Computer Hacking Forensic Investigator (CHFI) 2025 – 400 Free Practice Questions to Pass the Exam

The term 'lossless' in the context of bitmap files refers to the preservation of data without introducing compression artifacts that would degrade the quality of the image. In a lossless format, every bit of data from the original file is retained, ensuring that when the file is decompressed, it is identical to the original. This is particularly important in forensic investigations where the integrity and accuracy of the data are paramount; even slight alterations could lead to misinterpretations or loss of critical evidence.

In contrast, the other options suggest scenarios where the quality or content of the image is compromised. For example, when data is lost during conversion, it signifies that the integrity of the file has been affected, which is the opposite of lossless. Similarly, reducing color depth indicates a decrease in the amount of color information stored in the file, which can also lead to quality loss. Lastly, while a significantly reduced file size can sometimes be a benefit of compression, it often comes at the cost of losing data and quality, thus not aligning with the concept of lossless compression.