COS3712
EXAM PACK
FOR ASSISTANCE WITH THIS MODULE +27 67 171 1739
,Quizlet related to assignment 3 Q’s 13
From links sent on telegram (Most not relevant here) 13
https://quizllc.com/category/computer-graphics-mcqs/ 13
https://mcqmate.com/topic/758/cad-cam-and-automation-set-1 24
https://syllabusstudy.in/computer-graphics-mcq-1/ 44
Oct Exam 2022 - Confirmed errors in Q 1,4,8,30 & 32 (My attempt, not a memo) 48
Assignment 3 2022
Question 1
An Affine space is an extension of the vector space that includes an additional type of object:
a. The point
b. The scalar vector
c. The normal
d. The scalar field
Answer: A
Question 2
Which of the following transformations scale orient and translates an object to the desired
location in the scene?
a. Instance
b. View
c. Modelling
d. Projection
Answer: A
Question 3
Which of the following transformations takes instances of objects in object coordinated and
brings them into the world frame?
a. Modelling
b. Instance
c. View
d. Projection
Answer: A
,Question 4
In the Cohen-Sutherland line clipping algorithm an outcode can have ___ bits for
two-dimensional clipping and ___ bits for three-dimensional clipping.
a. 4,6
b. 6,8
c. 2,4
d. 1,3
Answer: A
Question 5
In ___ shading we define the normal at a vertex to be the normalized average of the normals
of the polygons that share the vertex
a. Phong
b. Gouraud
c. Constant
d. Ambient
Answer: B
Question 6
Which of the following regarding projection normalization is false?
a. Projection normalization ensures that all projections can be converted to orthogonal
projections.
b. Projection normalization distorts the objects such that the perspective projection of
the distorted objects is the same as the desired projection of the original objects.
c. The normalization process allows us to carry parallel and perspective projections with
the same pipeline.
d. During projection normalization vertices are transformed using the projection
transformation to a normalized view volume in which objects that might be visible are
contained in a cube centered at the origin.
Answer: B
Question 7
What does the following matrix represent?
0 -1 0 0
0 0 -1 0
1 0 0 0
0 0 0 1
, a. Non-uniform scaling
b. Reflection
c. Perspective projection
d. Rotation
Answer: D
Question 8
Which anti-aliasing strategy is one most subject to visible aliasing errors?
a. Point sampling
b. Linear filtering
c. Smoothing
d. Over Sampling
Answer: A
Question 9
Consider a line segment (in 3 dimensions) with endpoints a and b at (0, 1, 0) and (1, 2, 3)
respectively. What would the coordinates of vertex a be after performing scaling of the line
segment by a factor of 3 along the x-axis?
a. (0, 1, 0)
b. (3, 1, 0)
c. (3, 4, 3)
d. (0, 3, 0)
Answer: A
Question 10
If the projection plane is placed symmetrically with respect to the three principal faces that
meet at the corner of a rectangular object we have a ___ view
a. Isometric
b. Dimetric
c. Trimetric
d. Nometric
Answer: A
