To evaluate the security compliance of a group of servers against best practices, which of the following BEST applies?

A.
Get a patch management report.
B.
Conduct a penetration test.
C.
Run a vulnerability assessment tool.
D.
Install a protocol analyzer.
Can someone explain the difference of a protocol analyzer and vulnerability assessment tool to me? Thanks in advance.
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Protocol analyzer is used to examine network traffic to and from the system in question. This would show you TCP and UDP traffic for example. A vulnerability assessment tool runs known exploits against the system at the network as well as the service and application level.
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a protocol is a standard set of rules for communicating.
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