Exam · Inspect an OpenUSD scene before physics simulation
A real, server-scored exam for this course. Score strictly above 80% to pass and get a genuine, verifiable certificate.
Write your response in your own notes, then compare it with the sample answer. This practice is separate from the scored exam and does not affect your certificate.
Inspect ready-candidate.usda and accessory.usda, then predict where the marker will appear in the composed stage.
The crate body is /World/Crate, the cube /World/Crate/Shape, material /World/Looks/Surface and marker /World/Attachment/Marker. The local reference composes the marker into the referencing branch.
This is an ungraded example of the reasoning supported by the worked answer, not a practical competency judgement.
Predict the ready, missing-units and scaled-parent dimensions before running the inspector.
Ready is about 0.4 metre per axis. Missing units falls back to 0.01 and produces about 0.004 metre, while also failing explicit-unit authorship. Scaled parent produces about 40 metres. The tolerance accepts floating-point noise, not those scale errors.
This is an ungraded example of the reasoning supported by the worked answer, not a practical competency judgement.
Compare ready-candidate and visual-only without changing either supplied file.
The cube in visual-only lacks PhysicsCollisionAPI. Crate is the dynamic body and floor is static collision geometry. The CPU report does not establish contact response, settling, penetration or solver behaviour.
This is an ungraded example of the reasoning supported by the worked answer, not a practical competency judgement.
Inspect unbound-material and invalid-material. Explain why they fail for different reasons.
Unbound material retains the material prim but has no physics binding on the crate, causing PHYSICS_MATERIAL. Invalid material remains bound but its restitution is 1.2, causing MATERIAL_RANGE under this project contract. Neither teaches measured coefficients of a real material.
This is an ungraded example of the reasoning supported by the worked answer, not a practical competency judgement.
An assistant proposes deleting the dependency check and changing the parent scale. Write a review response before applying anything.
Reject removal of the dependency check. Request a separate candidate containing only the intended asset correction, explain why parent scale needs changing if relevant, preserve the negative fixture, and reopen/rerun all checks against unchanged expectations.
This is an ungraded example of the reasoning supported by the worked answer, not a practical competency judgement.
Prepare a short handover with observed results, exact limits and the next validation owner.
Record actual OpenUSD static-inspection results and input digests, identify each expected finding code, and state that no solver, NVIDIA validator, browser or PDF was run. Assign engine-specific rehearsal and independent course/exam review before any release claim.
This is an ungraded example of the reasoning supported by the worked answer, not a practical competency judgement.
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