Computer Graphics Basics Questions

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81.

The main task of the display processor is to digitize a picture definition given in an application program; this digitization process is known as?

A

rasterization

B

scan conversion

C

transformation

D

Both a and c

Correct Answer: B

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82.

After completion of scanning of one line, the electron beam files back to the start of next line, this process is known as?

A

horizontal retrace

B

vertical retrace

C

interleaving

D

both a and b

Correct Answer: A

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83.

the screen images is maintained by repeating scanning the same image. This process is known as?

A

refreshing of screen

B

redisplay

C

Redrawing

D

both c and b

Correct Answer: A

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84.

Refresh buffer in CRT, is used to store the picture information in the form of?

A

0`s and 1`s

B

voltage level

C

lines and curve

D

-1`s and 1`s

Correct Answer: A

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85.

A DVST uses the __ which stores the picture information as a__just behind the phosphor-coated screen?

A

pixel, voltage information 

B

charge distribution, voltage information

C

storage grid , voltage information

D

storage grid, charge distribution

Correct Answer: D

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86.

The main hardware components of a graphics workstation are?

A

CPU and Display Processor

B

plotter, joystick

C

display devices, recorder

D

input and out put device

Correct Answer: A

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87.

In random scan displays, the display processor has its own instruction set and instruction address register, Hence it is also called?

A

Display Processing Unit ( DPU)

B

Graphics Controller

C

Both A and B

D

to store processor clock cycles

Correct Answer: C

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88.

In random scan display__is provided for scan conversion algorithms?

A

local memory

B

register

C

flash memory

D

no local memory

Correct Answer: D

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89.

Frame buffer can implement using?

A

rotating random access semiconductor memory or shift registers

B

shift registers only

C

rotating random access semiconductor memory only

D

ROM

Correct Answer: A

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90.

What is pixel?

A

A term of graphic or video display

B

A software

C

A hardware

D

A point

Correct Answer: A

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