Computer Hacking Forensic Investigator (CHFI) Practice Exam 2025 - Free CHFI Practice Questions and Comprehensive Study Guide

A bit-stream copy is indeed defined as a bit-by-bit copy of the original storage medium, resulting in an exact replica of the original disk. This process captures all data, including files, system files, unallocated space, and even deleted files that may still be recoverable. It is crucial in forensic investigations as it preserves the integrity of the original data and allows investigators to examine the information without altering it.

The other options do not accurately convey the significance of a bit-stream copy in a forensic context. Options mentioning specific file system types like NTFS or FAT32 describe types of file systems rather than the methodology of data copying itself. Furthermore, the reference to transferring "only non-deleted files" contradicts the comprehensive nature of a bit-stream copy since it includes all data, regardless of its state (deleted or not). Therefore, understanding the thorough nature of preserving data in its entirety is essential for effective forensic analysis.