Geographical Information System 2071

Attempt any six questions.

1. Define GIS. Describe the role of GIS in a mountainous country like Nepal. Support your answer with a reference of an application.

2. What are various coordinate system used in GIS application? Describe them in brief.

3. What are raster an vector data? Differentiate between their properties with advantages and disadvantages.

4. What are various sources of GIS data? Describe methods of data capture.

5. What do you mean by spatial analysis? How do you perform the raster overlay operation using relational operators? Explain with example.

6. What is GPS? How does it work? What are various types of errors related to GPS data?

7. Explain how does a clearing house works? What problems do you face during the spatial data sharing?

8. Write short note on (any two) 

     (a) DTM

     (b) Remote Sensing Data

     (c) Open GIS

     (d) Layer