Esri ArcGIS Pro Associate Pro Certification Practice Exam

Which characteristic best describes a line feature?

1. A single vertex.

2. Two or more connected vertices.

3. Three or more connected vertices creating a closed ring.

4. Any number of vertices.

The correct answer is: Two or more connected vertices.

A line feature is defined by its distinct topology, which consists of two or more connected vertices. This characteristic is essential because lines are designed to represent linear features in a geographic context, such as roads, rivers, or paths. The two or more connected vertices ensure that the line has length and direction, distinguishing it from other geometric shapes like points or polygons. In contrast, a single vertex cannot form a line, as it lacks the necessary length and connectivity. While three or more connected vertices may create a closed ring, this arrangement is more indicative of a polygon rather than a line feature, which continues indefinitely in either direction. Lastly, the term "any number of vertices" would also include solitary points or shapes that do not form a continuous line, making it less precise in defining the line feature's essential characteristics. Thus, two or more connected vertices are crucial for establishing a line in spatial data representation.