Graphics Primitives: The Building Blocks of Digital Images

Question 1

Which of these shapes is NOT a basic graphics primitive?

Accepted Answer

Sphere

Answer

Point

Answer

Line

Answer

Polygon

Question 2

Regular polygons are characterized by which of the following properties?

Accepted Answer

Both equal side lengths and interior angles

Answer

Equal side lengths

Answer

Equal interior angles

Answer

Neither equal side lengths nor interior angles

Question 3

In computer graphics, what is the primary purpose of a pixel buffer?

Accepted Answer

Storage of pixel color values

Answer

Execution of image transformations

Answer

Generation of anti-aliased images

Answer

Image compression

Question 4

What fundamental distinction exists between raster and vector images?

Accepted Answer

Raster images are composed of pixels, while vector images are defined by mathematical equations.

Answer

Vector images are composed of pixels, while raster images are defined by mathematical equations.

Answer

Both raster and vector images are constructed using pixels.

Answer

Both raster and vector images are described by mathematical equations.

Question 5

Which file format is commonly used for storing 3D models?

Accepted Answer

.obj

Answer

.png

Answer

.jpg

Answer

.txt

Question 6

What is the primary role of a shader in computer graphics?

Accepted Answer

Determining the visual appearance and behavior of objects

Answer

Storing object geometry

Answer

Manipulating the pixel buffer

Answer

Generating textures

Question 7

The use of homogeneous coordinates in computer graphics primarily serves to:

Accepted Answer

Represent points at infinity

Answer

Simplify 3D transformations

Answer

Enhance image quality

Answer

Reduce computational complexity

Question 8

Bresenham's algorithm is commonly used for rasterizing:

Accepted Answer

Lines

Answer

Circles

Answer

Ellipses

Answer

Polygons

Question 9

The key distinction between pixel-based and object-based graphics lies in their storage methods:

Accepted Answer

Pixel-based graphics store individual pixels, while object-based graphics store geometric objects.

Answer

Object-based graphics store individual pixels, while pixel-based graphics store geometric objects.

Answer

They share the same storage method.

Answer

They are unrelated concepts.

Question 10

The primary benefit of using texture mapping in computer graphics is:

Accepted Answer

Enhancing surface detail

Answer

Improving rendering speed

Answer

Reducing memory usage

Answer

Simplifying geometric modeling

Question 11

Which 3D graphics primitive is a perfectly round shape?

Accepted Answer

Sphere

Answer

Cube

Answer

Cylinder

Answer

Plane

Question 12

What is the minimum number of points required to define a line segment?

Accepted Answer

2

Answer

1

Answer

3

Answer

4 or more

Question 13

What is the operation that changes an object's orientation around an axis?

Accepted Answer

Rotation

Answer

Scaling

Answer

Shearing

Answer

Reflection

Question 14

Which algorithm is specifically designed to rotate a graphics primitive around a specified axis?

Accepted Answer

Rotation Matrix Algorithm

Answer

Bresenham's Algorithm

Answer

DDA Algorithm

Answer

Midpoint Circle Algorithm

Question 15

Choose the best description of a polygon primitive:

Accepted Answer

A closed shape formed by a sequence of connected line segments

Answer

An open shape with an infinite number of vertices

Answer

A curved shape defined by a mathematical equation

Answer

A shape with only one vertex and no edges

Question 16

To calculate the slope of a line primitive defined by points (x1, y1) and (x2, y2), which formula should you use?

Accepted Answer

(y2 - y1) / (x2 - x1)

Answer

(x2 - x1) / (y2 - y1)

Answer

(x1 - y1) / (x2 - y2)

Answer

(y1 - x1) / (y2 - x2)

Question 17

Consider a 3D graphics scene. Which primitive type would be most appropriate for representing a tree trunk?

Accepted Answer

Triangle

Answer

Point

Answer

Line

Answer

Curve

Question 18

Which algorithm is used to approximate a complex curve as a set of simpler primitives?

Accepted Answer

Chaikin's algorithm

Answer

Marching cubes algorithm

Answer

Delaunay triangulation

Answer

Quadtree decomposition

Question 19

In 3D rendering, which technique typically demands more computational resources but produces more realistic images?

Accepted Answer

Ray Tracing

Answer

Rasterization

Question 20

Which graphics primitive represents a discrete point in a digital image?

Accepted Answer

Point

Answer

Line

Answer

Polygon

Answer

Curve

Question 21

What is the equation that describes a line in 2D space?

Accepted Answer

y = mx + b

Answer

x = my + b

Answer

y - mx = b

Answer

x - my = b

Question 22

Which type of polygon has the least number of vertices?

Accepted Answer

Triangle

Answer

Square

Answer

Rectangle

Answer

Pentagon

Question 23

What is the effect of anti-aliasing in computer graphics?

Accepted Answer

Smoothing the edges of objects

Answer

Increasing the resolution of images

Answer

Reducing the size of image files

Answer

Adding color to images

Question 24

Which of the following is not a property of graphics primitives?

Accepted Answer

Lighting

Answer

Geometric shape

Answer

Color

Answer

Transformations

Question 25

Which of the following is NOT a fundamental graphics primitive?

Accepted Answer

Surface

Answer

Point

Answer

Line

Answer

Polygon

Question 26

What is the minimum number of vertices required to define a polygon primitive?

Accepted Answer

3

Answer

2

Answer

4

Answer

5

Question 27

What is an advantage of using homogeneous coordinates to represent graphics primitives?

Accepted Answer

Facilitates transformation operations

Answer

Reduces computational complexity

Answer

Improves image quality

Answer

Simplifies clipping algorithms

Question 28

Which file format is commonly used to store 2D graphics primitives?

Accepted Answer

SVG

Answer

DXF

Answer

OBJ

Answer

STL

Question 29

Which of the following is not a fundamental graphics primitive?

Accepted Answer

Cube

Answer

Point

Answer

Line

Answer

Triangle

Question 30

Which algorithm is employed to fill polygons?

Accepted Answer

Scanline algorithm

Answer

Bresenham's algorithm

Answer

Midpoint circle algorithm

Answer

DDA algorithm

Question 31

What is the primary function of anti-aliasing?

Accepted Answer

To mitigate jagged edges

Answer

To enhance color accuracy

Answer

To increase resolution

Answer

To improve depth perception

Question 32

Which type of curve is defined by control points and tangent vectors?

Accepted Answer

Bézier curve

Answer

B-spline curve

Answer

Ellipse

Answer

Hyperbola

Question 33

What is the order of a Bézier curve with 'n' control points?

Accepted Answer

n - 1

Answer

n

Answer

n + 1

Answer

(n - 1)/2

Question 34

What is the purpose of clipping algorithms?

Accepted Answer

To remove objects outside the viewing volume

Answer

To color objects

Answer

To convert objects to world coordinates

Answer

To generate shadows and lighting effects

Question 35

A line segment in computer graphics is typically defined by:

Accepted Answer

Two distinct endpoints

Answer

A starting point and a length

Answer

A set of connected points

Answer

A single point and a direction

Question 36

A polygon in computer graphics is defined as:

Accepted Answer

A closed shape formed by connecting a sequence of line segments

Answer

A curved shape enclosed by a single line

Answer

A collection of random points

Answer

A set of points with a specific center

Question 37

What is the primary advantage of using polygons in computer graphics?

Accepted Answer

Ease of manipulation and rendering, making them efficient for creating and displaying complex shapes

Answer

They are the only way to represent complex shapes

Answer

They are the most efficient primitive for representing curves

Answer

They can be used to create realistic shadows

Question 38

A Bézier curve is defined by:

Accepted Answer

Control points and their associated weights, which influence the curve's shape

Answer

A series of circles with specific radii

Answer

A set of connected line segments

Question 39

Which of the following is a common application of Bézier curves in computer graphics?

Accepted Answer

Creating smooth, organic shapes like fonts and curved objects

Answer

Generating realistic textures

Answer

Defining the lighting of a scene

Answer

Representing the edges of polygons

Question 40

What is the primary difference between a line and a curve in computer graphics?

Accepted Answer

A curve is defined by a mathematical function, allowing for smooth variations, while a line is defined by two endpoints, resulting in a straight path.

Answer

A line is always straight, while a curve can be curved or straight.

Answer

A curve is used for complex shapes, while a line is used for simple shapes.