UCD LDA 150 TEST 2 EXAM QUESTIONS
AND ANSWERS GRADED A+ 2025/2026
1. _________ contain pixels rather than vector-based points, lines, or polygons. - ANS A.
Rasters
2. The raster model uses_________ to locate the raster on the earth's surface. - ANS D. an x-y
coordinate for a corner pixel and the cell dimensions
3. Which of the following data must be stored as a discrete raster? - ANS geology
Nancy has a 10 MB raster with a cell size of 16 meters. She resamples it to 8 meters to match
another raster she is using. What is the approximate size of the resampled raster? - ANS 40
MB
What is one of the key limiting factors in the use of raster data? - ANS A. Large areas cannot
be stored with high precision.
6. The largest number that can be stored in a single byte is_________. - ANS 255
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 7. Phil needs to store average daily temperatures ranging from −30 to 140 degrees Fahrenheit in
an integer raster. What is the optimum storage choice? - ANS B) 2-byte signed integers
When performing spatial analysis on rasters, the rasters should be stored in_________. -
ANS D. a projection that preserves area and distance
9. The rows in an attribute table are called_________. - ANS D) records
10. The columns in an attribute table are called_________. - ANS A) fields
11. Because GIS requires compact and flexible underlying data storage capabilities, most use
a_________ database as a foundation. - ANS C) relational
12. Field used to join or relate two tables is called a(n)_________. - ANS A) key
13. The_________ table remains the table of interest and receives the information appended
during a join, whereas the_________ table provides the additional information. - ANS A)
target, join
The numerical relationship between objects in one table and matching objects in another table
is called the_________ - ANS B) cardinality
15. The Rule of Joining states that_________. - ANS B) for each record in the target table
there must be one and only record in
the join table
16. Suppose you have a polygon feature class of states and a standalone table of McDonald's
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
AND ANSWERS GRADED A+ 2025/2026
1. _________ contain pixels rather than vector-based points, lines, or polygons. - ANS A.
Rasters
2. The raster model uses_________ to locate the raster on the earth's surface. - ANS D. an x-y
coordinate for a corner pixel and the cell dimensions
3. Which of the following data must be stored as a discrete raster? - ANS geology
Nancy has a 10 MB raster with a cell size of 16 meters. She resamples it to 8 meters to match
another raster she is using. What is the approximate size of the resampled raster? - ANS 40
MB
What is one of the key limiting factors in the use of raster data? - ANS A. Large areas cannot
be stored with high precision.
6. The largest number that can be stored in a single byte is_________. - ANS 255
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 7. Phil needs to store average daily temperatures ranging from −30 to 140 degrees Fahrenheit in
an integer raster. What is the optimum storage choice? - ANS B) 2-byte signed integers
When performing spatial analysis on rasters, the rasters should be stored in_________. -
ANS D. a projection that preserves area and distance
9. The rows in an attribute table are called_________. - ANS D) records
10. The columns in an attribute table are called_________. - ANS A) fields
11. Because GIS requires compact and flexible underlying data storage capabilities, most use
a_________ database as a foundation. - ANS C) relational
12. Field used to join or relate two tables is called a(n)_________. - ANS A) key
13. The_________ table remains the table of interest and receives the information appended
during a join, whereas the_________ table provides the additional information. - ANS A)
target, join
The numerical relationship between objects in one table and matching objects in another table
is called the_________ - ANS B) cardinality
15. The Rule of Joining states that_________. - ANS B) for each record in the target table
there must be one and only record in
the join table
16. Suppose you have a polygon feature class of states and a standalone table of McDonald's
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
