單項(xiàng)選擇題

Which statement is correct regarding NBAR and NetFlow?()

A.NetFlow uses five key fields for the flow
B.NBAR examines data in Layers 3 and 4
C.NetFlow examines data in Layers 3 and 4
D.NBAR examines data in Layers 2 through 4
E.NetFlow examines data in Layers 2 through 4

微信掃碼免費(fèi)搜題