3D Modeling Technology & Digital Applications 3 — Questions and Answers
Question 1: Which technology is used to create interactive real-time 3D experiences viewable in a web browser without plugins?
- WebGL (Correct answer)
- Flash
- ActiveX
- Silverlight
Correct answer: WebGL
WebGL is a JavaScript API that renders interactive 2D and 3D graphics in any compatible browser using the GPU.
Question 2: What is 'photogrammetry' in 3D modeling?
- Creating 3D models from photographs of real objects (Correct answer)
- Measuring light intensity in rendered images
- A UV unwrapping technique
- A type of procedural texture generation
Correct answer: Creating 3D models from photographs of real objects
Photogrammetry extracts 3D geometry and texture from multiple overlapping photographs of a real-world object or environment.
Question 3: Which of the following is a real-time game engine commonly used to visualize architectural 3D models?
- Unreal Engine (Correct answer)
- Blender
- ZBrush
- Substance Painter
Correct answer: Unreal Engine
Unreal Engine offers real-time ray tracing and high-fidelity visualization, making it popular for architectural walkthroughs and product visualization.
Question 4: What does 'LOD' stand for in 3D modeling and game development?
- Level of Detail (Correct answer)
- Layer of Depth
- Light on Demand
- Line of Deformation
Correct answer: Level of Detail
LOD (Level of Detail) refers to using lower-polygon versions of a model when it is far from the camera to improve rendering performance.
Question 5: Which standard defines how 3D assets including PBR materials are packaged for real-time applications?
- glTF (Correct answer)
- DXF
- SVG
- EPS
Correct answer: glTF
glTF (GL Transmission Format) is the Khronos Group standard for efficient delivery of 3D scenes and models, including PBR material data.
Question 6: In the context of 3D software, what is a 'plugin' or 'add-on'?
- Third-party software that extends the host application's functionality (Correct answer)
- A built-in rendering preset
- A type of mesh deformer
- A keyboard shortcut configuration file
Correct answer: Third-party software that extends the host application's functionality
Plugins and add-ons are installable modules developed by third parties that add new tools, workflows, or features to a 3D application.
Question 7: What does 'VR-ready' mean when describing a 3D model or scene?
- The model maintains real-time frame rates at the polygon count and texture resolution required for VR headsets (Correct answer)
- The model was built in virtual reality
- The model uses ray-traced lighting
- The model has been exported to FBX
Correct answer: The model maintains real-time frame rates at the polygon count and texture resolution required for VR headsets
A VR-ready asset is optimized to run at 90+ FPS on VR hardware, meeting strict polygon, draw call, and texture constraints.
3D Modeling Technology & Digital Applications 3
Which technology is used to create interactive real-time 3D experiences viewable in a web browser without plugins?