A+ Operating System Exam Weightings

Below is a table from the CompTIA's examination weighting for the Operating System exam. This was taken from the 2003 objectives available from the CompTIA A+ site.
Notice how little knowledge is needed of networks. I presume this is due to the existance of the Network+ certification.

Topic	% Of Examination
1.0 OS Fundamentals	28%
2.0 Installation, Configuration and Upgrading	31%
3.0 Diagnosing and Troubleshooting	25%
4.0 Networks	16%
Total	100.00%