I had a little trouble with this lab, in only its wording. The question was asking to "configure R4 so that no more than 5000 LSAs can exist in the database." I knew of the command max-lsa, however this was to limit "self-generated" LSAs, and not all LSAs in their entirity, which is what the question implies.
Perhpas Im knitpicking here, but is it that I dont understand, or could the question be worded a bit differently to suit the requirements? The reason I ask is because if this was asked in the lab, you might go off in a wild goose chase trying to configure up stub areas, totally stub areas, when its not necessary?
***EDIT*** I WAS knitpicking and didnt read the lab properly