Option B (dd command with sha5l2sum) is incorrect because sha5l2sum is not a valid command. It seems to be a typographical error, and the command should have been sha512sum.
"dcfldd is an enhanced version of GNU dd with features useful for forensics and security. dcfldd has the following additional features
Hashing on the fly- dcfldd can hash the input data as it is being transferred helping to ensure data integrity.
https://www.forensics-matters.com/2020/10/20/simple-forensics-imaging-with-dd-dc3dd-dcfldd/#:~:text=dcfldd%20is%20an%20enhanced%20version,helping%20to%20ensure%20data%20integrity.
You may be wondering why MD5 is used for forensic imaging when most security practitioners recommend against using it. MD5 remains in use because it is fast and widely available, and the attacks against MD5 are primarily threats for reasons that don't apply to forensic images. As a practitioner, you are unlikely to encounter someone who can or would intentionally make two drives with different contents hash to the same value......from CompTIA notebook
however, the answers given, id say B is correct based on the syntax.
in A, the file or block copied is "one" .. /dev/one
idk what that is
in B, its /dev/sda which is the block itself "sda"
This command uses dcfldd to copy the contents of the hard drive (if=/dev/one) to a file (of=/mnt/usb/evidence.bin). It also generates MD5 and SHA-1 hash values for the copied data, and the hash values are logged to /mnt/usb/evidence.bin.hashlog.
Question is
"Which of the following would allow the analyst to perform the task?"
NOT
"Which of the following would allow BEST AND MORE DETAILED FOR the analyst to perform the task?"
I would not risk it for A because also /dev/one is not default hard drive name. Also dcfldd is more advanced and not everyone can read it
A. dcfldd if=/dev/one of=/mnt/usb/evidence.bin hash=md5, sha1 hashlog=/mnt/usb/evidence.bin.hashlog.
Option A would allow the security analyst to perform the task of providing a copy of a hard drive for forensic analysis. The command dcfldd is a forensic version of the dd command and is commonly used for creating forensic disk images.
The command dcfldd if=/dev/one specifies the input file as /dev/one, representing the hard drive. The of=/mnt/usb/evidence.bin specifies the output file as /mnt/usb/evidence.bin, which is where the copy of the hard drive will be saved.
Option B (dd command with sha5l2sum) is incorrect because sha5l2sum is not a valid command. It seems to be a typographical error, and the command should have been sha512sum.
option B its the right one, option A has a wrong syntax its coping from dev/one and it doesn't exist such a thing dev/sda is where the partitions are located
The dcfldd command is a forensic version of the dd command that is used for low-level copying of data. The "if" parameter specifies the input file (in this case, the hard drive to be imaged), and the "of" parameter specifies the output file (in this case, the destination of the forensic image). The "hash" parameter allows the analyst to generate a hash of the forensic image to verify its integrity, and the "hashlog" parameter specifies the location of the hash log file.
Option B, dd if=/dev/sda of=/mnt/usb/evidence.bin bs=4096; sha5l2sum /mnt/usb/evidence.bin > /mnt/usb/evidence.bin.hash, is missing a digit in the command (it should be sha512sum instead of sha5l2sum) and it does not use a forensic version of the dd command like dcfldd.
Option B is not suitable to provide a copy of a hard drive for forensic analysis as it does not include unused and slack space.
Unused and slack space are the areas on a hard drive that do not contain data and can contain hidden data that may be important for forensic analysis. By not including these areas in the copy, valuable data may be missed, and the integrity of the evidence can be compromised.
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