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






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






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






5. Representative fraction






6. Triangulated Irregular Network.






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






8. 2 ______: 1. Unique ID. 2. Type Code. 3 Spatial Components PLP 1. Point. 2. Line/arc. 3. Polygon/area.






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






10. The reverse of each other.






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






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






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






14. Essentials of DBMS: Each record has a ________






15. Arcs only ___ at Nodes






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






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






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






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






20. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






21. 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.






22. The ability to link files together.






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






24. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






25. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






26. The 5 key concepts in Geography & GIS (LDDSN) 1. Location. 2. _________. 3. Distance. 4. Space. 5. Navigation.






27. Points - Polygons - Lines






28. 2 common _______: 1. Vector. 2. Raster.






29. 3 ______ attributes: 1. Values. 2. Relations. 3. Quality.






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






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






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






33. Most popular form of USGS Map


34. 2 ______: 1. Files/records. 2. Database/collection of files.






35. Description by name: ex London






36. A Complete frame






37. Geographic Coordinate System.






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






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






40. Assigning location information to text & discourse.






41. Global Positioning System.






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






43. 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






44. The study of place names - origins - history & meanings.






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






46. Accuracy - reliability - responsibility.






47. Smoothing & Shape abstraction.






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






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






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