General PC Graphics MCQs

1. Select from the following choices the one that most closely completes the Shannon sampling theorem: 'The ideal samples of a continuous function contain all the information in the original function if and only if the continuous function is sampled at a frequency ________________ the highest frequency in the function.'

2. The serial execution of the processes applied to geometric primitives (text, lines, polygons, curves, and surfaces) in a graphics package to produce two-dimensional output is called its:

3. What does the term 'bezier' imply?

4. What is meant by the term crop?

5. The process of using an image described in a vector-graphics format and converting it into a bitmapped image as output on a display or printer, or as storage in a bitmapped file is known as

6. Another term for the video output device for storing the graphic image as it is being formed and later used for displaying the image is:

7. Which of the following graphical formats is/are always low-resolution (8-bit) bitmap graphics?

8. In computer graphics, a technique in which irregularities in shading are created for simulating rough textures is called:

9. Which of the following is/are typical steps in a graphical pipeline that converts three-dimensional objects for two-dimensional display or printing?

10. Which of the following techniques reduces the appearance of jagged edges of lines and edges in raster graphics?

11. The first procedure in the OpenGL pipeline is to transform a 3-D point that is defined in the object coordinate system into the world coordinate system. This step has three possible transformations: rotation, scaling, and translation. Which one of those below is typically the correct order for executing these three transformations?

12. What does the term 'constraint' imply?

13. Which of the following colors belong to the standard four-color subtractive color model used in color printing or otherwise used to describe the printing process?

14. A technique for achieving higher quality in lower-quality images is called __________. It takes advantage of an optical illusion to simulate 24-bit quality with 8-bit or 16-bit images:

15. When considering illumination from light sources, which of the following types of light sources has the same intensity in all directions:

16. Which one of the following is a data structure used to organize objects within a space, which can be used in hidden-surface removal and in ray tracing?

17. The process whereby a specific key color (often blue or green) within an image is made transparent when that image is mixed with another image is known as:

18. Which of the following vector graphics editors used to process digital graphics is/are open source, instead of being proprietary?

19. The vector-graphics package that was developed by Microsoft is:

20. Which of the following raster graphics editors used to process digital graphics and photographs is/are open source, instead of being proprietary?

21. What does the term 'stroke weight' denote?

22. The number of bits per pixel typically used for the color depth to be described as being a truecolor format is:

23. What is meant by the term fog?

24. What is meant by the term rigging?

25. Which one of the following graphics standard specifications is the main competitor to Microsoft's Direct3D (the 3D graphics API within DirectX)?

26. Which of the following graphic formats allow for animation?

27. What is meant by the term stroke?

28. Which of the following best describes the term 'vertex-vertex polygon mesh'?

29. What is meant by the term gradient?

30. _________ adds appropriately colored pixels to an image to make it seem as though more colors were present in the original.

31. A process in 2-D computer graphics whereby a closed vector path is used to mask (block) parts of an image is known as:

32. Which one of the color parameters measures how far away the color is from gray?

33. In computer animation, the entire frame is redrawn for each frame. What of the following would reduce flicker between frames?

34. What does the term 'jaggies' imply?

35. Which of the following colors belong to the most common three-color additive color model used in video displays or otherwise used to describe the physical concepts involved?

36. Which of the following file formats are popular vector-graphics formats?

37. What is meant by the term auto trace?

38. Images based upon geometric elements, such as points, curves, and surfaces, that follow mathematical equations are called:

39. In a 3-D graphics environment, the process of subdividing a surface into a mesh of smaller shapes that are easy to analyze is known as:

40. Bitmapped graphics are also known as:

41. The rendering of three-dimensional computer graphics often employs one or more approaches to model a complex four-dimensional mathematical function that defines the physical behavior of light at an opaque surface. This fundamental radiometric concept is known as the:

42. Which of the following statements about pixels are true? (Answer all that apply.)

43. What does the term 'spline' imply?

44. Which of the following is the most commonly used lighting model?

45. Which of the following is/are basic phases of creating 3-D computer graphics?

46. What does the term 'flythrough' imply?

47. What does the term 'depth sort' imply?

48. A modeling technique based upon a formal grammar whereby complex shapes are recursively generated from relatively simpleprocedures is termed as:

49. Which of the following rotation techniques gives the best results?

50. Which of the following are common shading models?

51. Of the following, select all of the techniques that could be employed in anti-aliasing:

52. Which of the following types of reflection transmits light in all direction with the same energy?

53. Which one of the following formats would provide the least amount of pixelation when its dimensions are scaled (magnified) in size?

54. What is meant by the term projection?

55. An image rendering process that builds images based upon the propagation of light rays and the effects of absorption, reflection, and refraction associated with the objects being scanned is termed as:

56. The effect that occurs when an object nearer to the viewport in 3-D space blocks (masks) another, more distant object from view is called:

57. In computer graphics, when a line or object is moved where one end or point stays fixed in position is termed as:

58. Which of the following polygon meshes is most commonly used in mesh modelling because its input data are more readily acceptable to modern hardware?