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. DBMS used for: _______ - access - organize & edit.






2. Maps are restricted to a __________.






3. Can assume all values between any two specific values. They are obtained by measuring.






4. Regulary spaced sample of points representing a surface.






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






6. Relative to another known feature






7. Blue - Green - Red - NIR....






8. Arcs only ___ at Nodes






9. Digital Elevation Model






10. To avoid corrupt data!






11. Preserve Direction






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






13. A process of mathematical conversion.






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






15. Thematic map that uses dots to represent the frequency of a variable in a given area.






16. A Complete frame






17. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






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






19. Geographic Coordinate System.






20. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






21. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






22. Triangulated Irregular Network.






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






24. 80 % of all information contain _________






25. Most popular form of USGS Map

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26. LN 1. L - Level Surfaces. 2. N - NAVD88.






27. Smoothing & Shape abstraction.






28. Can not be made from other colors






29. A line segment between 2 nodes -1 of which is a start node & the other an end node.






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






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






32. Points - Polygons - Lines






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






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






35. Global Positioning System.






36. 2 ______: 1. Files/records. 2. Database/collection of files.






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






38. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






39. An assignment of geographic coordinates to locations.






40. GIS is ________






41. Real Things (trees - forests - cities etc).






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






43. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






44. Essentials of DBMS: Each record has a ________






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






46. A reference system (geographic coordinates)






47. The range of wavelengths sampled by a remote sensor.






48. Representative fraction






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






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