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. A reference system (geographic coordinates)






2. An assignment of geographic coordinates to locations.






3. Smoothing & Shape abstraction.






4. GIS is ________ - spatial analysis & dependent on the computer.






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






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






7. Explanatory list of symbols on a map






8. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






9. Digital Elevation Model






10. Assigning location information to text & discourse.






11. Area of the Earth that is displayed in each image






12. A data classification method that divides a set of attribute values into groups that contain an equal range of values






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






14. Essentials of DBMS: Each record has a ________






15. Connect & travel between landmarks by moving thru space.






16. Relative to another known feature






17. A Complete frame






18. Google Maps or Microsoft Bing.






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






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






21. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






22. Understand spatial relations between landmarks>shortcuts.






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






24. Preserve Direction






25. 80 % of all information contain _________






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






27. GIS is not a ______






28. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






29. Description by name: ex London






30. When parallels & meridians intersect at right angles.






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






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






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






34. Maps that show the absolute location of places and geographic features determined by a frame of reference - typically latitude and longitude






35. The nature of relationships & connectivity between them.






36. Defined by NOIR NOIR N-Nominal - qualitive data. O-Ordinal - order or ranking. I-Interval - numeric scale - arbitrary units. R - Ratio - fixed origin - continuous scale.






37. Points - Polygons - Lines






38. Accuracy - reliability - responsibility.






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






40. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






41. Fixed entitites - Can only take a specific value (Ex. number of students in a class - anything that is counted and not measured)






42. 2 common _______: 1. Vector. 2. Raster.






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






44. Classes based on natural groupings through examination of histogram (good: minimizes differences bad: data range uneven)






45. Can not be made from other colors






46. Points taken at regular intervals from the cumulative distribution function (CDF) of a random variable.






47. The ability to link files together.






48. Sailors and pilots use these maps to navigate






49. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






50. Representative fraction