Differentiate between standard and enhanced keyboard(10 diffrences)

Which type of navigation involves multiple frames that are linked to a number of other frames? a) bread crumbs b) linear c) reciprocal d) web which type of navigation is similar to a book because users can move back and forth between frames? a) hierarchical b) linear c) reciprocal d) sequential how many items should a menu system have? a) 1-3 b) 5-8 c) 9-11 d) 13-18