GIS For Engineering (MCQ) 2

Question 1

Which map projection preserves area but distorts shape, making it useful for thematic maps showing quantity?

Accepted Answer

Albers Equal-Area Conic

Answer

Albers Equal-Area Conic preserves area (equal-area property), making it ideal for thematic maps where relative sizes must be accurate.

Question 2

In GIS topology, what rule ensures that no two polygon features in a layer share the same area (overlap)?

Accepted Answer

Must Not Overlap

Answer

The 'Must Not Overlap' topology rule enforces that polygon features within the same layer cannot share the same spatial area.

Question 3

A surveyor uses a total station to collect XYZ coordinates. Which GIS data model best stores this point cloud for terrain modeling?

Accepted Answer

LiDAR LAS format

Answer

LAS (and LAZ compressed) format is the standard for storing point cloud data including XYZ coordinates, intensity, and return number from total stations and LiDAR sensors.

Question 4

What does a Thiessen (Voronoi) polygon represent in engineering GIS applications?

Accepted Answer

The area closer to one point than to any other point in a set

Answer

Thiessen polygons partition space so that every location within a polygon is closer to its seed point than to any other seed point in the dataset.

Question 5

When performing a site suitability analysis, which GIS operation combines multiple raster layers using weighted importance scores?

Accepted Answer

Weighted Overlay

Answer

Weighted Overlay multiplies each raster layer by its assigned weight and sums the results to produce a composite suitability score.

GIS - Geographic Information System Practice Test

GIS - Geographic Information System Practice Test

GIS For Engineering (MCQ) 2