GIS Midterm - Quiz Questions
Which of the following is not considered a representation of spatial data? -Point -Line -Table -Polygon
Table
A DBMS is: -Used to build infrastructure to improve public/private data sharing -A system that stores and organizes data -An internet GIS, typically used only for viewing data (not analysis) -A system that stores, organizes, retrieves, and manipulates databases
-A system that stores, organizes, retrieves, and manipulates databases
Which of the following are required for raster grids? Select all that apply. -Cell value -Number of rows -Cell size -Number of columns -Coordinates of the upper-left corner
-Cell value -Number of rows -Cell size -Number of columns -Coordinates of the upper-left corner
Which of the following can benefit from GIS? Select all that apply. -Finding potential locations for new retail locations -Designing a new school building -Assessing the impact of recent epidemic in town -Predicting global temperature changes in 20 years
-Finding potential locations for new retail locations -Assessing the impact of recent epidemic in town -Predicting global temperature changes in 20 years
Which of the following is not true about scale and map projections? Select all that apply. -Projection causes some type of distortion -NAD 83 datum takes into account the earth's center of mass -Representative fraction can use different units of measurement -It is always better to enlarge the map for an analysis than to reduce it
-Representative fraction can use different units of measurement -It is always better to enlarge the map for an analysis than to reduce it
You should consider ModelBuilder due to the following reason(s). Select all that apply. -When you are tired of keep clicking buttons of geoprocessing tools -When you have a GIS modeling that needs a sequence of analysis -When you plan to use a similar model in the future -When you do not know which geoprocessing tool you should use
-When you are tired of keep clicking buttons of geoprocessing tools -When you have a GIS modeling that needs a sequence of analysis -When you plan to use a similar model in the future
A scale of 1:20,000 indicates that: -1 pixel on the map represents 20,000 pixels on the group -1 unit on the ground represents 20,000 units on the map -1 pixel on the group represents 20,000 pixels on the map -1 unit on the map represents 20,000 units on the ground
1 unit on the map represents 20,000 units on the ground
Convert the following verbal scale to a representative fraction expressed as ratio: 1 inch represents 2 miles
1:126720
What can automatic digitizing do? -Register coordinates based on tablet records of locations -Automatically converts a raster scan to vector lines -Automatically clean a poorly scanned image -Automatically converts vector to raster images
Automatically converts a raster scan to vector lines
A fellow Aggie would like to use a map projection that can help preserve the true direction of a range site. Which map projection would you recommend? -Equidistant projection -Equal-area projection -Conformal projection -Azimuthal projection
Azimuthal projection
What type of data can you use in a GIS? -Either spatial and attribute data can be used, but not at the same time -Attribute data -Both spatial and attribute data -Spatial data
Both spatial and attribute data
Jon Snow, a semi-expert in GIS, falsely projected two maps to wrong coordinate systems, leading to largely distorted maps. Little did he know, he further overlaid the maps with existing old maps. What could be a data error associated with the situation? -Cascading error -Overlaying error -HBO error -Integrating error
Cascading error
If you want to show only the newly developed zone using the city map and the newly developed zone (both in polygons) as the inputs, which geoprocessing tool would you use? -Editor -Clip -Buffer -Select by location
Clip
A fellow Aggie would like to use a map projection that can help preserve the true shape of a range site. Which map projection would you recommend? -Azimuthal projection -Conformal projection -Equal-area projection -Equidistant projection
Conformal projection
Which of the following are not components in establishing relationships in a RDBMS? -Tables -Primary key -Foreign key -Coordinates
Coordinates
Which of the following is not relevant to FGDC? -Promote coordinated development and dissemination of geospatial data -Create all geospatial data of federal government departments and agencies -Membership includes federal government department and independent agencies -Involve in the development of the metadata content standards
Create all geospatial data of federal government departments and agencies
Suppose you want to develop a data model in a GIS. Which of the following is not recommended? -Decide on how you want to store the database -Try describing what the objects and relationships among them are -Develop a network data structure for ease of use -Decide on the objects you want to use to represent the data
Develop a network data structure for ease of use
_____ operation aggregates features based upon a common value for a given attribute.
Dissolve
A map with a scale of 1:200,000 is a large scale map compared to a map with a scale of 1:2,000. True or false?
False
A shapefile is used in a geodatabase to store data on vector features such as points, lines, or polygons. True or false?
False
ALL secondary data is automatically formatted and ready to be used in a GIS. True or false?
False
Data vs Information: Data is information put into context. True or false?
False
Datum transforms 3-dimensional to 2-dimensional surface. True or false?
False
Digitizing is preferred over other data input methods because it saves time and cost. True or false?
False
For raster data, cell without values has a value of NoValue. True or false?
False
For raster data, cell without values has a value of zero. True or false?
False
It is always better to acquire primary data than secondary data. True or false?
False
Raster data should always be stored in a computer 'as is.' That way all of the data can be properly recorded and used. True or false?
False
Spatial data indicates "what" is happening at the location. True or false?
False
Topology refers to vector lines that represent equal values of elevation. True or false?
False
True or false: automatic digitizing is preferred over other digitizing methods because it can automatically clean a poorly scanned image.
False
With raster data, the finer the resolution the larger the area represented by each cell (i.e. less details can be represented). True or false?
False
You can use a combination of features (points, lines, and polygons) as inputs in a Merge tool to combine all these features. True or false?
False
Suppose you would like to create labels of names for geographic features in your Texas map. Which data should you be looking into? -GNIS -Census -DRG -DLG
GNIS
Which of the following is typically used to manage GIS-related data in a DBMS? -Metadata -Hierarchical data structure -Geodatabase -Network data structure
Geodatabase
What does the acronym GIS stand for?
Geographic Information Systems
Which of the following is one of the benefits of geoprocessing? -Automatically generates a framework for a GIS analysis -Helps deciding which GIS tool you should use -Helps creating a more complex data structure -Helps automate GIS tasks
Helps automate GIS tasks
Which of the following is not the benefit of geoprocessing? -Provides a framework for a GIS analysis -Helps automate GIS tasks -Helps checking if your work process is valid -Helps deciding which GIS tool you should use
Helps deciding which GIS tool you should use
Which of these would best represent spatial data of a road network in a city map? -Attributes -Polygons -Points -Lines
Lines
A city allowed new residents to build houses on floodplains but failed to disclose specific information such as flood potential and regulations to residents. Which type of accuracy and precision in the data the city seems to ignore? -Attribute -Positional -Logical -Conceptual
Logical
_______ is information about data that documents the who, what, when, where, and why of a data resource.
Metadata
Which of the following would be the reason to choose vector over raster model? -Need for discrete representation of river lines -Need to do multiple mathematical calculations among layers -Need for integration with imagery data -Need for simple data structure to store data
Need for discrete representation of river lines
Which of the following would be the reason to choose raster over vector model? -Need for representation of discrete features -Need for compact data storage -Need for maintaining topological relationships among data -Need to do multiple mathematical calculations among layers
Need to do multiple mathematical calculations among layers
Datum defines: -Origin and orientation of latitude and longitude lines -Origin of y-coordinates -Center of projection -Origin of x-coordinates
Origin and orientation of latitude and longitude lines
Latitude of origin defines: -Origin of x-coordinates -Center of projection -Origin of y-coordinates -Origin and orientation of latitude and longitude lines
Origin of y-coordinates
Jon Snow, a semi-expert in GIS, mistakenly digitized a map, leading to an inaccurate battle ground map that his troop later used as a base map for strategizing the battle. What could be a data error associated with the situation? -Georeferencing error -Propagation error -HBO error -Locational error
Propagation error
________ data uses cells or pixels to store images in GIS. -Vector -Spatial -Attribute -Raster
Raster
__________ is a cellular based data structure composed of a grid of rows and columns for storing images
Raster
Who is considered the "Father of GIS?"
Roger Tomlinson
Chemical facilities shown on a map of Bryan, TX are considered ________ data while their addresses and chemical information are considered ________ data.
Spatial, attribute
What does SQL stand for? -Structured query language -Spatial quantification language -Spatial quantifier line -Spatial query language
Structured query language
Which is not considered a representation of spatial data? -Points representing bird nests -Tables representing habitat characteristics and locations -Polygons representing wildlife habitats -Lines representing a road network
Tables representing habitat characteristics and locations
Which is not true about map projections and coordinate systems? -The U.S. has been using one datum to avoid any shifts in the data -Different map projections can cause different distortions. -Projected coordinate systems are defined on flat, 2D surface -Geographic coordinate system uses 3D surface to define locations
The U.S. has been using one datum to avoid any shifts in the data
Why would a person choose GIS over other computer systems? -To manage and use quantitative data to solve a complex quantitative problem -To manage and use geographic data to solve a complex quantitative problem -To do high-end graphic editing -To extensively manipulate spatial data to save the most time and cost
To manage and use geographic data to solve a complex quantitative problem.
Precision is independent of accuracy. True or false?
True
Thematic map usually contains a particular theme or topic the map is representing. True or false?
True
True or false: With raster data, the finer the resolution, the smaller the area represented by each cell (i.e. the better the details can be represented).
True
Which is not a characteristic of GIS? -Contains information about the locations -Stores information in databases -Computer-based -Usually contains one layer of data
Usually contains one layer of data
__________ is a coordinate based data structure used to represent geographic features.
Vector
