Database connective is necessary for making a dynamic web page.

Answer 1

I'm going to nudge 'Database' towards 'external data source'. Yes, languages like PHP can use database connectors, but you can also use:

fetch, XML HTTP Request, AJAX, web storage, include SQL libraries (in-browser), etc.

Answer 2

(reconsiders) ... unless by 'dynamic' you mean animated and/or self-modifying (like DHTML) -- the "database" in this case might be your DOM... but I wouldn't call it that on an exam.

Answer 3

yes

Answer 4

yes