Associate Level EAPA_2025 Reddit Questions

For categorical (classified) rasters such as land-use data, Nearest Neighbor interpolation must be used during resampling. This technique preserves the original class values without introducing fractional or interpolated values.

Cubic (Option A) and Bilinear (Option B) are interpolation methods suited for continuous data (elevation, temperature, etc.), but will distort categorical data.

Therefore, the correct answer is C.

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The extremely large and small values (3.48e+38 and 3.48e-38) indicate that valid statistics (min and max values) have not been calculated for the mosaic dataset. Without statistics, ArcGIS assigns default extreme placeholder values. Running the “Build Statistics” tool will calculate the correct min and max elevation values.

Color balance (Option A) affects display but not data statistics.

Overviews (Option C) improve display performance but do not affect statistics calculation.

Therefore, the correct answer is B.

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TheDefine Projectiontool is specifically used when a dataset lacks spatial reference metadata—that is, when its coordinate system is labeled as “Unknown.” This situation arises when the coordinate system information is missing or was never assigned, and it is necessary to tell ArcGIS what spatial reference the data is already in without altering the data’s location or pixel values.

According to ArcGIS Pro documentation and workflow best practices:

"The Define Projection tool assigns a coordinate system to a dataset that does not already have one. It does not alter the dataset’s data or coordinate values—only the metadata is updated."

This is crucial becauseProjectandProject Rasterare tools thattransformdata from one coordinate system to another, and they require that the data already has a valid defined coordinate system to begin with. Attempting to use either of those tools on data with an unknown projection would be incorrect and could lead to spatial inaccuracies.

Therefore, thecorrect and verified toolfor this situation isDefine Projection.

Reference Topics Covered:

• ArcGIS Pro – Data Management → Defining spatial reference

• ArcGIS Pro – Raster Functions and Georeferencing Workflows

• ArcGIS Pro – Geoprocessing Tool Help (Define Projection vs Project Raster)

• ArcGIS Pro Certification Study Guide – Data Management Domain

Calculation rules automatically calculate attribute values based on spatial relationships, other attribute values, or predefined logic at the time of feature creation or update. In this scenario, the intersecting building name can be assigned automatically to the site feature using a calculation rule.

Validation rules (Option A) check for rule compliance but don’t assign values.

Constraint rules (Option B) prevent invalid edits but do not calculate fields.

Therefore, the correct answer is C.

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