Deck 3: Images

Question 1

Describe the color depth of a PNG file.

Answer 1

The PNG format uses palettes (24 bits or 32 bits if an "alpha" mask is included for transparency) and is lossless. It was developed for the Internet and works with three channels of 256 discrete shades of each color (red, green, and blue). A PNG file only supports the RGB color space and can contain millions of colors.

Question 2

Which lossless file format allows for millions of colors in its palette?

A) GIF
B) PNG
C) JPEG
D) PDF

Answer 2

B

Question 3

Which of the following is a universal bitmap format used in desktop publishing?

A) TIFF
B) AI
C) DXF
D) KML

Answer 3

A

Question 4

__________ is the frequency of a light wave within the narrow band of the electromagnetic spectrum to which the human eye responds.

Question 5

__________ is an area of memory where data such as text or images is temporarily stored when you (cut, copy, or paste) within an application.

Question 6

What is the process called by which the color value of each pixel is changed to the closest matching color value in the target palette?

A) dithering
B) extruding
C) screening
D) saturating

Question 7

The color depth of an 8-bit image is:

A) 6
B) 256
C) 32,768
D) 65,536

Question 8

Which of the following drawing tools use Bézier paths to mathematically represent a curve?

A) Raster
B) Vector
C) Bitmap
D) Pixel

Question 9

CMYK is a(n) __________ color method used by printers.

Question 10

__________ are mathematical tables that define the color of a pixel displayed on the screen.

Question 11

Which of the following allows you to convert bitmapped images into vector images?

A) Scaling
B) Rendering
C) Morphing
D) Autotracing

Question 12

Explain the major differences between bitmap and vector images.
Bitmap images are created from a matrix of pixels, dots containing color information, while vector images are created from mathematical representations of Bézier curves. Bitmaps are well suited for photographic or continuous tone images, while vector images are more appropriate for illustrations or graphics such as logos. Scaling bitmaps larger results in lower resolution, while vector images may be scaled without loss to resolution.

Question 13

Light comes from __________ when electrons pass from higher to a lower energy level, thereby producing uniquely specific colors.

A) photons
B) rods
C) cones
D) atoms

Question 14

__________ images are purchased and then used without paying additional license fees.

A) Public domain
B) Royalty-free
C) Rights-managed
D) Thumbnail

Question 15

Raster graphics used for saving photo-realistic images and detailed complex drawings are called __________.

Question 16

Monochromatic images have a bit depth of __________.

A) 1
B) 4
C) 8
D) 6

Question 17

Computer screens display color using:

A) RGB
B) CMYK
C) PSD
D) YUV