A university's help desk is receiving reports that Internet access on campus is not functioning.
The network administrator looks at the management tools and sees the 1Gbps Internet is completely saturated with ingress traffic.
The administrator sees the following output on the Internet router:
The administrator calls the university's ISP for assistance, but it takes more than four hours to speak to a network engineer who can resolve the problem.
Based on the information above, which of the following should the ISP engineer do to resolve the issue?
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A. B. C. D.D.