DOEACC Society 2006 DOEACC A Level A10.3-R3 Computer Graphics ( ) - Question Paper

A10.3-R3: COMPUTER GRAPHICS
NOTE:
1. There are 2 PARTS in this Module/Paper. PART 1 contains 4 ques.
and PART 2 contains 5 ques..
2. PART 1 is to be answered in the TEAR-OFF ans SHEET only, attached to
the ques. paper, as per the instructions contained therein. PART 1 is NOT to
be answered in the ans book.
3. Maximum time allotted for PART 1 is 1 HOUR. ans book for PART TWO
will be supplied at the table when the ans sheet for PART 1 is returned.
However, candidates, who complete PART 1 earlier than 1 hour, can collect the
ans book for PART 2 immediately after handing over the ans sheet for
PART ONE.
TOTAL TIME: three HOURS TOTAL MARKS: 100
(PART 1 – 40; PART 2 – 60)
PART ONE
(Answer all the questions)
1. every ques. beneath provide a multiple option of answers. select the most
improper 1 and enter in the “tear-off” ans sheet attached to the ques.
paper, subsequent instructions therein. (1 x 10)
1.1 A “Picking” Input Device is an example of a
A) Sampling Based Input Device
B) Request Based Input Device
C) Physical Input Device
D) Logical Input Device
1.2 Orthographic views are created by
A) Ignoring the z component of a model
B) Moving the camera infinitely far along the axis of projection
C) Mapping the current point position along similar triangles to the viewing plane
D) None of the above
1.3 This projection technique does NOT have the direction of projection perpendicular to the
viewing plane.
A) Orthographic Parallel Projection
B) Axonometric Parallel Projection
C) Oblique Parallel Projection
D) All of the above
1.4 Antialiasing techniques are used to accurate aliasing errors that are seen as
A) Jaggies
B) Staircasing
C) Missing or malformed polygons
D) Disintegrated textures
1.5 JPEG images
A) Can hold more colours than GIF images
B) Support background transparency
C) Are not supported by Netscape or Microsoft browsers
A10.3-R3 Page one of five July, 2006
D) Are suitable for black and white line drawings
A10.3-R3 Page two of five July, 2006
1.6 The process of creating computer animation by specifying a number of model
poses and allowing the computer to interpolate these poses to produce smooth
movement is called
A) stop motion animation
B) keyframing
C) rotoscoping
D) rendering
1.7 B-spline curves allow-
A) Only the 1st order derivatives to be continuous at the end point of the curve.
B) Only the 2nd order derivatives to be continuous at the end point of the curve.
C) Both the 1st and 2nd order derivatives to be continuous at the end point of the
curve.
D) 1st derivative at 1 end and 2nd derivative at the other end of the curve.

Earning:   Approval pending.