Esri GIS Fundamentals Foundation
Certification 2201 UPDATED Questions and
CORRECT Answers
Datum - CORRECT ANSWER - - Provides a frame of reference for finding locations
- Based on a spheroid
Minor Axis - CORRECT ANSWER - - The shorter axis of the ellipse
- North to South
Shape of the Earth (Ellipsoid) - CORRECT ANSWER - Oblate Ellipsoid - because it
rotates on the minor axis
Prolate Ellipsoid - CORRECT ANSWER - If the Earth rotated about its major (longer;
West/East) axis
Ellipsoid - CORRECT ANSWER - a model of the rounded shape of earth (bulging at the
equator)
Measuring Ellipsoids - CORRECT ANSWER - Measured by semi-axes (half of an axis)
- Semimajor and Semiminor axes
Spheroid - CORRECT ANSWER - An ellipsoid that approximates a sphere
- More descriptive, and used by Esri
- Spheroid projections: WGS84, WGS72
The two definitions for a spheroid - CORRECT ANSWER - 1. An ellipsoid that
approximates the shape of a sphere (Used by this course)
, 2. An ellipsoid created by rotating an ellipse about either its major axis (prolate ellipsoid) or its
minor axis (oblate ellipsoid)
Most common spheroid projection in North America - CORRECT ANSWER - Current:
GRS80 (Currently replacing the former)
Former: Clark 1866
Authalic Sphere - CORRECT ANSWER - A sphere with the same surface area as the
spheroid (to make calculations easier)
Choosing a spheroid model - CORRECT ANSWER - - Smaller than 1:5,000,000: Can use
an authalic sphere
- Larger than 1:5,000,000: May need to choose a spheroid
How to find info (such as the map projection) - CORRECT ANSWER - Right-click layer,
properties, source
How do you get to the swipe function? - CORRECT ANSWER - 1) Click on the layer
2) On the ribbon (top area with tabs), click the feature layer contextual tab
3) Under "Compare", click "Swipe"
How do you measure in ArcGIS Pro? - CORRECT ANSWER - 1) Open the ribbon map
tab
2) Under "Inquiry", click "Measure"
Who formalized the system of what we today call Latitude and Longitude? - CORRECT
ANSWER - Hipparchus
Certification 2201 UPDATED Questions and
CORRECT Answers
Datum - CORRECT ANSWER - - Provides a frame of reference for finding locations
- Based on a spheroid
Minor Axis - CORRECT ANSWER - - The shorter axis of the ellipse
- North to South
Shape of the Earth (Ellipsoid) - CORRECT ANSWER - Oblate Ellipsoid - because it
rotates on the minor axis
Prolate Ellipsoid - CORRECT ANSWER - If the Earth rotated about its major (longer;
West/East) axis
Ellipsoid - CORRECT ANSWER - a model of the rounded shape of earth (bulging at the
equator)
Measuring Ellipsoids - CORRECT ANSWER - Measured by semi-axes (half of an axis)
- Semimajor and Semiminor axes
Spheroid - CORRECT ANSWER - An ellipsoid that approximates a sphere
- More descriptive, and used by Esri
- Spheroid projections: WGS84, WGS72
The two definitions for a spheroid - CORRECT ANSWER - 1. An ellipsoid that
approximates the shape of a sphere (Used by this course)
, 2. An ellipsoid created by rotating an ellipse about either its major axis (prolate ellipsoid) or its
minor axis (oblate ellipsoid)
Most common spheroid projection in North America - CORRECT ANSWER - Current:
GRS80 (Currently replacing the former)
Former: Clark 1866
Authalic Sphere - CORRECT ANSWER - A sphere with the same surface area as the
spheroid (to make calculations easier)
Choosing a spheroid model - CORRECT ANSWER - - Smaller than 1:5,000,000: Can use
an authalic sphere
- Larger than 1:5,000,000: May need to choose a spheroid
How to find info (such as the map projection) - CORRECT ANSWER - Right-click layer,
properties, source
How do you get to the swipe function? - CORRECT ANSWER - 1) Click on the layer
2) On the ribbon (top area with tabs), click the feature layer contextual tab
3) Under "Compare", click "Swipe"
How do you measure in ArcGIS Pro? - CORRECT ANSWER - 1) Open the ribbon map
tab
2) Under "Inquiry", click "Measure"
Who formalized the system of what we today call Latitude and Longitude? - CORRECT
ANSWER - Hipparchus
