Macromedia ColdFusion MX 7 Certified Developer Study Guide
A1:
D. By default, none of the others exist.
A2:
B. start is typically not that useful for actual processing, because when the tag is executed it has no knowledge of any tag contents or children. C is impossible, because processing cannot occur when the tag is inactive.
A3:
C. <cfassociate> associates a child tag with a parent so as to pass any data up to it.