Computer Hacking Forensic Investigator (CHFI) Practice Exam

The statement that pixel data in BMP files is typically stored as an array of color values is accurate because BMP files are structured to hold pixel data in a straightforward manner. Each pixel's color is represented by a series of bits which correspond to its color channels (such as red, green, and blue in the RGB color model). This array allows for efficient access and manipulation of pixel data for rendering images.

In BMP files, the color values can represent various formats — including 24-bit RGB, which uses 8 bits for each of the three color channels, resulting in a wide range of possible colors. The design of BMP files emphasizes simplicity and ease of use, which is why the pixel data is laid out in an array format, making it easy to read the pixel information directly.

The other options present various misconceptions about BMP file structure: BMP files do not always employ compression (as suggested in the first choice), which contradicts the format's typical use—usually for uncompressed data. The statement about pixels being stored as grayscale only is too restrictive, as BMP files can support full-color images. Lastly, while BMP files have defined channels for color representation, there are limitations based on the bit depth, so it's incorrect to assert that there are no limitations