Top 30 Babylon.js Multiple Choice Questions (MCQs) with Answers

1 .

Babylon framework was ____ programming language.

A)

PHP

B)

Java

C)

Python

D)

TypeScript

Correct Answer : TypeScript

Explanation : Babylon.js was created with the TypeScript programming language.

2 .

Which of the following is true about Babylon.js?

A)

It is an open-source framework

B)

It is one of the most popular 3D game engines

C)

It is a JavaScript framework for 3D game development

D)

All of the above

Correct Answer : All of the above

Explanation : Following things are true about Babylon.js :

* It is an open-source framework
* It is one of the most popular 3D game engines
* It is a JavaScript framework for 3D game development

3 .

____ control mesh appearance, including colour, texture, and lighting attributes.

A)

Lights

B)

Materials

C)

Meshes

D)

Cameras

Correct Answer : Materials

Explanation : Materials control mesh appearance, including colour, texture, and lighting attributes.

4 .

______ are the 3D objects, such as cubes, spheres, or bespoke models, that may be displayed on the screen.

A)

Lights

B)

Materials

C)

Meshes

D)

Cameras

Correct Answer : Meshes

Explanation : Meshes are 3D objects, such as cubes, spheres, or bespoke models, that may be displayed on the screen.

5 .

Which of the following shader is in charge of converting 3D geometry to screen space and transferring data to the fragment shader?

A)

Vertex shader

B)

Edgy shader

C)

Edge cut shader

D)

Fragment shader

Correct Answer : Vertex shader

Explanation : The vertex shader is in charge of converting 3D geometry to screen space and transferring data to the fragment shader.

6 .

Which of the following shader is in charge of determining the final colour of each pixel?

A)

Edgy shader

B)

Vertex shader

C)

Fragment shader

D)

Edge cut shader

Correct Answer : Fragment shader

Explanation : The fragment shader is in charge of determining the final colour of each pixel.

7 .

To produce a mirror-like scene, ____ are employed.

A)

Replica scene

B)

Reflection probes

C)

Replication target

D)

None of the above

Correct Answer : Reflection probes

Explanation : To produce a mirror-like scene, reflection probes are employed.

8 .

_____ is the application's primary container for all objects and cameras.

A)

Scenes

B)

Meshes

C)

Cameras

D)

None of the above

Correct Answer : Scenes

Explanation : Scenes is the application's primary container for all objects and cameras.

9 .

Which of the following controls the scene's view and allows you to observe the items from a certain angle?

A)

Lights

B)

Meshes

C)

Materials

D)

Cameras

Correct Answer : Cameras

Explanation : Cameras control the scene's view and allow you to observe the items from a certain angle.

10 .

Which of the following initiates the render loop, which refreshes and renders the scene continually?

A)

engine.Render(function () { scene.render(); });

B)

run.LoopRender(function () { scene.render(); });

C)

engine.runRenderLoop(function () { scene.render(); });

D)

All of the above

Correct Answer : engine.runRenderLoop(function () { scene.render(); });

Explanation : engine.runRenderLoop(function () { scene.render(); }); initiates the render loop, which refreshes and renders the scene continually.

11 .

The ______ camera spins around the target.

A)

ArcCamera

B)

ArcRotateCamera

C)

RotateCamera

D)

All of the above

Correct Answer : ArcRotateCamera

Explanation : The ArcRotateCamera camera spins around the target.

12 .

Which of the following creates meshes in Babylon.js?

A)

Mesh.box()

B)

CreateBox()

C)

Mesh.Create()

D)

Create.mesh()

Correct Answer : Mesh.Create()

Explanation : Mesh.create() creates meshes in Babylon.js.

13 .

In Babylon.js, you may create a screenshot by utilizing the engine's ____ functionality.

A)

renderTarget

B)

TargetScreen

C)

renderScreen

D)

renderScreenshot

Correct Answer : renderTarget

Explanation : In Babylon.js, you may create a screenshot by utilizing the engine's renderTarget functionality.

14 .

A set of alterations performed on an item over time is known as ______-.

A)

Trigger

B)

Skeleton

C)

Movements

D)

Animation

Correct Answer : Animation

Explanation : A set of alterations performed on an item over time is known as animation.

15 .

_______ function adds a mesh to the scene.

A)

Scene.Mesh()

B)

Scene.addMesh()

C)

Add.sceneMesh()

D)

None of the above

Correct Answer : Scene.addMesh()

Explanation : Scene.addMesh()function adds a mesh to the scene.

16 .

Who created babylon.js?

A)

David Catuhe

B)

David Sting

C)

David Walt

D)

David Flanagan

Correct Answer : David Catuhe

Explanation : It was initially released in 2013 under Microsoft Public License having been developed by two Microsoft employees. David Catuhe created the 3D game engine and was helped by David Rousset (VR, Gamepad and IndexedDB support) mostly in their free time as a side-project.

17 .

______ aids in the transformation of a 2D shape into a volumic shape.

A)

Line

B)

Tube

C)

Ribbon

D)

Extrusion

Correct Answer : Extrusion

Explanation : Extrusion aids in the transformation of a 2D shape into a volumic shape.

18 .

____ accepts as input an array of pathways and draws lines along those paths.

A)

Line

B)

Tube

C)

Ribbon

D)

Extrusion

Correct Answer : Ribbon

Explanation : Ribbon accepts as input an array of pathways and draws lines along those paths.

19 .

_______ is a method used in computer graphics to generate the appearance of depth in textures by simulating a displacement of pixels along a surface normally dependent on the camera perspective.

A)

Internal mapping

B)

Parallax mapping

C)

Rectangle mapping

D)

None of the above

Correct Answer : Parallax mapping

Explaination : Parallax mapping is a method used in computer graphics to generate the appearance of depth in textures by simulating a displacement of pixels along a surface normally dependent on the camera perspective.

20 .

Parallax mapping is also called ________.

A)

On mapping

B)

off mapping

C)

offset mapping

D)

onset mapping

Correct Answer : offset mapping

Explanation : Parallax mapping is also called offset mapping.

21 .

______ is a Babylon.js feature that allows you to generate and change textures in real-time.

A)

Dynamic texture

B)

Reactive pattern

C)

Interactive texture

D)

None of the above

Correct Answer : Dynamic texture

Explanation : Dynamic texture is a Babylon.js feature that allows you to generate and change textures in real-time.

22 .

Is Curve3 and Vector3 both are same?

A)

Yes

B)

No

C)

Can Not Say

D)

None of the above

Correct Answer : No

Explanation : A Curve3 describes a 3D route in space specified by a set of 3D points, whereas A Vector3 is a 3D point represented by its x, y, and z coordinates.

23 .

A ____ describes a 3D route in space specified by a set of 3D points.

A)

Curve

B)

Vector

C)

Vector3

D)

Curve3

Correct Answer : Curve3

Explanation : A Curve3 describes a 3D route in space specified by a set of 3D points.

24 .

______ is a Babylon.js class that makes it easy to generate sophisticated Meshes such as boxes, spheres, cylinders, and toruses.

A)

MeshBox

B)

MeshBuilder

C)

Parametric Mesh

D)

None of the above

Correct Answer : MeshBuilder

Explanation : MeshBuilder is a Babylon.js class that makes it easy to generate sophisticated Meshes such as boxes, spheres, cylinders, and toruses.

25 .

Which is better, Mesh or MeshBuilder?

A)

Mesh

B)

MeshBuilder

C)

Both (A) and (B)

D)

Depends upon the situation

Correct Answer : Depends upon the situation

Explanation : Mesh and MeshBuilder both have their own set of benefits and applications. The best option is determined by the project's unique requirements.

26 .

_____ collision in Babylon. js refers to the process of assessing if a user has clicked on a Mesh in the scene.

A)

Mesh picking

B)

Mesh Joining

C)

Mesh Shaping

D)

Mesh Intersecting

Correct Answer : Mesh picking

Explanation : Mesh picking collision in Babylon. js refers to the process of assessing if a user has clicked on a Mesh in the scene.

27 .

A ____ is used in Babylon.js to represent a location in 3D space.

A)

Vector

B)

3Dvector

C)

Vector3

D)

None of the above

Correct Answer : Vector3

Explanation : A Vector3 is used in Babylon.js to represent a location in 3D space.

28 .

Which of the following method clears all actions that have been registered with the action manager?

A)

Clear

B)

Del

C)

Delete

D)

Remove

Correct Answer : Clear

Explanation : Clear method, clears all actions that have been registered with the action manager.

29 .

With which of the following method an action is registered with the action manager?

A)

Register.action

B)

registerAction

C)

Actionregister

D)

None of the above

Correct Answer : registerAction

Explanation : With registerAction method an action is registered with the action manager.

30 .

_______ is a method used in Babylon.js to identify the intersection of a ray and objects in the scene.

A)

Picking

B)

Raysection

C)

Intersection

D)

Raycasting

Correct Answer : Raycasting

Explanation : Raycasting is a method used in Babylon.js to identify the intersection of a ray and objects in the scene.