Total Float vs Free Float in Critical Path Method (CPM)

PMP and CAPM aspirants often get confused between Total Float and Free Float. Here's a post explaining the difference between the two, with an example:

http://www.deepfriedbrainproject.com/2009/08/total-free-float-cpm-network-diagram.html

I'm also attaching a downloadable PDF file that illustrates the two concepts using a network diagram.

Click the file image to DOWNLOAD the PDF attachment.