The two name system that linnaeus developed classifies organisms by a) genus and order b) order and species c) genus and species d) kingdom and class

genus and species

Explanation:

The answer would be dogs.

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it