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Ses212:Introduction To Geographic Information Systems Question Paper
Ses212:Introduction To Geographic Information Systems
Course:Introduction To Geographic Information Systems
Institution: University Of Eldoret question papers
Exam Year:2010
Answer all questions in section A and any other two in section B
SECTION A
QUESTION ONE
a)Define GIS and state its basic components. (4marks)
b)What are the processes involved in using GIS.(3marks)
c)To make adequate decisions,users of a GIS-system should have access to various kinds of information acquired by several disciplines.List the disciplines.(2marks)
d)GIS databases are normally conceptualized as series of layers containing geographic information.These data layers can be broadly grouped.List the groups and give examples of each.(3marks)
QUESTION TWO
a) Spatial objects are geographic features that can be described on a map.These objects referred to as features are usually classified in a GIS into THREE data types.List the data types.(3marks)
b)Explain briefly the THREE examples of spatial relationship.(6marks)
c)Define the following:
i.Attributes
ii.Layers(2marks)
QUESTION THREE
Case Study Application:Environmental Community Service Project
This case study describes an ongoing environmental community service project in Eldoret involving the Environmental Science and planning student at large.In the patnership project,a non-profit land trust,a community college,public schools,and municipal agencies collaborated in water quality monitoring and Geographic Information Systems(GIS)training and sampling.Textual documentation from the project,interviews of student volunteers,trainers,and collaborators,and Photographic and computer -generated products were used as data sources.The study focused upon community relations and the combination of the environmental and technological applications across a year-long project.
a)What types of technology can you use in your participation to locate the exact points where sampling is conducted?(2marks)
b)How can the GPS benefit the project.(3marks)
c)How can you use the GIS towards implenting the project.(4marks)
d)Do you expect that you will work with GIS in some future capacity?(1mark)
SECTION B
QUESTION THREE
a)There are different ways to organize data inside a GIS.Name the two ways most currently used by different GISs.(2marks)
b)Explain the TWO ways (above) with the aid of a sketch and examples.(8marks)
c)Enumerate the advantages and disadvantages of raster and vector data models.(10marks)
QUESTION FOUR
a)List the steps to follow while implementing a GIS system.(5marks)
b)State the main benefits of today''s GIS?(4marks)
c)What are the main problems of today''s GIS?(4marks)
d)What are the main trends and developments of a GIS?(7marks)
QUESTION FIVE
a)What is a GPS?(2marks)
b)Briefly explain the principle of GPS operation.(4marks)
c)State the THREE major Components of GPS.(3marks)
d)Explain briefly any FOUR factors that affect GPS.(8marks)
e)What are the factors that determine Position Dilution Of precision(PDOP).(3Marks)
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