GIS 201 Final Exam

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Author:
dtarasov
ID:
123399
Filename:
GIS 201 Final Exam
Updated:
2011-12-14 06:01:38
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GIS rasters networks geodatabases
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Description:
Review for GIS 201 final exam
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  1. All feature classes participating in a network must take the role of either ________ or __________________.
    edge; junction
  2. Network features can take one of two states: ____________ or __________.
    enabled; disabled.
  3. What are the 2 aspects of network storage in a data model?
    The geometric network (points and lines) and the logical network (tables that store info about how the two relate; seldom seen by the user).
  4. What is a solver?
    A program that solves network analysis problems.
  5. ArcMap comes with solvers called __________.
    traces
  6. What is the difference between simple and complex edges?
    A simple edge has junctions only at the ends; a complex edge also has junctions in the middle.
  7. What is an Euclidean distance?
    The shortest distance between 2 locations.
  8. What is the difference between block functions and focal functions?
    Block functions looks at cells in adjacent "windows" that don't overlap and in which the cells all receive the same statistic; focal functions have the window center on each cell in turn, such that the "windows" overlap.
  9. What is the nearest-neighbor method?
    A method of resampling whereby the new cell is given the value of the old cell that falls at or closest to the center of the new cell.
  10. What does bilinear mean in raster-analysis context?
    A method of resampling whereby a distance-weighted average is taken from the nearest 4 cell centers.
  11. What is cubic convolution?
    A method of resampling which determines a new value by a curve fit through the nearest 16 cell centers.
  12. What is the fastest resampling method?
    Nearest neighbor.
  13. What resampling method should always be used with categorical raster data because the values do not change?
    Nearest neighbor.
  14. What resampling method is usually better for continuous rasters such as elevation?
    Bilinear
  15. Can integer rasters store decimal values?
    No.
  16. With raster analysis, if different coordinate systems are used, what is the order of precedence for the output coordinate system?
    Feature dataset the output is being placed in (if applicable); coordinate system specified by environment settings; coordinate system of the first input to the tool.
  17. By default, all rasters are resampled to the _________ cell size present in the input rasters.
    coarsest
  18. What is the editing capability of the ArcView license level?
    Shapefiles and personal or file geodatabases.
  19. What license level is required for editing geometric networks and planar topology?
    ArcEditor or ArcInfo
  20. True or false: ArcMap can edit within more than one directory or geodatabase at a time.
    False.
  21. What is the difference between the Union tool and the Merge tool?
    The Merge tool combines two features into one and the original two features cease to exist; the Union tool preserves the two input features and creates a new feature in addition to, not instead of, them.
  22. What is map topology?
    A function that users of the ArcView license can use to edit features with shared edges or vertices.
  23. What is a .dxf file?
    "Digital exchange format" or "Drafting interchange format", this is a format for CAD files.
  24. What are the 3 reasons .dxf files are not well-suited for analysis in a GIS?
    • 1. They are referenced to a surveyed local coordinate system.
    • 2. Different layers (i.e., points, lines, and polygons) are all combined into one file with .dxf.
    • 3. CAD files cannot be indexed, sorted, or run queries on.
  25. What is FGDC?
    The Federal Geographic Data Committee, responsible for setting metadata standards.
  26. What does a metadata standard do?
    Specifies what information should be included in metadata and which information is optional and which mandatory. It also specifies the exact format and organization of this information.
  27. What is CSDGM?
    Content Standard for Digital Geographic Metadata, a national metadata standard prepard by the FGDC that has been in use in the United States since 1994.
  28. What is the ISO 19139?
    An internationally accepted standard, more generic than the CSDGM, for metadata.
  29. What is the ISO 19115 and why has it been established?
    A metadata standard that was created in order to be more suitable for geographic data than the ISO 19139.
  30. What is NAP?
    The North American Profile (of the ISO 19115). Jointly developed by the geographic data committees of Canada and the United States, it has been formally adopted by Canada but not yet by the United States.
  31. A 1:24,000 scale map has an effective resolution of __ meters.
    12
  32. The CSDGM content standard divides the information into what 7 sections?
    Identification, Data Quality, Data Organization, Spatial Reference, Entity Attribute, Distribution, and Metadata Reference.
  33. Does ArcGIS 10 support editing FGDC metadata?
    No, but if it already exists, it is displayed.
  34. What are the 6 key data quality issues?
    Lineage, positional accuracy, attribute accuracy, logical consistency, completeness, and temporal accuracy.
  35. What is planar topology?
    Rules about spatial relationships within and between layers that can be used to help locate and eliminate errors.

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