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GES512S - GEOGRAPHIC INFORMATION SYSTEMS 1 - 1ST OPP - NOV 2022 |
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nAm I BIA unlVERSITY
OF SCIEnCE Ano TECHn OLOGY
FACULTY OF ENGINEERING AND THE BUILT ENVIRONMENT
DEPARTMENT OF LAND AND SPATIAL SCIENCES
QUALIFICATION:
DIPLOMA IN GEOMATICS, BACHELOR OF GEOMATICS, BACHELOR OF GEOINFROMATION
TECHNOLOGY, BACHELOR OF LAND ADMINISTRATION, BACHELOR OF TOWN AND REGIONAL
PLANNING, BACHELOROF PROPERTYSTUDIES, DIPLOMA IN PROPERTYSTUDIES, BACHELOROF
REGIONAL & RURAL DEVELOPMENT
QUALIFICATION CODE:
06DGEO,07BGEO,07GEl,07BLAM,
07BTAR, 06DPRS,08BPRS, 07BRAR
LEVEL: 5
COURSE CODE: GES512S
SESSION: NOVEMBER 2022
DURATION: 3 HOURS
COURSE NAME: GEOGRAPHIC INFORMATION
SYSTEMS 1
PAPER: THEORY
MARKS: 100
EXAMINER
FIRST OPPORTUNITY EXAMINATION QUESTION PAPER
MS ROXANNE MURANGI
MODERATOR
MR MIGUEL VALLEJO
INSTRUCTIONS
1. Write your student number on each answer sheet used.
2. Answer ALL the questions.
3. Read each question carefully before attempting to answer.
4. Write clearly and neatly.
5. Materials allowed: non-programmable calculator, Ruler, Pen, Pencil, Eraser (rubber).
THIS PAPERCONSISTSOF FOUR (4) PAGES(EXCLUDINGTHIS COVERPAGE)
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Geographic Information Systems 1
GES512S
Question 1
State if the following statements are True or False:
1.1 The term "locational query" refers to the process offiltering data based on the specific
content stored in a field.
(1)
1.2 A vector data model uses points to build curvature within a line.
(1)
1.3 Re-projecting is a method used to align an unreferenced dataset with one that has
spatial reference information.
(1)
1.4 A thematic map that displays a quantitative attribute using ordinal classes is called a
choropleth map.
(1)
1.5 Overlay analysis is based on Boolean logic.
(1)
1.6 A small-scale map would show a smaller geographic area than a large-scale map.
(1)
1.7 Nominal data exists as discrete, named values without a natural order amongst the
values.
(1)
1.8 Raster graphic in GIS represents data in a rectangular grid of pixels.
(1)
1.9 Intersect is the topological integration of two geographic data sets that preserves
features that fall within the geographic extent common to both input data sets.
(1)
1.10 Data accuracy is the smallest difference between adjacent positions that can be
recorded and stored.
(1)
[10]
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Geographic Information Systems 1
Question 2
Define the following terms:
2.1 Latitude-Longitude
2.2 Topology
2.3 Horizontal Datum
2.4 Attribute Table
2.5 Digitizing
GES512S
(2)
(2)
(2)
{2)
(2)
[10]
Question 3
3.1 What do you understand by Geographic Information Systems or GIS? In your answer,
discuss the functions and components of GIS. {Five marks for functions and five marks
components). Two marks for the G/S explanation.
{12)
3.2 Explain the differences between geographic coordinate systems and projected
coordinate systems.
(4)
3.3 Discuss cylindrical and azimuthal/planar projections.
(4)
3.4 Describe the three types of map projections by the distortion properties.
(6)
3.5 Define UTM and outline any four properties of the UTM Coordinate System.
(4)
[30]
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Geographic Information Systems 1
Question 4
GES512S
4.1 Name the two main data models used in Geographic Information Systems and
differentiate between how the two symbolizes the data types.
(4)
4.2 There are four categories of GIS analytical functions. Briefly discuss overlay functions
and connectivity operations, provide an example of each.
(4)
4.3 Explain the difference between thematic rasters and image rasters.
(2)
4.4 Suppose you want to select only the point features that are found within the circle in
Figure 1. Explain how you will achieve that using GISanalytical tools.
(4)
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Sun Valley
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Figure 1
4.5 Outline only two problems of map digitization.
(2)
4.6 Which two GISdata selection methods can be used in ArcMap? List these methods and
provide a brief description of each.
(4)
[20]
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Geographic Information Systems 1
Question 5
GESS12S
The cartographer's job is to create attractive maps that can convey the intended message. Answer
the following questions based on map production.
5.1 Define what is a map scale. List the three forms a map scale can presented.
(4)
5.2 Differentiate between large-scale or small-scale, provide an example for each.
(3)
5.3 Outline six factors that will influence the map's scale selection.
(6)
5.4 Briefly explain any four (4) basic map elements.
(4)
5.5 Describe the three different types of thematic maps. Give two examples of each, as
well as the data type that is used to display the data.
(9)
5.6 List any two rules which must be followed when classifying data.
(2)
5.7 Outline any two methods that can be used to create vector data type.
(2)
[30]
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