Why do you use a disk-image backup to perform forensic investigations?
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A. B. C. D.B.
Disk-image backup is a crucial component of forensic investigation as it helps investigators to create a bit-level copy of the entire disk that can be used for analysis without affecting the original data.
Option B is the correct answer because disk-image backup creates a bit-level copy of the entire disk, including both used and unused areas, and any hidden files or directories that may be inaccessible otherwise. A bit-level copy is an exact replica of the original disk, which makes it a valuable resource for forensic investigators.
This type of backup allows investigators to analyze the data on the disk without altering the original data. As a result, it helps ensure the integrity of the evidence and prevents any changes to the data that could affect the outcome of the investigation. Furthermore, this approach ensures that the investigation adheres to legal requirements and regulations.
Option A is not correct because timestamps can be altered or manipulated, which may compromise the integrity of the evidence. Moreover, timestamps may not be sufficient to provide the complete context of the evidence.
Option C is also not correct because the data store areas may not be relevant to the investigation. Furthermore, including the data store areas may result in a large amount of data, which may make analysis more challenging and time-consuming.
Option D is not correct because disk-image backup is not necessarily more secure than other backup methods. Security measures such as encryption and access controls should be implemented to ensure that the backup is secure.
In summary, disk-image backup is essential for forensic investigations because it creates an exact replica of the original disk, allowing investigators to analyze the data without altering the original data.