EAPA_2025 Esri Exam Lab Questions

Lambert Conformal Conic is best suited for regions that extend predominantly in an east-west direction. This projection minimizes distortion in shape (conformal property) for such areas and is widely used for mapping large areas like states, countries, or continents that are wider than they are tall.

Transverse Mercator (Option A) is better for north-south-oriented regions.

Hotine Oblique Mercator (Option C) is used for areas that are obliquely oriented along a particular great circle path.

Therefore, the correct answer is B.

—

In ArcGIS Pro, ared Xnext to a parameter in a geoprocessing tool typically indicates an invalid input due to conflicts with the current environment settings. One of the most common causes is when theProcessing Extentenvironment setting is configured in a way thatexcludesthe actual input features.

TheUniontool requires that input features fall within the set extent. If the Processing Extent does not cover any part of one or more input features, they are considered invalid and flagged with a red X, preventing the tool from running.

The software checks whether all input features are accessible within the defined extent. If they are not, this pre-validation error is triggered—even if the inputs are valid in terms of geometry or feature type.

Option A is incorrect because geometrical intersection is not a requirement for Union to run—it simply overlays features and includes all areas.

Option C is also incorrect, as the Union tool does indeed require polygon feature classes, but if incorrect feature types are used, a different error (not a red X related to extent) is shown.

This confirms that the red X in this scenario is caused by the Processing Extent settings not including the input features, making the correct answer B.

Constraint rules prevent invalid data entry during editing. In this case, a constraint rule ensures that only valid amperage values are allowed based on the chosen wire gauge. If an invalid amperage is entered, the rule will block the edit and display an error message.

Calculation rule (Option A) automatically calculates values but doesn't prevent invalid inputs.

Validation rule (Option C) flags invalid data but doesn’t prevent edits from being saved.

Therefore, the correct answer is B.

—

Visibility range (also called scale range) controls at what zoom levels a layer or features are displayed. This allows the map to automatically hide features when zoomed out too far, improving performance and reducing clutter, while showing detailed features as the user zooms in.

Definition query (Option A) filters features based on attribute values, not map scale.

Display filters (Option C) filter features at specific scales but require advanced configuration; visibility range is more direct for simple scale-based drawing control.

Therefore, the correct answer is B.

—