# GST 101 - Module 2 Self-assessment Quiz

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Rickasmith
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Quizzes Created: 7 | Total Attempts: 2,157
Questions: 10 | Attempts: 244  Settings  Self-assessment quiz for GST 101 - Module 2 - Understanding Geospatial Data Models

• 1.

### Vector data has an associated attribute table.

• A.

True

• B.

False

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

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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.

• A.

True

• B.

False

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

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• 3.

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

• A.

True

• B.

False

A. True
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.

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• 4.

### In an attribute table, a row represents single attribute for a record.

• A.

True

• B.

False

B. False
Explanation
A row represents a single record. Columns represent attributes.

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• 5.

### An ordinal attribute records both order and magnitude.

• A.

True

• B.

False

B. False
Explanation
An ordinal attribute records order only.

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• 6.

### A ratio attribute has a natural zero.

• A.

True

• B.

False

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

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• 7.

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

• A.

True

• B.

False

A. True
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.

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• 8.

### A raster cell can only hold a color value.

• A.

True

• B.

False

B. False
Explanation
A raster cell can hold values other than colors.

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• 9.

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

• A.

True

• B.

False

B. False
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.

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• 10.

### A raster best represents continuous objects.

• A.

True

• B.

False

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

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