Question 4

Intra-links are links from one part of an HTML document another part of the same HTML document. This is usually found in larger documents

Inter-links are links from one HTML document in one website to another HTML document in the same website. These allow the user to go from one webpage to another in a given website.

External Links are links from one website to other sites on the Web. This helps the user to move on from your site to other related/relavent sites.