What may an increase in IPv4 traffic carrying protocol 41 indicate?

Posted by: Pdfprep Category: 210-250 Tags: , ,

What may an increase in IPv4 traffic carrying protocol 41 indicate?
A . additional PPTP traffic due to Windows clients
B . deployment of a GRE network on top of an existing Layer 3 network
C . attempts to tunnel IPv6 traffic through an IPv4 network
D . unauthorized peer-to-peer traffic

Answer: C

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