "Linux+ guide to Linux certification" by Thomson Course Tech and both have been a great help because I've had no previous linux experience. I've been using linux for about 3 or 4 months now and have grown fond of its power over windows as well as how stable it is. Anyway I was wondering where I should put most of my focus on with the little time left that I have to study.
I plan to study overall everything but I want to make sure I have the "bulk" questions pinned down well.
1. Should I focus mostly on the text editors? command options, vi, sed, awk? grep, cat, etc.
2. Daemon services. I.E Inittab, Fstab, cron?
3. Security or setting up web/file services. I.E ssh, dhcp, dns, iptables, security, apache etc?
4. File permissions? chown, chmod, chgrp, umask, etc
Anyone see anything on quotas, df, mpstat, systat, apm, acpi, fsck, ports?
I've read a few posts on the people who have passed and they have been a big help. I feel my weaker points are in sed, awk, nano because i prefer vi.