GIS GIS - Geographic Information System Network Analysis and Transportation Questions and Answers

Question 1

Which GIS network analysis function finds the shortest path between two points based on travel cost or distance?

Accepted Answer

Route analysis

Answer

Route analysis determines the shortest or fastest path between an origin and destination using network cost attributes.

Question 2

In a GIS network dataset, what attribute defines how much it costs to travel along an edge (road segment)?

Accepted Answer

Impedance

Answer

Impedance is the cost attribute (such as time or distance) assigned to a network edge that is minimized during routing.

Question 3

A service area polygon in network analysis represents:

Accepted Answer

All locations reachable from a facility within a given cost threshold

Answer

A service area delineates all locations accessible from a facility within a specified travel time or distance limit.

Question 4

Which network analysis solver identifies the nearest facility to a set of incidents from a list of candidate facilities?

Accepted Answer

Closest facility solver

Answer

The closest facility solver finds the one or more facilities nearest to each incident based on network travel cost.

Question 5

In GIS transportation analysis, a 'turn restriction' is used to:

Accepted Answer

Prevent or penalize specific turn movements at intersections

Answer

Turn restrictions model real-world prohibitions such as no-left-turn rules at intersections within the network dataset.

GIS - Geographic Information System Practice Test