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. Accuracy - reliability - responsibility.






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






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






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






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






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






7. 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.






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






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






10. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






11. 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.






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






13. Points - Polygons - Lines






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






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






16. Assigning location information to text & discourse.






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






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






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






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






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






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






23. The nature of relationships & connectivity between them.






24. Are made with GIS






25. Maps are restricted to a __________.






26. A reference system (geographic coordinates)






27. Deliver location / topographic information.






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






29. 2 ______: 1. Files/records. 2. Database/collection of files.






30. GIS is not a ______






31. 36 Spatial Res: 250m Temporal Res: 1 day Swath Width: 2 -330km






32. When parallels & meridians intersect at right angles.






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






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






35. Explanatory list of symbols on a map






36. Relative to another known feature






37. The ability to link files together.






38. A process of mathematical conversion.






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






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






41. 9 Features & Entities: 1. Mountains. 2. Rivers. 3. Forests. 4. Clouds. 5. ________. 6. Cities. 7. Populations. 8. Streets. 9. Fire Hydrants.






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






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






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






45. An assignment of geographic coordinates to locations.






46. Identify unique points - patterns or features in space.






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






48. To avoid corrupt data!






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






50. Geographic Coordinate System.