GST 101 - Module 2 Self-assessment Quiz

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1. Vector data has an associated attribute table.

True

False

Vector data always has an associated attribute tables that holds the non-spatial descriptive information about its associated feature.

Explanation

Vector data always has an associated attribute tables that holds the non-spatial descriptive information about its associated feature.

About This Quiz

GST 101 - Module 2 Self-assessment Quiz - Quiz

Self-assessment quiz for GST 101 - Module 2 - Understanding Geospatial Data Models

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2. A vector line must always start and end with a node and may have any number of vertices between the two nodes.

True

False

Vector lines (and polygons) begin and end at a node. Each point of deflection between the beginning and ending nodes is a vertex.

Explanation

Vector lines (and polygons) begin and end at a node. Each point of deflection between the beginning and ending nodes is a vertex.

3. A ratio attribute has a natural zero.

True

False

A ratio attribute has a natural zero and measures order and magnitude.

Explanation

A ratio attribute has a natural zero and measures order and magnitude.

4. A raster best represents continuous objects.

True

False

Rasters are great choices when you wish to represent continuous objects. Vectors are best for discrete objects but do poorly at continuous objects.

Explanation

Rasters are great choices when you wish to represent continuous objects. Vectors are best for discrete objects but do poorly at continuous objects.

5. A text data type cannot be used for mathematical calculations.

True

False

Only numeric data can be used for mathematical calculations. Date data can be used for date calculations, such as determining how many days are between two dates.

Explanation

Only numeric data can be used for mathematical calculations. Date data can be used for date calculations, such as determining how many days are between two dates.

6. A major deficiency of the Triangulated Irregular Network (TIN) data model is that it does not easily accommodate differing sample density.

True

False

One of the primary benefits of a TIN is that it accommodates differing sampling densities. By accommodating differing sampling densities, it uses storage space more efficiently.

Explanation

One of the primary benefits of a TIN is that it accommodates differing sampling densities. By accommodating differing sampling densities, it uses storage space more efficiently.

7. A discrete object is individually indistinguishable and does not exist between observations.

True

False

Discrete objects have well-defined boundaries and do not exist between observations. Examples of discrete objects are light poles, buildings, political boundaries, and roads.

Explanation

Discrete objects have well-defined boundaries and do not exist between observations. Examples of discrete objects are light poles, buildings, political boundaries, and roads.