1. Which of the following overlay operations will include all of the results of

Question

1. Which of the following overlay operations will include all of the results of an intersection?

a) union

b) subtraction

c) exclusive or

d) none of the above

2. When the overlapping area between two feature classes is identified and stored in a new file where the attributes of only one of the feature classes is maintained, this function is called:

a) intersection

b) union

c) clip

d) dissolve

3. Which of the following statements about NAD83 is false?

a) the reference ellipsoid is GRS80

b) the datum origin is the center of mass of Earth

c) the longitude origin is the Greenwich meridian

d) it best fits any land mass on Earth e) none of the above

4. Points, lines, and polygons

a) can be considered the "attributes" of a GIS data set

b) are called vector primitives

c) can only be used to map discrete objects

d) can be stored in the same feature class in ArcGIS

e) both b) and c)

5. Which of the following are visual variables used for map design?

a) figure-ground, hierarchy, contrast, balance

b) orientation, shape, arrangement, hue

c) choropleth, isopleth, graduated symbol, proportional symbol

d) nominal, ordinal, interval, ratio

6. Which of the following is an ellipsoid?

a) Mercator

b) Clark 1866

c) NAD 83

d) UTM

e) Both b) and c]

Explanation / Answer

1) a) Union: A union is a function which includes all the parts of the polygon and all the results of an intersection.

2) a) Union/Cover: It is similar to union where two layers overlap but only one is retained.

3) c)The co-ordinates are referenced to the the Kansas meridian and not the greenwich meridian

4) a) Can be considered attributes of the GIS data set

5) b) Orientation, shape, arrangement, hue

6) e) Both b) and c) since Clark 1866 and NAD 83 are both ellipsoids

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.