Imagine a population evolving by genetic drift, in which the frequency of allele K is 0.8. What is the probability that at some point in the future allele K will drift to a frequency of 1.0

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

The form that the information for a map is store is by satellite image