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. Digital Elevation Model






2. When parallels & meridians intersect at right angles.






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






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






5. Sailors and pilots use these maps to navigate






6. A Complete frame






7. Connectivity: ___________. 3 elements 1. Nodes & vertices define the shape of the arc. 2. Arcs have a from-node (or starting node) & a to-node (or ending-node). 3. Arcs only join at nodes.






8. Deliver location / topographic information.






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






10. Lines that connect points of equal value.






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






12. Maps are restricted to a __________.






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






14. 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.






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






16. Explanatory list of symbols on a map






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






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






19. Global Positioning System.






20. A reference system (geographic coordinates)






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






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






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






24. Understand spatial relations between landmarks>shortcuts.






25. Points - Polygons - Lines






26. Accuracy - reliability - responsibility.






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






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






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






30. Symbol on a map used to show direction






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






32. Preserve Shape






33. Precision of a measurement with respect to time






34. To avoid corrupt data!






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






36. GIS is ________






37. 2 ______: 1. Files/records. 2. Database/collection of files.






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






39. 3 different types of ________ - content & services ICS I - Infrastructure (Hardware & Sensors). C - Content (sensors - APIs - UGC & VGI). S - Standards (or lack thereof): access - authority.






40. An assignment of geographic coordinates to locations.






41. 3 levels of _______:1. Conceptual - definitions - attributes. 2. Logical Model - formalize definitions & measures. 3. Digital Model - define & describe features.






42. 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.






43. Google Maps or Microsoft Bing.






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






45. Description by name: ex London






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






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






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






49. GIS is not a ______






50. Geographic Coordinate System.