the following question is one that was provided by designers for the "A" 
basic level exam.  It is NOT included in the final published test and is 
for reference only.  The topic was Grid Systems.

101.	Why are grid systems used for locating components, PTH's 
conductor patterns and other features on printed boards and printed board 
assemblies?

	A.	Because CAD systems require it.
	B.	Because design standards require it.
	C.	Because it helps in the manufacturing operations
	D.	Because it avoids having to dimension individual locations.

	Select the most correct answer

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Please send comments, constructive critique, or suggestions to Lisa 
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Dieter Bergman