Online Access Free NCP-OUSD Exam Questions

As part of a data exchange workflow, you have exported the following file from your DCC tool, and notice that the displayed extents box of the sphere is too large:
#usda 1.0
(
defaultPrim = "Model1"
)
def Sphere "MySphere"
{
double radius = 0.5
float3[] extent = [(-3.0, -3.0, -3.0), (3.0, 3.0, 3.0)]
}
Your tool, and also the final consumer of the scene data, would like best-fit correct extents. Which of the following could the export process do to address this problem for any exported boundable prim?

• A.Create a Scope prim for each boundable prim and make it a parent of the boundable prim.
• B.Add an "extentsHint" attribute to all boundable prims with the correct bounds.
• C.Check and, if necessary, fix any authored extent values on all boundable prims.
• D.Remove any authored "extent" values - USD will automatically calculate the correct extents for you.

Referring to dining_room.usda, which of the following best describes the role of the references composition arc on the /Root/Chair prim?
#usda 1.0
def Xform "Root"
{
def Xform "Chair" (
references = @chair.usda@
)
{
float3 xformOp:scale = (1.5, 1.5, 1.5)
}
}

• A.It composes the definition from chair.usda with the local /Root/Chair. The local xformOp:scale overrides corresponding referenced opinions.
• B.It is used to import variant sets from chair.usda into the local /Root/chair prim.
• C.It completely replaces the local /Root/chair prim with the contents of chair.usda, ignoring any local attribute definitions such as scale.
• D.It creates a bidirectional link between the local /Root/chair prim and chair.usda so that any changes in one are automatically reflected in the other.

When constructing an OpenUSD scene, in which scenario is it most appropriate to use a payload instead of a reference?

• A.When it's important to ensure that all referenced data is immediately available on stage load.
• B.When deferring the loading of heavy assets until they are needed, thereby improving initial load performance.
• C.When an asset requires frequent updates, but the asset should default to the latest version.
• D.When the asset is small and inexpensive to load to ensure efficient transfer over web protocols.

Which of the following sentences are correct when converting between .usda, .usdc, .usd and .usdz files?
Choose two.

• A.A .usda file can be converted to a .usdc file using usdcat.
• B.A .usda file can be converted to a .usd file by simply renaming it.
• C.A .usda file can be converted to a .usdz file using usdcat.
• D.A .usda file can be converted to a .usdc file by simply renaming it.

In OpenUSD, a composed stage aggregates opinions from multiple sublayers. Why might an opinion in one layer not take effect in the final composed stage?

• A.The layer containing the opinion has a weaker strength in the stage's layer stack than other layers that override it.
• B.Opinions in a layer only affect the composed stage if the layer is explicitly referenced in every other layer.
• C.OpenUSD prevents opinions from taking effect unless they originate from the root layer.
• D.The opinion is authored using the weaker keyword, which explicitly lowers its priority.