  The problem of proposed topology for network comes when using Prim's
algorithm with default distance (unrealistic distances) between network's nodes
and don't care about the lakes, high hills, buildings, etc. This problem will
cause incorrect estimations for cost (budget) of requirements like the media
(optic fibre) and the number or type of Access-points, regenerator, Optic
Amplifier, etc. This paper proposed a new technique of implementing Prim's
algorithm to obtain realistic topology using realistic distances between
network's nodes via Global Positioning System GPS and Geographic Information
Systems GIS packages. Applying the new technique on academic institutes network
of Erbil city from view of media (optic fibre) shows that there is disability
in cost (budget) of the media which is needed (nearly) 4 times if implement
default Prim's algorithm (don't using GPS & GIS) base on unrealistic distances
between the nodes.
