What is the fundamental difference between raster (bitmap) graphics and vector graphics in digital imaging?
Option C is correct. Raster graphics consist of a grid of individual pixels (resolution-dependent), causing pixelation when enlarged. Vector graphics use mathematical paths (points, lines, curves) which scale smoothly to any size.
How many total distinct colors can be represented in a standard 24-bit True Color digital image?
Option E is correct. In 24-bit True Color, 8 bits are allocated to each of the three primary RGB color channels (Red, Green, Blue). This yields $2^8 * 2^8 * 2^8$ = 256 * 256 * 256 = 16,777,216 distinct colors.
Which color model is primarily used for physical print publishing (such as commercial printing presses)?
Option B is correct. CMYK is a subtractive color model used in printing where light is absorbed by inks. RGB is an additive color model used for digital self-luminous displays.
In digital image compression, which algorithm is utilized as the lossless compression method in standard PNG image files?
Option B is correct. PNG uses the DEFLATE compression algorithm, combining LZ77 dictionary matching with Huffman coding to achieve lossless image compression without patent restrictions.
What is the function of the Alpha channel in a 32-bit RGBA digital image?
Option C is correct. In an RGBA image, 24 bits store Red, Green, and Blue color data, while the extra 8-bit Alpha channel specifies transparency/opacity (0 = fully transparent, 255 = fully opaque).