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






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






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






4. Consists of F & E: 1. Features. 2. Entities.






5. 2 ______: 1. Files/records. 2. Database/collection of files.






6. Understand spatial relations between landmarks>shortcuts.






7. Representative fraction






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






9. 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






10. Most popular form of USGS Map

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11. The 2 _____ in data modelling: 1. Database. 2. Data Storage.






12. Can not be made from other colors






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






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






15. 1. An array of regulary spaced cells or pixels. 2. Each cell holds attributes (values).






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






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






18. GIS is not a ______






19. Explanatory list of symbols on a map






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






21. A reference system (geographic coordinates)






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






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






24. Sailors and pilots use these maps to navigate






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






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






27. The nature of relationships & connectivity between them.






28. Essentials of DBMS: Each record has a ________






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






30. GIS is ________






31. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






32. Triangulated Irregular Network.






33. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






34. Geographic Coordinate System.






35. When parallels & meridians intersect at right angles.






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






37. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






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






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






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






41. Digital Elevation Model






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






43. 7 Spatial Res: 30m Temporal Res: 16 day Swath Width: 183km






44. Preserve Direction






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






46. A Complete frame






47. 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.






48. Preserve Shape






49. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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







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