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多項(xiàng)選擇題

What are two reasons that a network administrator would use access lists? (Choose two.) ()。

A.to control vty access into a router  
B.to control broadcast traffic through a router  
C.to filter traffic as it passes through a router  
D.to filter traffic that originates from the router  
E.to replace passwords as a line of defense against security incursions 

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