Identify the data acquisition format that involves creating a bit-by-bit copy of the suspected drive using the dd command.

The correct answer is the raw format. This format refers to a bit-by-bit copy of a drive that captures all the data, including unallocated space and slack space. The dd command, commonly used in Unix/Linux environments, enables the creation of this exact replica of a drive, effectively reproducing every byte of data present on the source device.

This method is crucial in digital forensics because it ensures that the entire state of the drive is preserved for analysis, helping forensic investigators examine the system without altering the original data. By using raw format imaging, investigators can retain the integrity of the evidence, which is essential for any legal proceedings.

The other options refer to various methods or formats used in digital forensics but do not specifically pertain to the use of the dd command for bit-by-bit copying. For example, bit-stream imaging describes the process overall but doesn’t point to a specific file format. Advanced Forensic Framework 4 refers to a specific forensic tool or suite, and Bit-stream Disk-to-Image File is a more generic term not tied directly to the dd command.