Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

A dotted line can be displayed by generating(a) Very short dashes with spacing equal to and greater than dash size(b) Very long dashes with spacing equal to or greater than dash size(c) Very short dashes with spacing equal to and greater than dash size(d) Dots

Answer» The correct option is (c) Very short dashes with spacing equal to and greater than dash size

For explanation I would say: Very long dashes with spacing equal to or greater than dash size can displays dotted line.
Discussion
2.

Expansion of line DDA algorithm is(a) Digital difference analyzer(b) Direct differential analyzer(c) Digital differential analyzer(d) Data differential analyzer

Answer» Right option is (c) Digital differential analyzer

To explain I would say: DDA stands for digital differential analyzer.
Discussion
3.

What happens to intensity if an area of overlapping increases?(a) Intensity remains same(b) Intensity decreases(c) Intensity increases(d) Can't say anything

Answer» Right answer is (c) Intensity increases

Explanation: When the line covers pixel completely the intensity is a maximum while when the line doesn’t touch the pixel the intensity is zero. Hence we can say, the intensity is directly proportional to the overlapping area.
Discussion
4.

On raster system, lines are plotted with(a) Lines(b) Dots(c) Pixels(d) None A of the mentioned

Answer» Correct answer is (c) Pixels

Easiest explanation: Using pixels lines can be plotted.
Discussion
5.

An accurate and efficient raster line-generating algorithm is(a) DDA algorithm(b) Mid-point algorithm(c) Parallel line algorithm(d) Bresenham'sline algorithm

Answer» Correct option is (d) Bresenham’s line algorithm

For explanation I would say: Bresenham’s line algorithm is a very efficient and accurate algorithm.
Discussion
6.

In color raster system, the number of color choices available depends on(a) colors in frame buffer(b) Amount of storage provided per pixel in frame buffer(c) RGB color(d) Neither a nor b

Answer» Right choice is (b) Amount of storage provided per pixel in frame buffer

For explanation I would say: The amount of storage provided per pixels in frame buffer provides verity range of colors.
Discussion
7.

A particular set of attribute values for a primitive on each output device is chosen by specifying appropriate table index is known as?(a) Individual attribute(b) Unbundled attribute(c) Bundled attribute(d) A or B

Answer» Correct option is (c) Bundled attribute

Easy explanation: Bundle attributes specifies group of attribute values. And these values can be bundled into the workstation table.
Discussion
8.

The process of filling an area with rectangular pattern is called(a) Tiling(b) Linear fill(c) Tint-fill(d) Soft-fill

Answer» Right option is (a) Tiling

To explain: Rectangular fill pattern is called tiling or tiling pattern.
Discussion
9.

Thick line drawn with(a) Butt caps(b) Round caps(c) Projecting square caps(d) All of the mentioned

Answer» Right choice is (d) All of the mentioned

The explanation: None.
Discussion
10.

Raster curves of various widths can be displayed using(a) Horizontal or vertical spans(b) Horizontal spans(c) Vertical spans(d) Horizontal and vertical spans

Answer» Right choice is (a) Horizontal or vertical spans

To explain I would say: Raster curves of various widths can be displayed using Horizontal or vertical spans.
Discussion
11.

A table for which, a primitive defines groups of attribute values to be used when displaying that primitive on a particular output device is called(a) Bundle table(b) Index table(c) Both a and b(d) None of these

Answer» The correct answer is (a) Bundle table

To explain: None.
Discussion
12.

In which method, fixed pattern of a line is used to generate characters?(a) Stroke method(b) Bitmap method(c) Starbust method(d) Dot-matrix method

Answer» Right answer is (c) Starbust method

To elaborate: In Starbust method, a combination of 24bit line segment is used. It is a method in which there is a particular pattern where only 24 strokes are defined for character generation.
Discussion
13.

One of the method for displaying thick curves is(a) Curve slope(b) Curve width(c) Curve cap(d) Only c

Answer» The correct choice is (a) Curve slope

The explanation is: This method fills the area b/w 2 parallel curves, whose separation distance=desired width.
Discussion
14.

The choice between a bundled attribute or an unbundled attribute is made by switch called?(a) Aspect flag(b) Aspect ratio(c) Aspect source flag(d) Aspect destination flag

Answer» The correct answer is (c) Aspect source flag

The best explanation: We can chose any one of the above attributes by setting switch for each of the attributes.
Discussion
15.

Hollow areas are displayed using only the(a) Boundary outline(b) Line-drawing routine(c) Hatched patterns(d) Closed poly line

Answer» The correct option is (a) Boundary outline

Easy explanation: Using boundary outline the hollow areas can be displayed.
Discussion
16.

In which method, graph is used in form of line to line?(a) Stroke method(b) Bitmap method(c) Starbust method(d) Dot-matrix method

Answer» The correct option is (a) Stroke method

To explain I would say: In Stroke method, graph is drawn in the form of line by line. Line drawing algorithm DDA follows this method for line drawing.
Discussion
17.

Table entries for bundled area-fill attributes are set using the function(a) setInteriorRepresentation (ws, fi, fs, pi, fc)(b) SetInteriorRepresentation ()(c) Only b(d) Both a and b

Answer» Right answer is (a) setInteriorRepresentation (ws, fi, fs, pi, fc)

The explanation: The function setInteriorRepresentation (ws, fi, fs, pi, fc) can be used to set the bundled area-fill attributes.
Discussion
18.

The operator that is used for combining a fill pattern with a background pattern is(a) AND operator(b) OR operator(c) X-OR operator(d) All of these

Answer» Right choice is (d) All of these

For explanation: The pattern and background colors can be combined using Boolean operators.
Discussion
19.

If we want to display constant-length dashes, then we need to do the following.(a) We need to adjust the number of pixels plotted in each dash(b) We need to adjust the number of dots(c) We must use line-type functions(d) Neither a nor c

Answer» Right choice is (a) We need to adjust the number of pixels plotted in each dash

To elaborate: Number of pixels plotted in each dash, will displays constant-length dashes.
Discussion
20.

What is the effect of weighted area sampling on adjacent pixels?(a) Intensity is increased(b) Intensity is decreased(c) Contrast is increased(d) Contrast is decreasedI had been asked this question in an interview.This intriguing question originated from Area Sampling in chapter Graphics Primitives of Computer Graphics

Answer» CORRECT choice is (d) Contrast is decreased

The best explanation: The net effect of WEIGHTED area SAMPLING is to decrease the contrast of adjacent PIXELS. This gives a lot of help in order to PROVIDE smooth transactions.
Discussion
21.

What is the name of the effect that causes different signals to become indistinguishable?(a) Aliasing(b) Anti-aliasing(c) Sampling(d) Staircase effectI had been asked this question during an interview.I would like to ask this question from Area Sampling in division Graphics Primitives of Computer Graphics

Answer» RIGHT choice is (a) Aliasing

Explanation: When the RESOLUTION is too LOW, visual stair-stepping of edges occurs in an image. That effect is called aliasing.
Discussion
22.

The technique of setting the intensity proportional to the amount of area covered is used in weighted area sampling.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.My question is taken from Area Sampling topic in chapter Graphics Primitives of Computer Graphics

Answer»

Right ANSWER is (b) False

To elaborate: The TECHNIQUE of setting the INTENSITY proportional to the amount of area covered is used in unweighted area SAMPLING. This technique produces noticeably BETTER results than others.
Discussion
23.

What happens to intensity if an area of overlapping increases?(a) Intensity remains same(b) Intensity decreases(c) Intensity increases(d) Can’t say anythingI got this question in unit test.I need to ask this question from Area Sampling topic in portion Graphics Primitives of Computer Graphics

Answer»

Right answer is (c) Intensity increases

Explanation: When the line COVERS pixel completely the intensity is a maximum while when the line doesn’t TOUCH the pixel the intensity is zero. HENCE we can say, the intensity is directly PROPORTIONAL to the overlapping AREA.
Discussion
24.

Which of the following is NOT a type of area sampling?(a) Weighted area sampling(b) Unweighted area sampling(c) Anti-aliasing(d) Point samplingThe question was posed to me by my school principal while I was bunking the class.My doubt is from Area Sampling topic in division Graphics Primitives of Computer Graphics

Answer»

Right OPTION is (d) Point sampling

To elaborate: Weighted and unweighted AREA sampling are types of area sampling classified on the BASIS of PROPORTIONALITY of intensity. Anti-aliasing is another name of unweighted area sampling whereas, point sampling is not a type of area sampling.
Discussion
25.

The equal area in area sampling contributes _______________(a) Equal intensity(b) Greater intensity(c) Lower intensity(d) Area is not dependent on the intensityThis question was addressed to me at a job interview.My question is taken from Area Sampling in division Graphics Primitives of Computer Graphics

Answer»

The correct answer is (a) Equal intensity

For EXPLANATION: The equal area CONTRIBUTES to equal intensity in area SAMPLING. Only the total AMOUNT of overlapped area matters, regardless of the distance between the pixel’s centre.
Discussion
26.

What is lower bound on the sampling rate known as?(a) Syquist rate(b) Nyquist rate(c) Hartley rate(d) Sampling rateI had been asked this question during an online interview.My question is based upon Area Sampling in division Graphics Primitives of Computer Graphics

Answer»

Right choice is (b) Nyquist RATE

Best explanation: Sampling theory tells us that a signal can be reconstructed by its samples. The original signal is sampled at a FREQUENCY larger than TWICE. This sampling rate is CALLED Nyquist rate.
Discussion
27.

A signal can also be represented as ____________________(a) Amplitude domain(b) Signal domain(c) Frequency domain(d) Phase domainI had been asked this question during an interview.My question is taken from Area Sampling in division Graphics Primitives of Computer Graphics

Answer»

Right choice is (c) Frequency domain

The explanation: The signal can also be REPRESENTED as a frequency domain, that is why we MAY represent it as a sum of TWO DIFFERENT sine waves.
Discussion
28.

Line should set an intensity of only a single pixel in a column to black.(a) True(b) FalseI had been asked this question by my college professor while I was bunking the class.Question is taken from Area Sampling topic in section Graphics Primitives of Computer Graphics

Answer»

Right choice is (b) False

Explanation: A LINE should not set an INTENSITY of a single pixel in a COLUMN to BLACK, but rather should contribute some amount of intensity to each pixel in the column, whose area it intersects.
Discussion
29.

We can think a line as a _____________________ in the grid.(a) Parallelogram(b) Rectangle(c) Circle(d) TriangleThe question was posed to me in an interview for job.My question is from Area Sampling topic in division Graphics Primitives of Computer Graphics

Answer»

Correct option is (b) Rectangle

For explanation: A line can be viewed as a rectangle of defined thickness. It covers a DESIRED AREA in the GRID. Even the THINNEST horizontal line has a thickness of one pixel.
Discussion
30.

Font colours can be changed using character generators.(a) True(b) FalseI got this question in an internship interview.The origin of the question is Character Generation in chapter Graphics Primitives of Computer Graphics

Answer»

Right choice is (a) True

For EXPLANATION I would SAY: Simple SYSTEMS OFFER eight COLOURS: black, white, yellow, red, magenta, blue, cyan and green. More sophisticated systems offer millions of colours.
Discussion
31.

Character generators can produce _________________(a) Different type size but same fonts(b) Same type size but different fonts(c) Same type size and fonts(d) Different type size and fontsI got this question during an interview for a job.My enquiry is from Character Generation in division Graphics Primitives of Computer Graphics

Answer» RIGHT choice is (d) Different type size and fonts

For explanation: Character generators can produce different type SIZES and fonts depending on the REQUIREMENT. You can alter the type, size as WELL as COLOUR of fonts too using character generators.
Discussion
32.

Which method has the poorest character quality?(a) Stroke method(b) Bitmap method(c) Starbust method(d) Dot-matrix methodThe question was posed to me in examination.The question is from Character Generation in portion Graphics Primitives of Computer Graphics

Answer»

The correct answer is (c) Starbust method

Easy explanation: CHARACTER quality is POOR in Starbust method and is worse for CURVED characters. Whereas in Bitmap method and stroke method, it is very good as they USE NEW technologies.
Discussion
33.

In which method, fixed pattern of a line is used to generate characters?(a) Stroke method(b) Bitmap method(c) Starbust method(d) Dot-matrix methodThe question was asked in an interview.Enquiry is from Character Generation in division Graphics Primitives of Computer Graphics

Answer»

Right ANSWER is (c) Starbust METHOD

To ELABORATE: In Starbust method, a combination of 24bit line SEGMENT is used. It is a method in which there is a particular PATTERN where only 24 strokes are defined for character generation.
Discussion
34.

In which method, graph is used in form of line to line?(a) Stroke method(b) Bitmap method(c) Starbust method(d) Dot-matrix methodI have been asked this question by my college director while I was bunking the class.This intriguing question originated from Character Generation topic in section Graphics Primitives of Computer Graphics

Answer»

The correct option is (a) Stroke METHOD

To explain I WOULD say: In Stroke method, graph is drawn in the form of line by line. Line DRAWING algorithm DDA follows this method for line drawing.
Discussion
35.

Which method of character generation is also called Dot-matrix method?(a) Stroke method(b) Bitmap method(c) Starbust method(d) There isn’t that type of methodI got this question during an internship interview.This interesting question is from Character Generation topic in section Graphics Primitives of Computer Graphics

Answer»

Right answer is (b) Bitmap method

The BEST I can explain: Bitmap method is also called a dot-matrix method as it uses arrays of dots for CHARACTER generation. These dots are the points for an array whose size is FIXED.
Discussion
36.

How many Methods of character generations are there?(a) 2(b) 3(c) 4(d) 5I got this question in an online quiz.Question is from Character Generation topic in section Graphics Primitives of Computer Graphics

Answer»

The CORRECT option is (b) 3

The EXPLANATION: There are THREE METHODS. Those 3 methods are Stroke method, Bitmap method and Starbust method. Each of them has different types of function.
Discussion
37.

Why aren’t camcorder CG used more frequently in the titler market?(a) They don’t record for longer time period(b) They use a background of video for title super imposition(c) They have low storage capacity(d) They are not economically feasibleThis question was posed to me in quiz.The query is from Character Generation in division Graphics Primitives of Computer Graphics

Answer»

The correct answer is (c) They have low STORAGE capacity

Easy explanation: They have 2 drawbacks, first is that you have to give TITLES as you shoot and second, they have very low capacity in comparison to OTHERS.
Discussion
38.

Which type of character generators are used in television production studios?(a) Hardware character generators(b) Software character generators(c) Both Hardware and software character generators can be used(d) Title generators are usedI had been asked this question in an internship interview.I'd like to ask this question from Character Generation topic in section Graphics Primitives of Computer Graphics

Answer» CORRECT choice is (a) Hardware CHARACTER generators

For explanation I would SAY: Generally, only Hardware character generators are used in television STUDIOS. They provide a key signal. While the compositing vision mixer can use an alpha channel to DETERMINE which areas of the CG video are translucent.
Discussion
39.

Is it possible to have hardware as character generator?(a) True(b) FalseI got this question in an online interview.Asked question is from Character Generation topic in chapter Graphics Primitives of Computer Graphics

Answer» RIGHT option is (a) True

Explanation: Character generators can be both HARDWARE or software. Hardware character generators are used in television studios and video editing suites, whereas software CG(s) are used in animation.
Discussion
40.

Which of the following is a video editing tool that produces an animated text which can be inserted into video streams?(a) Character generator(b) Title generator(c) Video generator(d) Animation generatorThis question was posed to me in homework.The query is from Character Generation in portion Graphics Primitives of Computer Graphics

Answer»

The correct CHOICE is (a) Character generator

Easiest EXPLANATION: Character generator also called as CG in video EDITING is the software or hardware that PRODUCES animated text video streams.
Discussion
41.

A function that allows the user to select a particular character to be as marker symbol is(a) setmarkertype (mt)(b) setMarkersymbol(mt)(c) setMarkerType (mt)(d) SETMARKER()This question was posed to me in a job interview.This intriguing question comes from Character Attributes topic in section Graphics Primitives of Computer Graphics

Answer»

The CORRECT OPTION is (c) setMarkerType (mt)

To EXPLAIN: NONE.
Discussion
42.

The orientation for a displayed character string is set according to, which of the following function?(a) Setcharacterupvector()(b) setcharacterUpvector(upvect)(c) setCharacterUpVector(upvec)(d) only bThe question was asked in quiz.The origin of the question is Character Attributes topic in division Graphics Primitives of Computer Graphics

Answer»

Right option is (c) setCharacterUpVector(upvec)

To EXPLAIN I WOULD say: According to the direction of the CHARACTER up VECTOR, the ORIENTATION for a displayed character string is set.
Discussion
43.

__________ is a single character that can be displayed in different colors and in different sizes.(a) String(b) Marker symbol(c) Only a(d) SymbolsThis question was posed to me in an interview for job.My query is from Character Attributes topic in division Graphics Primitives of Computer Graphics

Answer» CORRECT option is (b) Marker symbol

Explanation: A marker SYMBOLS can be displayed in any COLORS and in any SIZE.
Discussion
44.

The width of the text or character can be set using the function(a) setCharacterExpansionFactor (cw)(b) SetCharacterExpansionFactor (cw)(c) setCharacterFactor (cw)(d) setCharacterExpansionfactor (cw)I had been asked this question in my homework.I would like to ask this question from Character Attributes topic in section Graphics Primitives of Computer Graphics

Answer»

Correct CHOICE is (a) setCharacterExpansionFactor (cw)

The BEST I can explain: In this function the PARAMETER cw (character-width) SETS the width of the character.
Discussion
45.

When a character string is to be displayed, the which color is used to set the pixel value in frame buffer?(a) White color(b) Current color(c) Black color(d) Any colorI have been asked this question by my school teacher while I was bunking the class.This intriguing question originated from Character Attributes topic in chapter Graphics Primitives of Computer Graphics

Answer»

The correct answer is (b) CURRENT color

Best explanation: The current color is used to set the pixel value CORRESPONDING to the CHARACTER SHAPE and positions.
Discussion
46.

The distance between the bottom-line and the top-line of the character body is(a) Same for all character(b) Different for all character(c) Same for some character(d) Different for some characterThe question was posed to me in semester exam.This is a very interesting question from Character Attributes in division Graphics Primitives of Computer Graphics

Answer»

Right CHOICE is (a) Same for all CHARACTER

For EXPLANATION I would say: The DISTANCE between the bottom-line and the top-line of the character BODY is always same for all the characters.
Discussion
47.

The Character size is specified by(a) Printers(b) Compositors(c) Frame buffer(d) Both a and bThis question was posed to me in an international level competition.I want to ask this question from Character Attributes topic in chapter Graphics Primitives of Computer Graphics

Answer» CORRECT option is (d) Both a and b

For explanation I would say: The Character size is specified by PRINTERS and compositors in points where 1 point is 0.013837 INCH.
Discussion
48.

A particular font and associated styles can be set using the function(a) setTextfont (tf)(b) setfont (tf)(c) setFont (tf)(d) setTextFont()The question was posed to me in an international level competition.My query is from Character Attributes in section Graphics Primitives of Computer Graphics

Answer»

Correct choice is (a) setTextfont (tf)

EXPLANATION: The function setTextfont (tf) can be USED to set the FONT and its style. Where “tf” SPECIFIES the available fonts style.
Discussion
49.

A particular text index value is chosen with the function(a) setTextIndex()(b) settextindex(ti)(c) SetTextIndex(ti)(d) setTextIndex(ti)The question was asked in unit test.The origin of the question is Bundled Attributes topic in chapter Graphics Primitives of Computer Graphics

Answer»

Right answer is (d) setTextIndex(ti)

For explanation: The function setTextIndex(ti) is used to CHOSE the particular TEXT INDEX VALUE.
Discussion
50.

The choice between a bundled attribute or an unbundled attribute is made by switch called?(a) Aspect flag(b) Aspect ratio(c) Aspect source flag(d) Aspect destination flagThe question was posed to me during an online exam.My question is from Bundled Attributes in section Graphics Primitives of Computer Graphics

Answer»

The CORRECT answer is (c) Aspect source flag

The best EXPLANATION: We can CHOSE any one of the above ATTRIBUTES by setting switch for each of the attributes.
Discussion