You need to install a patch for a human resources application. When you access the vendor's website, it shows that the patch is located on four different servers. A hash value is given. What should you do to ensure that you obtain the appropriate, unchanged patch?
A. Download and install any version of the patch. The patch is valid and unchanged if it is located on the vendor's servers.
B. Download all the versions of the patch, use MD5 to calculate the hash value of each version you downloaded, compare the hash value obtained to the hash value given by the vendor. Install the patch that has a hash value that matches the hash value given by the vendor.
C. Download the first version of the patch, use MD5 to calculate the hash value of the version you downloaded, compare the hash value obtained to the hash value given by the vendor. If the hash value is the same, install that patch. If the hash value is different, try the next version of the patch and follow the same procedure.
D. Contact the vendor to find out which patch is valid.
C
Explanation: You should download the first version of the patch, use MD5 to calculate the hash value of the version you downloaded, compare the hash value obtained to the hash value given by the vendor. If the hash value is the same, install that patch. If the hash value is different, try the next version of the patch and follow the same procedure.
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