A network administrator received an administrative alert at 3:00 a.m. from the intrusion detection
system. The alert was generated because a large number of packets were coming into the
network over ports 20 and 21. During analysis, there were no signs of attack on the FTP servers.
How should the administrator classify this situation?

A.
True negatives

B.
False negatives

C.
True positives

D.
False positives