The network administrator has been tracking the cause of network performance problems and
decides to take a look at the internal and external router stats.

Which of the following should the network administrator do to resolve the performance issue after
analyzing the above information?

A.
The IP TOS field of business related network traffic should be modified accordingly.

B.
The TCP flags of business related traffic should be modified accordingly.

C.
An ACL should be placed on the external router to drop incoming ICMP packets.

D.
An ACL should be placed on the internal router to drop layer 4 packets to and from port 0.