GIS GIS - Geographic Information System Network Analysis and Transportation Questions and Answers 2

Question 1

Which concept describes the ability of a network edge to be traveled in only one direction?

Accepted Answer

One-way restriction

Answer

A one-way restriction means network traversal is permitted only in the digitized direction (or opposite) of a road segment.

Question 2

In GIS, what is a 'network junction' (node)?

Accepted Answer

A point where two or more network edges meet or intersect

Answer

A network junction is a point feature at which two or more edges connect, enabling connectivity and turn evaluation.

Question 3

Location-allocation analysis in GIS is used to:

Accepted Answer

Find the optimal placement of facilities to best serve a set of demand points

Answer

Location-allocation simultaneously selects facility locations and allocates demand to them to minimize total travel cost or maximize coverage.

Question 4

What does 'connectivity policy' determine in a GIS network dataset?

Accepted Answer

How and when edges and junctions connect to each other

Answer

The connectivity policy specifies whether features connect at endpoints only, at any vertex, or via elevation fields to prevent grade separations.

Question 5

In transit network analysis, what is a 'headway'?

Accepted Answer

The time interval between successive transit vehicle departures on a route

Answer

Headway is the scheduled time gap between consecutive vehicles on a transit line, affecting wait time and service frequency modeling.

GIS - Geographic Information System Practice Test