My current work place is payinf for me to take a few classes through skillsetsonline. I was looking at the CompTIA side of the program. It shows CompTIA Network+ 2009 Part A CompTIA Network+ 2009 Part B. But below that it also shows CompTIA Network+ 2012 Part A and CompTIA Network+ 2012 Part B. I can only take so many classes... but I was wondering if there is a reason to take all 4 of these? Or is the 2012 parts A and B the most current Network+ test.