Which of the following is NOT a protocol,port pair that should be filtered when an attempt is made to make a connection from outside the company network?
A) TCP,80
B) TCP,139
C) UDP,138
D) TCP,3389

Question

Quizplus · Accepted Answer

TCP port 80 is used for HTTP, which is necessary for accessing websites from outside the company network. Filtering this port would block web access. Ports 139 (TCP), 138 (UDP), and 3389 (TCP) are associated with NetBIOS, SMB, and Remote Desktop Protocol respectively, which are commonly filtered to prevent unauthorized network access or remote control.

Which of the Following Is NOT a Protocol,port Pair That