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Which of the following could the technician do for vend…

A network technician has set up an FTP server for the company to distribute software updates for their products. Each vendor is provided with a unique username
and password for security. Several vendors have discovered a virus in one of the security updates. The company tested all files before uploading them but retested
the file and found the virus. Which of the following could the technician do for vendors to validate the proper security patch?

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A.
Use TFTP for tested and secure downloads

B.
Require biometric authentication for patch updates

C.
Provide an MD5 hash for each file

D.
Implement a RADIUS authentication

Explanation:
If we put an MD5 has for each file we can see if the file has been changed or not.

MD5 is an algorithm that is used to verify data integrity through the creation of a 128-bit message digest from data input (which may be a message of any length)
that is claimed to be as unique to that specific data as a fingerprint is to the specific individual.

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