Test your basic knowledge |

GIS: Geographic Information Systems

Subject : it-skills
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The 2 _____ in data modelling: 1. Database. 2. Data Storage.






2. _________ of the Real World: (S&E - S&S - G&A) 1. Selection & Elimination. 2. Simplification & Smoothing. 3. Generalization & Aggregation.






3. The reverse of each other.






4. Townships were six miles square - and were subdivided into 36 sections - each section consisting of one square mile. One section of each township was set aside to support public education - and the remaining sections were to be sold at public auction






5. Where 2 lines/arcs intersect - an endpoint - or a point along a line.






6. Digital Elevation Model






7. When distances from the center of the projection to any other place on the map are uniform in all directions.






8. Assigning location information to text & discourse.






9. Contour lines never _______






10. Lines that connect points of equal value.






11. When parallels & meridians intersect at right angles.






12. When areas on a map maintain the same proportional relationship to the areas on the earth that they represent.






13. Preserve Direction






14. User generated content (UGC). Volunteered geog. info (VGI). Professional vs amateur. Neogeography vs GIS.






15. A Complete frame






16. A tabular file containing rows and columns; descriptive attributes about some object such as a geographic feature are contained in each row






17. Accuracy - reliability - responsibility.






18. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






19. Shift in delivery (eg - require user interaction).






20. The 4 elements or ______: 1. Cell Value - each cell carries a value. 2. Cell size - this determines the resolution. 3. Raster bands - Can have single or multiple bands. 4. Spatial Reference - Raster data must have spatial reference.






21. Geographic Coordinate System.






22. Smoothing & Shape abstraction.






23. Preserve Shape






24. HAL - H-Human nature. A-Arbitrary/socially constructed. L-Loss of info (hiding variance within a class or group).






25. The 5 __________: TTCETH - 1. Triangle table 2. Triangle-Node table 3. Coordinate table 4. Triangle-Edge table 5. Hull-Edge table.






26. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






27. Provide information about a particular topic or theme.






28. A reference system (geographic coordinates)






29. A map containing information on only one topic or theme.






30. The 4 types of ___________:SADD. 1. S - Shape: Conformal. 2. A - Area: Variant. 3. D - Direction: Preserved. 4. D - Distance: Variant.






31. The 3 _____: 1. True. 2. Magnetic. 3. Grid.






32. The smallest pixel size visible in an image - the limit of magnification






33. The 5 components of a TIN: NETHT - 1. Nodes 2. Edges 3. Triangles 4. ___ 5. Topology.






34. Deliver location / topographic information.






35. The acquisition of data about Earth's surface from a satellite orbiting the planet or other long-distance methods.






36. Data Modelling - Turning entities into complex objects (geometry - quality).






37. 1. E - Ellipsoid dimensions. 2. D - Datum origin. 3. A - Angular alignment.






38. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






39. GIS is ________






40. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






41. Map in which some thematic mapping variable is substituted for area (like a graph in a map)






42. Essentials of DBMS: Each record has a ________






43. Converts what entities into objects in the computer 1. Geometry (points - lines - polygons). 2. Measurement of attributes. 3. Accuracy &/or error.






44. People creating their own maps - on their own terms by combining elements of an existing toolset.






45. Assigning location information to various media (photos - video - music).






46. Title - legend or key - grid system - distance scale - direction and compass rose






47. 3 topological concepts: 1. Connectivity - arcs connect to each other at nodes. 2._______ - arcs that connect to surround an area define a polygon. 3. Contiguity - arcs have direction & left & right sides.






48. A 3-D frame of reference (model of the earth) used to determine surface locations.






49. Files in the DB can be linked or joined using the _______






50. Application Programming Interfaces (increases access like my maps on google).