Computer Hacking Forensic Investigator (CHFI) Practice Exam

The number of colors available for each pixel in an image is determined by the bit depth. Bit depth refers to the amount of information stored in each pixel and is expressed in bits. For example, an 8-bit image can represent 256 different colors (2^8), while a 24-bit image can display over 16 million colors (2^24).

Understanding bit depth is essential for digital imaging, as higher bit depths allow for greater color precision and more possible variations in shades, making images appear more vibrant and detailed. This property directly affects the image quality and how colors are represented across different devices.

In contrast, pixel refers to the smallest unit of a digital image, file formats determine how image data is stored, and image file size is influenced by various factors, including resolution and compression but does not directly indicate the color depth. Therefore, bit depth is the key property that reveals the color capabilities of each pixel in an image.

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