NVIDIA NCP-OUSD Actual Free Exam Questions & Community Discussion

Which of the following are valid principles of asset structure? Choose three.

If you have a Usd.Prim object named my_prim and you want to specifically retrieve an attribute named
"size", which method would you typically use?

Consider the following prim hierarchies. Each prim hierarchy is represented by nested unordered lists and each list item represents a prim with the following format: PRIM_NAME (KIND). No text within the parentheses means that the kind is unset for that prim. Only evaluate model kind hierarchy correctness and the structural choices. Which prim hierarchies represent valid model kind hierarchies? Choose three.

In a complex scene with multiple composition arcs, which of the following could cause unexpected property values? Choose two.

What will be the composed value of /World/Tree/Canopy.primvars:displayColor when you open stage.usda?
#usda 1.0
(
defaultPrim = "World"
metersPerUnit = 1.0
upAxis = "Z"
)
def Xform "World"
{
def Xform "Tree" (
variantSets = ["foliage_color"]
variants = { string foliage_color = "default" }
)
{
def Cone "Canopy" (
references = [ < /_base_foliage_color > ]
)
{
double3 xformOp:translate = (0, 0, 1.3)
token[] xformOpOrder = ["xformOp:translate"]
}
def Cylinder "Trunk"
{
color3f[] primvars:displayColor = [(0.2, 0.1, 0.05)]
double3 xformOp:scale = (0.4, 0.4, 0.4)
token[] xformOpOrder = ["xformOp:scale"]
}
variantSet "foliage_color" = {
"default" {
}
"evergreen" {
over "Canopy"
{
color3f[] primvars:displayColor = [(0.05, 0.15, 0.05)]
}
}
"orange" {
over "Canopy"
{
color3f[] primvars:displayColor = [(0.5, 0.3, 0.05)]
}
}
}
}
}
class "_base_foliage_color"
{
color3f[] primvars:displayColor = [(0.2, 0.75, 0.1)]
}

In OpenUSD, when composing a stage, why might opinions from one layer not take effect in the final composed stage?

What is the primary purpose of a conceptual data mapping document?

Which of these is the most essential composition arc to put onto the components of a model hierarchy?