Which part of the Layer 3 header is used to identify a flow in NetFlow but it is not used for NBAR?

Posted by: Pdfprep Category: 300-320 Tags: , ,

Which part of the Layer 3 header is used to identify a flow in NetFlow but it is not used for NBAR?
A . source port
B . ToS
C . protocol type
D . source IP

Answer: B

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