Computer Hacking Forensic Investigator (CHFI) Practice Exam

BMP (Bitmap) images are capable of supporting various color depths, which determine the number of colors that can be displayed in an image. The most common and widely used color depths include 1-bit, 4-bit, 8-bit, 16-bit, 24-bit, and 32-bit.

The choice of 24-bit color is significant because it allows for up to 16.7 million colors (2^24), representing true color, which is the standard for high-quality images that require rich detail and vivid coloration. In a 24-bit BMP file, each of the three color channels (red, green, blue) is allocated 8 bits, allowing each channel to display 256 different intensity levels.

While BMP images can also support 32-bit color depth—where an additional 8 bits are used for an alpha channel (transparency)—the basic and fundamental color depth commonly associated with BMP files in terms of visual representation is 24-bit. This makes 24-bit color the maximum color depth directly related to displaying color without considering additional data like transparency.

Thus, 24-bit color is a critical standard for BMP images, marking the point where images can display realistic color representation, suitable for most applications that require high fidelity in