CFA-001 practice question 10 of 25

Raw data acquisition format creates ____________of a data set or suspect drive.

Full set: 180 questions

Domain Data Acquisition and Duplication

Answer options
A: Simple sequential flat files Correct answer
B: Segmented files
C: Compressed image files
D: Segmented image files
Correct Answer:
A. Simple sequential flat files
Explanation

A raw data acquisition format creates a bit-for-bit copy of the source media (e.g., a suspect drive) and saves it as a single file. This file is a direct, sequential representation of the original data, containing no additional metadata, compression, or internal structure. This type of image is often referred to as a "dd image" or a "flat file" because it is a simple, unstructured stream of bytes identical to the source from beginning to end.

Why Incorrect

B. Segmented files: Segmentation is a feature of advanced formats (like E01) to break a large image into smaller chunks, not an inherent characteristic of the raw format.
C. Compressed image files: The raw format is, by definition, an uncompressed bit-stream copy. Compression is a feature found in proprietary or advanced forensic formats.
D. Segmented image files: The raw format creates a single, contiguous file. Segmentation is a process applied by other formats to manage file size, not a native feature of raw acquisition.

References

1. Carrier, B. (2005). File System Forensic Analysis. Addison-Wesley Professional. In Chapter 4, "Data Acquisition," the raw image format is described as a "sequential, bit-by-bit copy of the source data" (p. 68). This aligns with the concept of a simple sequential flat file.

2. Kent, K., Chevalier, S., Grance, T., & Dang, H. (2006). Guide to Integrating Forensic Techniques into Incident Response (NIST Special Publication 800-86). National Institute of Standards and Technology. Section 3.3.2, "Imaging," discusses creating "a bit-by-bit copy of a disk," which is the fundamental process of raw imaging that results in a single, sequential file.

3. Casey, E. (2011). Digital Evidence and Computer Crime: Forensic Science, Computers, and the Internet (3rd ed.). Academic Press. Chapter 9, "Data Acquisition," describes the raw format as the "simplest format... a bit-for-bit copy of the data to a file" (p. 273), reinforcing its nature as a simple, flat file.

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