单选题Which of the following is the BEST reason to implement a firewall on a server？（）ATo watch for bandwidth issuesBTo protect the server from all trafficCTo block certain traffic by portsDTo monitor certain malicious traffic
单选题
Which of the following is the BEST reason to implement a firewall on a server？（）
A
To watch for bandwidth issues
B
To protect the server from all traffic
C
To block certain traffic by ports
D
To monitor certain malicious traffic
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