Blender 3D Software Certification — Questions and Answers

Question 1: In Blender, what is 'Cryptomatte' used for in rendering?

Encrypting render files for security
A type of volumetric fog effect
Creating cryptographic hashes of render data
Automatically generating per-object or per-material ID mattes for compositing (Correct answer)

Correct answer: Automatically generating per-object or per-material ID mattes for compositing

Cryptomatte generates accurate object/material ID matte passes automatically, enabling clean isolation of any element in compositing without manual matte creation.

Question 2: How do you split one viewport area into two in Blender?

Ctrl+Shift+Split
Drag from the corner grip of the area (Correct answer)
Edit > Split Area
View > New Viewport

Correct answer: Drag from the corner grip of the area

You can split an area by dragging from the small triangle grip in any corner of the area.

Question 3: What is the purpose of the Outliner in Blender?

Showing a hierarchical list of scene objects and data (Correct answer)
Managing render settings
Displaying UV maps
Editing material nodes

Correct answer: Showing a hierarchical list of scene objects and data

The Outliner displays a tree-view of all objects, collections, and data-blocks in the scene.

Question 4: In Blender sculpting, what does the Mask brush do?

Protects masked regions from being affected by any sculpting brushes (Correct answer)
Assigns a new material to the painted faces
Hides the masked geometry from the 3D viewport
Temporarily locks the subdivision level of the mesh

Correct answer: Protects masked regions from being affected by any sculpting brushes

Masked areas (shown in dark) are protected from sculpting operations, allowing you to work on unmasked areas without disturbing adjacent regions.

Question 5: What does the 'Metallic' input in the Principled BSDF control?

Surface shininess only
Reflection intensity independent of color
Object density
Whether the surface behaves as a metal or a dielectric (non-metal) (Correct answer)

Correct answer: Whether the surface behaves as a metal or a dielectric (non-metal)

Setting Metallic to 1 makes the surface behave like a conductor, using base color as the specular tint and removing diffuse.

Question 6: What is the main difference between Cycles and Eevee in Blender?

Cycles is for animations; Eevee is for still images
Cycles is faster; Eevee is more physically accurate
Cycles uses the GPU only; Eevee uses the CPU only
Cycles is a path tracer (realistic, slow); Eevee is a real-time rasterizer (faster, less accurate) (Correct answer)

Correct answer: Cycles is a path tracer (realistic, slow); Eevee is a real-time rasterizer (faster, less accurate)

Cycles traces actual light paths for photorealistic results but is slower; Eevee uses rasterization for fast real-time results with approximated effects.

Question 7: What does a 'Volume Scatter' shader in Blender simulate?

Light scattering through volumetric media like fog, smoke, or haze (Correct answer)
Particles scattered across a surface
Vertex scatter distribution for hair
Scatter-mode UV projection

Correct answer: Light scattering through volumetric media like fog, smoke, or haze

Volume Scatter simulates light scattering inside volumetric media (fog, smoke, clouds), creating realistic atmospheric effects.

Question 8: What is the purpose of the Pose brush in Blender's Sculpt Mode?

It deforms the mesh as if posing a character, bending limbs naturally using IK-like logic (Correct answer)
It creates a new pose entry in the armature's pose library
It enters Pose Mode for the attached armature without leaving Sculpt Mode
It snaps the mesh vertices to positions matching a reference pose image

Correct answer: It deforms the mesh as if posing a character, bending limbs naturally using IK-like logic

The Pose brush uses an IK-inspired algorithm to deform the mesh in natural limb-bending arcs, allowing character posing directly in Sculpt Mode without an armature.

Question 9: What render pass in Blender separates the diffuse shading from the full composite render?

Combined Pass
Diffuse Color Pass
Normal Pass
Diffuse Direct Pass (Correct answer)

Correct answer: Diffuse Direct Pass

The Diffuse Direct pass isolates the direct diffuse lighting contribution, allowing compositors to adjust it independently from other elements.

Question 10: What does the 'Solidify' modifier do in Blender?

Converts particles to mesh
Freezes object transforms
Adds thickness to thin or zero-thickness surfaces (Correct answer)
Bakes all modifiers permanently

Correct answer: Adds thickness to thin or zero-thickness surfaces

The Solidify modifier gives thickness to flat or single-layered mesh surfaces by extruding them along their normals.

Question 11: What does the 'Loop Cut' tool (Ctrl+R) do in Edit Mode?

Bevels all edges
Adds a new edge loop around a cylinder of faces (Correct answer)
Deletes a selected edge loop
Cuts the mesh along a face diagonal

Correct answer: Adds a new edge loop around a cylinder of faces

Ctrl+R inserts a new edge loop by splitting a ring of quads that runs around the mesh.

Question 12: In Blender, what is a 'Texture Coordinate' node used for?

Providing various coordinate inputs (UV, Object, Generated, Normal) for texturing (Correct answer)
Storing texture file paths
Baking texture coordinates to a map
Displaying UV layouts in the Image Editor

Correct answer: Providing various coordinate inputs (UV, Object, Generated, Normal) for texturing

The Texture Coordinate node supplies different projection methods for placing textures, including UV, Generated, Object space, and World space.

Question 13: What does the 'NLA Editor' (Non-Linear Animation) in Blender allow?

A timeline for particles that don't follow linear motion
Editing audio non-linearly
Creating non-looping animations automatically
Non-destructive blending and layering of multiple animation actions on a single object (Correct answer)

Correct answer: Non-destructive blending and layering of multiple animation actions on a single object

The NLA Editor lets you stack, blend, and reuse animation Actions as NLA strips on multiple tracks, enabling complex animation without destroying original actions.

Question 14: What does 'Inherit Rotation' toggled off on a bone in Blender mean?

The bone ignores all constraints
The bone inherits only scale, not rotation
The bone cannot be keyframed
The bone does not inherit rotation from its parent bone, keeping a fixed orientation in world space (Correct answer)

Correct answer: The bone does not inherit rotation from its parent bone, keeping a fixed orientation in world space

When Inherit Rotation is disabled, the bone maintains its world-space orientation regardless of how its parent bone rotates.

Question 15: What is the role of the 'Normal Map' node in Blender's shader system?

It bakes normals to a texture
It inverts face normals
It generates procedural normals
It converts a tangent-space normal map texture into usable normal vectors for shading (Correct answer)

Correct answer: It converts a tangent-space normal map texture into usable normal vectors for shading

The Normal Map node decodes a tangent-space normal map image so it can be plugged into shaders to fake surface detail.

Question 16: How do you maximize/full-screen a viewport area in Blender?

Press F11
Press Ctrl+Space or hover and press ~ (Correct answer)
Press Ctrl+F
Double-click on the area header

Correct answer: Press Ctrl+Space or hover and press ~

Pressing Ctrl+Space (or using the tilde key menu) maximizes the hovered area to fill the window.

Question 17: What do 'Face Sets' allow you to do in Blender's Sculpt Mode?

Generate automatic level-of-detail meshes for game export
Assign separate material slots to groups of polygon faces
Assign multiple UV map regions to different areas of the mesh
Isolate and work on distinct regions of the mesh independently, with optional hiding (Correct answer)

Correct answer: Isolate and work on distinct regions of the mesh independently, with optional hiding

Face Sets color-code mesh regions so you can hide, isolate, or restrict sculpting operations to specific areas, making complex mesh management easier.

Question 18: Sergey Sharybin is currently developing a new......

Camera tracking tool (Correct answer)
Sculpting tool
Render engine
Game engine

Correct answer: Camera tracking tool

Explanation: Sergey Sharybin is working on a camera tracking tool.

Question 19: What does the 'Bevel' operation (Ctrl+B) do in Blender?

Extrudes edges outward
Merges nearby vertices
Smooths vertex normals
Chamfers edges by creating new geometry along selected edges (Correct answer)

Correct answer: Chamfers edges by creating new geometry along selected edges

Ctrl+B bevels selected edges by replacing them with angled faces, creating chamfered or rounded edges.

Question 20: What is a 'Subdivision Surface' modifier primarily used for?

Creating hard-surface bevels
Smoothing and adding resolution to low-poly meshes (Correct answer)
Reducing polygon count
Generating UV seams

Correct answer: Smoothing and adding resolution to low-poly meshes

The Subdivision Surface modifier recursively divides faces to create smoother, higher-resolution meshes.

Question 21: In Blender Shader Editor, what does the 'Mix Shader' node do?

Mixes two color inputs by multiplication
Blends two shader inputs together using a factor (Correct answer)
Converts between shader types
Mixes emission and diffuse by wavelength

Correct answer: Blends two shader inputs together using a factor

The Mix Shader node blends two shaders using a Fac (factor) value, allowing you to combine materials like mixing glass and diffuse.

Question 22: What does the 'Film > Transparent' checkbox do in Blender's Render Properties?

Renders the background as transparent (alpha channel) instead of black or the world color (Correct answer)
Makes all materials transparent
Enables transparent shadows
Makes the camera lens transparent

Correct answer: Renders the background as transparent (alpha channel) instead of black or the world color

Enabling Film Transparent renders the background as an alpha-transparent PNG, allowing the render to be composited over other images.

Question 23: In Blender, what is 'snapping' (Shift+Tab) used for?

Merging two objects together
Snapping keyframes to frame boundaries
Locking object movement to grid points, face centers, edges, or other geometry (Correct answer)
Snapping camera to a specific angle

Correct answer: Locking object movement to grid points, face centers, edges, or other geometry

Snapping constrains transforms so that objects or elements lock onto grid increments, vertices, edges, faces, or other snap targets.

Question 24: What does the Inflate/Deflate brush do when applied to a mesh in Blender?

Moves vertices outward or inward along their individual surface normals (Correct answer)
Scales the entire mesh up or down uniformly
Adds or removes edge loops evenly across the mesh
Creates bubble-like cavities on the mesh surface

Correct answer: Moves vertices outward or inward along their individual surface normals

The Inflate brush pushes vertices along their normals to puff up the surface, while holding Ctrl inverts it to deflate (pull inward along normals).

Question 25: What does pressing Numpad 0 do in Blender's 3D Viewport?

Switches to camera view (Correct answer)
Toggles orthographic mode
Zooms to fit all objects
Resets the view

Correct answer: Switches to camera view

Numpad 0 sets the 3D Viewport to the active camera's perspective.

Question 26: What does a 'UV Map' node in Blender's shader editor provide?

Generates procedural textures
Outputs vertex colors
Provides UV coordinates for placing textures on a mesh (Correct answer)
Creates UV-based lighting

Correct answer: Provides UV coordinates for placing textures on a mesh

The UV Map node outputs the UV coordinates of a specified UV map, used to project image textures onto mesh surfaces.

Question 27: What does the 'Dyntopo' (Dynamic Topology) feature do in Blender sculpting?

Generates new geometry dynamically as you sculpt, adding detail where needed (Correct answer)
Mirrors sculpting strokes across a symmetry axis
Applies a Subdivision Surface modifier to the mesh
Creates UV maps automatically as you paint

Correct answer: Generates new geometry dynamically as you sculpt, adding detail where needed

Dyntopo dynamically subdivides or collapses mesh geometry in real time as you sculpt, allowing detail to be added exactly where brush strokes are applied.

Question 28: What does the 'Emission' shader node do in Blender?

Emits particles from the surface
Controls transparency
Makes the surface emit light of a specified color and strength (Correct answer)
Absorbs all incoming light

Correct answer: Makes the surface emit light of a specified color and strength

The Emission shader makes a surface appear to glow and emit light, and in Cycles it can actually illuminate other objects.

Question 29: What is 'Bendy Bones' (B-Bones) in Blender?

Bones with soft body physics
Circular bones for limb rolling
Bones that can display as segments with curve handles for smooth arc deformations (Correct answer)
Bones that bend automatically with gravity

Correct answer: Bones that can display as segments with curve handles for smooth arc deformations

Bendy Bones (B-Bones) display as curved segments and use in-handle and out-handle controls to create smooth, arc-like deformations with fewer bones.

Question 30: Because nothing is pre-programmed in the software, everything in a 3D scene must be animated manually or calculated by the computer. What is the name of the algorithm that simulates real-world effects like gravity, wind, liquids, and collisions?

Real world events
Simulations
Motions
Dynamics (Correct answer)

Correct answer: Dynamics

Explanation: Wind, liquids, smoke, gravity, and collisions are all created using dynamics—basically anything that would be too time consuming to manually draw. The following is a real-life illustration of dynamics. As if an explosion had occurred, I'm modeling a damaged wall. After that, you can add a collision object and animate it through the pre-cut wall. To react to the collision, you'd apply a hard dynamic to the wall. The scenario would be subjected to gravity, which, if you recall from Physics class, has a numerical value of -9.8 m/s2. Then, to prevent the wall and all of its shattered components from plummeting into oblivion due to gravity's effects, you create a ground dynamic plane. You calculate the interaction and evaluate the outcomes after applying all of these dynamics and tweaking a few settings under each tab.

Question 31: What is an 'HDRI' (High Dynamic Range Image) used for in Blender rendering?

High-definition rendering output format
Applying high-resolution textures to objects
A shader node for boosting material brightness
Providing realistic 360° environment lighting and reflections for a scene (Correct answer)

Correct answer: Providing realistic 360° environment lighting and reflections for a scene

HDRIs are 360° panoramic images with extended brightness range used as world environment maps to provide realistic image-based lighting (IBL).

Question 32: What does the 'Bloom' effect in Eevee do?

Bakes lighting into textures automatically
Adds a glow/halo around bright areas of the render, simulating lens optical bloom (Correct answer)
Expands the render resolution
Creates caustic light effects

Correct answer: Adds a glow/halo around bright areas of the render, simulating lens optical bloom

Eevee's Bloom effect creates a soft luminous glow around high-intensity pixels, simulating the bloom seen through real camera lenses.

Question 33: What is 'Motion Blur' in Blender rendering used for?

Blurring still images for artistic effect
Simulating the smearing effect of fast-moving objects as captured by a real camera shutter (Correct answer)
Reducing polygon detail on moving objects
Blurring background objects for depth of field

Correct answer: Simulating the smearing effect of fast-moving objects as captured by a real camera shutter

Motion Blur simulates the trailing smear of fast-moving objects by sampling their position over the shutter time, matching real camera behavior.

Question 34: Light bounces off of items in the actual world to illuminate a region. This real-world light simulation in 3D software is incredibly render expensive on the computer, yet it generates stunning effects. Can you guess what this simulation is called by most software?

Radiosity (Correct answer)
Volumetrics
Hypervoxels
Dynamics

Correct answer: Radiosity

Explanation: The calculated bouncing of light within a space to light a computer scene is known as radiosity. The end result is stunning, giving the artificially manufactured items a more realistic feel. The only disadvantage is that the render time is frequently doubled by a factor of 10 or more. Pixar is the king of radiosity, in my opinion. The lighting in "Ratatouille" blew me away the first time I saw it; it was so dramatic and realistic. Later, Pixar produced a technical paper detailing how they illuminated the scenes and how radiosity played a significant role in the film's tone.

Question 35: Where are Blender sculpt brush settings such as Radius and Strength primarily adjusted?

The Tool Settings header bar or the active Tool Properties panel (Correct answer)
The N-panel (side panel) Properties tab
The Shader Editor node network
The UV Editor toolbar

Correct answer: The Tool Settings header bar or the active Tool Properties panel

Sculpt brush parameters like Radius, Strength, and brush type appear in the Tool Settings header at the top of the 3D Viewport and in the Tool tab of the Properties panel.

Question 36: Which selection mode in Edit Mode allows you to select entire connected flat surfaces (islands)?

Edge Select
Vertex Select
Linked Flat Faces select
Face Select with L key (Correct answer)

Correct answer: Face Select with L key

In Face Select mode, pressing L (or Shift+L) selects linked geometry under the cursor, while Select Linked Flat Faces groups connected coplanar faces.

Question 37: What is the 'Decimate' modifier used for in Blender?

Texturing with a grid pattern
Reducing polygon count while preserving overall shape (Correct answer)
Adding 10% more polygons for detail
Splitting faces into triangles

Correct answer: Reducing polygon count while preserving overall shape

The Decimate modifier reduces a mesh's polygon count automatically, useful for optimizing high-poly sculpts or models.

Question 38: In Blender's Shader Editor, what node is the core of most material setups?

Principled BSDF (Correct answer)
Diffuse BSDF
Mix Shader
Emission Shader

Correct answer: Principled BSDF

The Principled BSDF combines multiple shading models (diffuse, specular, metallic, etc.) into one artist-friendly node.

Question 39: What does 'Samples' setting control in Cycles rendering?

Sampling rate for audio in the VSE
Image output resolution
Number of render passes to combine
The number of light paths traced per pixel, affecting noise and quality (Correct answer)

Correct answer: The number of light paths traced per pixel, affecting noise and quality

Higher sample counts reduce noise in Cycles by averaging more light path calculations per pixel, improving image quality at the cost of render time.

Question 40: In Blender's Principled BSDF, what does 'Subsurface' scattering simulate?

Underground shadow computation
Light penetrating slightly into translucent surfaces like skin or wax (Correct answer)
Light reflecting under water
Sub-pixel rendering detail

Correct answer: Light penetrating slightly into translucent surfaces like skin or wax

Subsurface scattering simulates light that penetrates the surface, scatters inside, and exits at a different point — essential for skin, wax, and jade.

Question 41: What is the purpose of 'Light Probes' in Blender's Eevee render engine?

Probing for light leaks in geometry
Testing light brightness before final render
Placing physical light sensors in the scene
Capturing scene lighting information for indirect lighting, reflections, and irradiance in Eevee (Correct answer)

Correct answer: Capturing scene lighting information for indirect lighting, reflections, and irradiance in Eevee

Light Probes (Irradiance Volume, Reflection Cubemap, Reflection Plane) bake indirect lighting data that Eevee uses to simulate global illumination.

Question 42: What is a 'Constraint' in Blender animation (for objects, not bones)?

A budget limit for scene complexity
A rule that restricts or automates an object's transform based on another object or condition (Correct answer)
A physics constraint joining two rigid bodies
A limit on keyframe count per object

Correct answer: A rule that restricts or automates an object's transform based on another object or condition

Object Constraints (like Track To, Copy Location, Follow Path) automate how an object moves, rotates, or scales relative to another target.

Question 43: What is the purpose of the 'Bone Groups' feature in Blender?

Organizing bones into physics groups
Defining bone collision groups
Assigning bones into color-coded groups for visual organization in Pose Mode (Correct answer)
Grouping bones into separate armature objects

Correct answer: Assigning bones into color-coded groups for visual organization in Pose Mode

Bone Groups let riggers color-code and organize bones visually in the viewport, making complex rigs easier to navigate in Pose Mode.

Question 44: Which Blender modifier automatically mirrors geometry across a specified axis?

Array Modifier
Mirror Modifier (Correct answer)
Symmetrize Modifier
Lattice Modifier

Correct answer: Mirror Modifier

The Mirror Modifier duplicates mesh data reflected across the object's local axis, ideal for symmetric modeling.

Question 45: In Blender's Properties panel, which tab contains the render engine setting?

Output Properties
Render Properties (camera icon) (Correct answer)
World Properties
Scene Properties

Correct answer: Render Properties (camera icon)

The Render Properties tab (camera icon) is where you choose the render engine (Eevee, Cycles, etc.).

Question 46: What does the 'Alpha' channel in Blender's Principled BSDF control?

Surface transparency (0 = fully transparent, 1 = fully opaque) (Correct answer)
Ambient occlusion strength
Anti-aliasing level
Anisotropy direction

Correct answer: Surface transparency (0 = fully transparent, 1 = fully opaque)

The Alpha input controls the overall opacity/transparency of the material, requiring appropriate blend mode settings to be visible.

Question 47: In Blender's shader nodes, what does the 'ColorRamp' node do?

Maps an input value to a gradient of colors, remapping shades or creating masks (Correct answer)
Adjusts saturation and hue simultaneously
Converts between color spaces
Generates rainbow gradients procedurally

Correct answer: Maps an input value to a gradient of colors, remapping shades or creating masks

The ColorRamp node maps a scalar input to a customizable color gradient, commonly used to create masks or remap texture values.

Question 48: What does the 'Armature' modifier do when applied to a mesh in Blender?

Adds an automatic skeleton to the mesh
Deforms the mesh according to the linked armature's bone transforms (Correct answer)
Bakes all bone animations to shape keys
Creates a rigid body simulation for bones

Correct answer: Deforms the mesh according to the linked armature's bone transforms

The Armature modifier binds a mesh to an armature so that moving the armature's bones deforms the mesh accordingly.

Question 49: What does 'Merge by Distance' (formerly 'Remove Doubles') do in Blender?

Merges vertices that are within a specified distance of each other (Correct answer)
Removes duplicate objects in the scene
Deletes every other edge loop
Reduces the polygon count by half

Correct answer: Merges vertices that are within a specified distance of each other

Merge by Distance combines any vertices that fall within the defined threshold distance, cleaning up overlapping geometry.

Question 50: What does the 'Shader to RGB' node enable in Blender (Eevee only)?

Converts material colors to hexadecimal
Converts shader output to usable image textures
Samples a shader's color output for use in further node operations, enabling toon/non-photorealistic effects (Correct answer)
Bakes lighting to vertex colors

Correct answer: Samples a shader's color output for use in further node operations, enabling toon/non-photorealistic effects

Shader to RGB converts a shader's shading calculation into an RGB color that can be processed further, enabling cel-shading effects in Eevee.

Question 51: How will you be able to reveal all of the hidden objects?

Press the ALT and H keys (Correct answer)
Press the SHIFT and H keys
Press the ALT and S keys
Press the SHIFT and S keys

Correct answer: Press the ALT and H keys

The correct answer: Press the ALT and H keys

Question 52: What is 'Render Baking' in Blender typically used for?

Transferring lighting/shading information from a Cycles render onto texture maps for real-time use (Correct answer)
Compressing render output files
Exporting baked animations to FBX
Locking render settings before a final batch render

Correct answer: Transferring lighting/shading information from a Cycles render onto texture maps for real-time use

Render Baking computes Cycles lighting, normals, AO, or diffuse color and saves it into image textures, enabling high-quality looks in real-time engines or other apps.

Question 53: What does the Scrape/Peaks brush do in Blender's Sculpt Mode?

Applies procedural noise to roughen the mesh surface
Flattens high points (peaks) while leaving recessed areas untouched, or vice versa depending on direction (Correct answer)
Cuts an open hole through the mesh geometry
Clones a selected mesh region to another location on the model

Correct answer: Flattens high points (peaks) while leaving recessed areas untouched, or vice versa depending on direction

The Scrape brush flattens vertices that protrude above a reference plane defined by the brush center, making it useful for flattening surfaces and removing lumps while preserving valleys.

Question 54: Which keyboard shortcut is used to interactively resize the sculpt brush in Blender?

B
S
F (Correct answer)
R

Correct answer: F

Pressing F in Sculpt Mode allows you to drag the mouse to resize the brush radius interactively before the next stroke.

Question 55: What does 'Ambient Occlusion' (AO) simulate in Blender rendering?

Ambient sound interference in animation
Overall scene brightness from ambient light
The soft shadowing that occurs in crevices and corners where indirect light has less access (Correct answer)
Occlusion of camera view by nearby objects

Correct answer: The soft shadowing that occurs in crevices and corners where indirect light has less access

AO darkens areas like creases, corners, and contact points where ambient light is blocked by nearby geometry, adding depth to scenes.

Question 56: What are the basic forms needed to construct an object, such as cubes, cylinders, and circles?

Parts
Pieces
Shapes
Primitives (Correct answer)

Correct answer: Primitives

Explanation: The majority of modeling is done with polygons that have been joined and molded, but you will occasionally need to add a conventional shape to an object. Primitive forms are the most common shapes. Every piece of software has a similar collection of primitives, but some may be missing. A box, a ball, a disc, a cone, and a capsule are included in a sample standard set from Lightwave 3D, my preferred software. A drop-down menu of another fifteen or so primitives is available.

Question 57: In Blender, what does pressing 'H' do to selected objects?

Toggles high-poly mode
Opens the header menu
Freezes the object
Hides the selected objects (Correct answer)

Correct answer: Hides the selected objects

Pressing H hides the selected object(s) from the viewport; Alt+H unhides all.

Question 58: Which keyboard shortcut is used to toggle X-axis symmetry in Blender's Sculpt Mode?

X (Correct answer)
S
M
G

Correct answer: X

Pressing X in Sculpt Mode toggles symmetry along the X axis, mirroring brush strokes to the opposite side of the mesh.

Question 59: What is the most common name for the process of creating an item on a computer in 3D space?

Surfacing
3D Drawing
Modeling (Correct answer)
Sculpting

Correct answer: Modeling

Explanation: The procedure is commonly referred to as "modeling," believe it or not. Essentially, it entails joining four point polygons within the software and shifting points to shape the desired object. It's a fascinating but time-consuming procedure because the only forms you can use in the program aside from polygons are primitives, which are basic objects like circles, cylinders, and cubes.

Question 60: What does the 'Roughness' input in the Principled BSDF node control?

Subsurface scattering radius
Bump intensity
How diffuse or shiny the specular reflection appears (Correct answer)
Surface displacement height

Correct answer: How diffuse or shiny the specular reflection appears

Roughness controls how sharp or blurry the specular reflections are — 0 is mirror-like, 1 is fully diffuse.

Blender 3D Software Certification

Official Blender certification exam testing proficiency across core 3D production skills including modeling, animation, sculpting, rigging, shading, and rendering within the Blender software suite.

Questions

60 min

Time Limit

75%

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