ArcGIS Exam II questions with correct answers

What is spatial analysis? Answer The process of examining locations, attributes, and relationships of features in spatial data through overlay and other analytical techniques in order to address a question or gain useful knowledge. What types of studies can be performed using spatial analysis? Answer Proximity Analysis (police stations), Suitability Studies (retail), Risk Assessment Studies (flood prone areas), Gravity Models (city pools and distance) Describe a Suitability Study. Answer Create centroids of police beats; buffer the police beat centroids; buffer retail businesses; select major streets and buffer them then dissolve the common overlap to combine the areas. How can spatial joins be used in conjunction with geoprocessing tools to solve problems? Answer Spatial joins can use polluting companies (points) next to geographic data and proximity buffers to water sources. What is the difference between union and intersect? Answer Union combines all the polygons from the input whether they overlap or not. Intersect only contains features that fall within the spatial extent of overlayed polygons. What does union/intersect do to the non-spatial data? Answer Intersect doesn't include it. Merge incudes all of it. What is geoprocessing? Answer Managing and or analyzing data in order to form decisions or solve problems. What are the major geoprcessing tools? Answer