An ArcGlS user receives two shapefiles that are defined with the same projection and represent features in the same study area. When they are displayed together in ArcMap. the difference of their locations in coordinate space is so large that they are barely visible when viewed at their full extent.
How can the user determine whether the projections of the shapefiles are correctly defined?

An ArcGIS user processes a point feature class using the Collect Events tool. The user finds that the output value for each feature is 1. Why did the tool only produce values of 1?

A raster dataset called rasterl.tif contains many pixels with values of NoData.
Which map algebra expression changes NoData values to 0 (zero) in the output raster dataset while leaving all other pixel values the same?

An ArcGIS user has a point feature class, and needs to determine an area of Influence for each point. Which tool should be used to perform this analysis?

An ArcGlS user in a city office has a tool created from a geoprocessing model. The user is planning to share the tool with someone outside their office How can the user ensure that others can run the tool without being able to change it?