NASD Exam prerequisites

Here is a link to the NASD site showing the prerequisites for the NASD series exams…

NASD - Registration & Qualifications - NASD Registration and ...
The Series 7 is a corequisite exam that needs to be successfully completed in addition to the Series 66 exam before a candidate can register with a state. ...

NYSE PDF file Outlining the content of the Series 7 Exam

The following link points to a pdf file hosted by the NYSE.  It
details and outlines the content of the General Securities Registered
Representative Examination (Test Series 7).

Content Outline for Series 7 (pdf file from NYSE)