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Carla is the firewall administrator for a large university. She has recently seen a flurry of activity from student networks sending spam print jobs to printers located in administrative offices. She would like to block printer traffic between network segments using the standard HP JetDirect port. What port should she block?
A. TCP port 9100
B. UDP port 9100
C. TCP port 8080
D. UDP port 8080
Correct Answer: A
HP JetDirect printer traffic uses TCP port 9100 to transfer data from clients to printers.