National Federation Exam - open or closed book

[silverfox]

When your local board gives the annual federation written
examination to your members, what are the conditions under which the exam is written?
One date, one location,formal setting with a supervisor/proctor and no communication between members ?
OR
TAKE HOME and complete the exam with interaction between
members in order to complete and compare answers. Must be handed in at next board meeting.

WHO SHOULD MAKE THIS DECISION ?