NCSO ACSA EXAM PREP: LATEST KEY QUESTIONS AND
ANSWERS FOR AN A+
Which model represents the height of ground surface including the objects on
the surface?
Digital surface model (DSM)
Geocoding is the process of:
Finding geographic coordinates for spatial data
Which of the following is a passive remote sensing system?
Thermal imaging
Which operation/function below is NOT used in raster data analysis?
Field calculator
You are looking for places within 1 kilometre of a river where there are habitats of
numerous animal species. Which geo-processing tool would you use to combine
features from multiple layers (such as the habitat data with the river buffer) to
output only those habitats located within the 1-kilometre buffer zone?
Clip
The output of Map Algebra is a statistics table.
False
Which of the following statements about raster data analysis operations are not
true?
A simple map algebra task is a type of zonal operation
"Intersect" and "Clip" create similar spatial results, but what is the main
difference between these two geoprocessing tools?
Intersect combines attributes from all inputs, whereas Clip retains attributes from only
the input layer.
When choosing a map projection, which of the following questions should you
ask? (choose three)
a. What is the map's theme or subject matter?
b. What region of the world is being mapped?
c. What scale is being mapped?
,Healthy green vegetation tends to have the maximum reflectance of
electromagnetic radiation in which of the following spectral band?
Near infrared
Which of the following degrees/minutes/seconds values is equivalent to the
decimal degrees location -106.76528?
106°45'55" W
Data that is mapped at which of the following scales is likely to be the most
detailed?
1:1,000
Choose the correct attribute query to select all retail stores with at least
$1,000,000 of annual revenue.
Store_Type = Retail AND Revenue >= 1000000
The spatial resolution of remotely sensed images does not affect the accuracy of
digitization.
False
Which one of the following statements regarding the vector data structure is NOT
true?
Vector data suffers from the mixed pixel problem
Is the following statement true or false?
A floating point raster can only be reclassified by assigning a new value to a
range of cell values
True.
Which of following statements is false?
a. TIN files can have a higher resolutionin areas where a surface is highly variable
or where more detail is desired and a lower resolution in areas that are less
variable.
b. In ModelBuilder, it indicates the model has been executed successfully when
elements are highlighted in colours.
, c. The geoprocessing workflows saved as a model using ModelBuilder in ArcGIS
are reusable and sharable.
d. Raster files are generally more computationally efficient to produce sub-
products, such as slope and aspect, than files saved in TIN format.
In ModelBuilder, it indicates the model has been executed successfully when elements
are highlighted in colours.
Which of the following is the colour composition for displaying a typical colour
infrared image?
B: visible green; G: visible red; R: Near Infrared
In ArcGIS, A map template provides:
Pre-arranged way of placing elements on a map
How many 'Major' streamline segments are there within Greater Sydney?
498
What expression would be used to query how many channel segments are longer
than 1000 metres?
Hint: The length (metres) is found within the 'Geodeslen' field of the attribute
table.
a. "GeodesLen" <1000
b. "Length" >1000
c. "GeodesLen" >1000
d. "GeodesLen" =1000
c. "GeodesLen" >1000
How many channel line segments intersect with the Ryde LGA?
14
What would the expression be if we need to determine select the Blue Mountains
and Hawkesbury LGA's. Note: to answer this question you will need to have both
LGA's selected at the same time. Hint: When undertaking compound queries it is
ANSWERS FOR AN A+
Which model represents the height of ground surface including the objects on
the surface?
Digital surface model (DSM)
Geocoding is the process of:
Finding geographic coordinates for spatial data
Which of the following is a passive remote sensing system?
Thermal imaging
Which operation/function below is NOT used in raster data analysis?
Field calculator
You are looking for places within 1 kilometre of a river where there are habitats of
numerous animal species. Which geo-processing tool would you use to combine
features from multiple layers (such as the habitat data with the river buffer) to
output only those habitats located within the 1-kilometre buffer zone?
Clip
The output of Map Algebra is a statistics table.
False
Which of the following statements about raster data analysis operations are not
true?
A simple map algebra task is a type of zonal operation
"Intersect" and "Clip" create similar spatial results, but what is the main
difference between these two geoprocessing tools?
Intersect combines attributes from all inputs, whereas Clip retains attributes from only
the input layer.
When choosing a map projection, which of the following questions should you
ask? (choose three)
a. What is the map's theme or subject matter?
b. What region of the world is being mapped?
c. What scale is being mapped?
,Healthy green vegetation tends to have the maximum reflectance of
electromagnetic radiation in which of the following spectral band?
Near infrared
Which of the following degrees/minutes/seconds values is equivalent to the
decimal degrees location -106.76528?
106°45'55" W
Data that is mapped at which of the following scales is likely to be the most
detailed?
1:1,000
Choose the correct attribute query to select all retail stores with at least
$1,000,000 of annual revenue.
Store_Type = Retail AND Revenue >= 1000000
The spatial resolution of remotely sensed images does not affect the accuracy of
digitization.
False
Which one of the following statements regarding the vector data structure is NOT
true?
Vector data suffers from the mixed pixel problem
Is the following statement true or false?
A floating point raster can only be reclassified by assigning a new value to a
range of cell values
True.
Which of following statements is false?
a. TIN files can have a higher resolutionin areas where a surface is highly variable
or where more detail is desired and a lower resolution in areas that are less
variable.
b. In ModelBuilder, it indicates the model has been executed successfully when
elements are highlighted in colours.
, c. The geoprocessing workflows saved as a model using ModelBuilder in ArcGIS
are reusable and sharable.
d. Raster files are generally more computationally efficient to produce sub-
products, such as slope and aspect, than files saved in TIN format.
In ModelBuilder, it indicates the model has been executed successfully when elements
are highlighted in colours.
Which of the following is the colour composition for displaying a typical colour
infrared image?
B: visible green; G: visible red; R: Near Infrared
In ArcGIS, A map template provides:
Pre-arranged way of placing elements on a map
How many 'Major' streamline segments are there within Greater Sydney?
498
What expression would be used to query how many channel segments are longer
than 1000 metres?
Hint: The length (metres) is found within the 'Geodeslen' field of the attribute
table.
a. "GeodesLen" <1000
b. "Length" >1000
c. "GeodesLen" >1000
d. "GeodesLen" =1000
c. "GeodesLen" >1000
How many channel line segments intersect with the Ryde LGA?
14
What would the expression be if we need to determine select the Blue Mountains
and Hawkesbury LGA's. Note: to answer this question you will need to have both
LGA's selected at the same time. Hint: When undertaking compound queries it is
