Geography 176B Midterm Test

3 February 2004

Answer all questions, mark your answers on these sheets

1. Which is not a major innovation in ArcInfo Version 8 compared to previous versions?

a. Point-and-click user interface

b. Coverage data model

c. Component-based software

d. Support for object-oriented data modeling

2. If your current horizon is at 10km approximately what proportion of the Earth's surface can you see?

a. 0.0001

b. 0.000001

c. 0.00000001

d. 0.0000000001

3. Which is not an example of analog representation?

a. A paper map

b. A scale model

c. The original Bell telephone

d. A message in Morse code

4. What might be meant by saying a digital database has a scale of 1:24,000?

a. It was created by digitizing a map with a scale of 1:24,000

b. One meter in the database corresponds to 24km on the Earth's surface

c. The area covered by the database is about 15km by 15km

d. It was created by flying a digital camera at 24,000 ft

5. The number 154 is to be inserted as an attribute in a GIS table. If the attribute is coded in ASCII how many bits are used?

a. 8

b. 16

c. 24

d. 32

6. The number 154 is to be inserted as an attribute in a GIS table. If the attribute is coded in short integer how many bits are used?

a. 8

b. 16

c. 24

d. 32

7. What is the possible range of values of a short integer?

a. –255 to +255

b. –32767 to +32767

c. –2147483647 to +2147483647

d. unlimited

8. All geographic information can be decomposed into atoms of the form:

a. <location, time, attribute>

b. <location, time, relationship>

c. <topology, time, attribute>

d. <topology, time, relationship>

9, Digital Earth is:

a. A piece of modern art in which dirt is formed into the shapes of human fingers

b. A vision for an integrated database containing a detailed representation of what is known about the Earth's surface

c. The use of GIS to map and analyze soils

d. A collective term for GIS data models

10. The models that are used to predict weather patterns use representations that reflect what kind of conceptualization of atmospheric pressure, temperature, and rainfall?

a. Continuous fields

b. Discrete objects

c. Object-oriented

d. Relational

11. How many distinct ways are there of representing continuous fields in GIS?

a. 2

b. 4

c. 6

d. 8

12. The TIN model is a representation of what kind of conceptualization?

a. Continuous field

b. Discrete objects

c. Object-oriented

d. Relational

13. The study of the basic elements of description is termed:

a. Topology

b. Ontology

c. Epistemology

d. Topography

14. Which ESRI product would you consider if your task was to add limited GIS functions to an existing large database?

a. ArcView

b. ArcGIS

c. ArcIMS

d. ArcSDE

15. Which is ESRI's most important competitor in the GIS software market?

a. Intergraph

b. Microsoft

c. Adobe

d. Linux

16. In ArcCatalog which color is used to identify shapefile icons?

a. Grey

b. Yellow

c. Blue

d. Green

17. The ESRI Web site that allows an ArcInfo user to add data from across the Internet is:

a. mapquest.com

b. geographynetwork.com

c. gis.com

d. globalgeo.com

18. Which is not a basic principle of the relational model?

a. Classes can inherit attributes from other classes

b. All data can be organized into tables

c. Tables can be linked using common keys

d. Rows in tables correspond to objects in the real world

19. In the relational model a "relation" is:

a. A common key

b. A tuple

c. A column in a table

d. A table

20. Which do not have an associated attribute table in the coverage model?

a. Polygons

b. Arcs

c. Nodes

d. Labels

21. Which is true?

a. The coverage model has more topology than the shapefile model

b. The shapefile model has more topology than the geodatabase model

c. The shapefile model has more topology than the coverage model

d. Topology is another term for terrain

22. Earlier versions of ArcInfo used a "hybrid" model because:

a. Attributes were stored in an RDBMS and geometry was stored elsewhere

b. Geometry was stored in an RDBMS and attributes were stored elsewhere

c. Both attributes and geometry were stored in an RDBMS

d. Neither attributes nor geometry were stored in an RDBMS

23. Encapsulation refers to:

a. The packaging of GIS software into independent components

b. The representation of features as polygons

c. The ability to associate methods with classes

d. Shrink-wrap

24. Looking for a statistical relationship between total population of a county and average income of a county is an example of:

a. Mixing a spatially extensive with a spatially intensive variable

b. Mixing a coverage with a shapefile

c. Mixing a raster data set with a vector data set

d. Mixing a relational model with an object-oriented model

25. Which is said to be "closer to how we actually think about geographic features"?

a. Coverage

b. Shapefile

c. Geodatabase

d. Raster

26. In UML an open triangle denotes what kind of relationship?

a. Association

b. Composition

c. Aggregation

d. Inheritance

27. A class name in italics denotes:

a. A class with no attributes

b. A class with no instances

c. A class with no relationships

d. A class with no methods

28. In the OGC simple feature specification a segment is:

a. A polygon

b. A polyline

c. A stretch of line between two adjacent points

d. A collection of points

29. TIGER stands for:

a. Topologically Integrated Geographic Encoding and Referencing

b. Topographic Index for Geographic Elements and Relationships

c. Trends In GIS Encoding and Referencing

d. Temporal Indexing in Geographic Elements and Relationships

30. The 4^th decimal place of degrees of latitude corresponds to roughly how far on the Earth's surface?

a. 1m

b. 10m

c. 100m

d. 1km