For this test I will be giving you a page or two of schematic symbols.  Contact the instructor for the test.  This will be a closed notes, computer and friend test.  Be sure to understand what defines an input and output. 

Input controls energy for example a switch. On a ladder diagram the inputs are located on the left.

Output consumes energy for example a light bulb.  On a ladder diagram the outputs are located on the right.

I suggest using the wisc-online.com website in addition to the book chapter 2 prior to taking the test.  The link to wisc-online is http://www.wisc-online.com/objects/viewobject.aspx?id=IAU3006.