Choose NCP-OUSD most accurate study material

You and your colleague open the same USD layer but one of you observes missing geometry. What could be the reason why?

• A. USD automatically adjusts composition based on available system memory.
• B. Differently configured asset resolvers are resolving to different versions of the asset.
• C. Instance prototypes are composing to different identifiers.

You are a developer creating an OpenUSD exporter for an application that also supports import of USD assets. To enable collaborative workflows, you're adding an "export as overrides" option.
Which approach correctly describes which structure your exporter should generate?

• A. Export each prim separately into multiple layers, and reference them individually to maintain sparsity.
• B. Include explicit definitions of all prims, properties, and relationships exactly matching the imported asset to ensure consistency.
• C. Overs of the prims and properties that have been modified or added, omitting unchanged data.

In the context of UsdGeomMesh, which statement is true about mesh normals?

• A. faceVarying normals are specified per face corner, while vertex normals specify a single normal per point.
• B. vertex normals are used for subdivision meshes and faceVarying normals are used only for polygonal meshes.
• C. The number of authored normals must be equal to the number of points in a polygonal mesh.

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)]
}

• A. [(0.05, 0.15, 0.05)]
• B. unset
• C. [(0.2, 0.75, 0.1)]
• D. [(0.5, 0.3, 0.05)]

You are setting up an outdoor scene with realistic lighting and want to simulate the effect of the sun. Which UsdLux light type is most appropriate for this purpose, providing a directional light source with parallel rays?

• A. SphereLight
• B. DomeLight
• C. RectLight
• D. DistantLight