多項選擇題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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1.單項選擇題A default Frame Relay WAN is classified as what type of physical network?()

A.point-to-point  
B.broadcast multi-access  
C.nonbroadcast multi-access  
D.nonbroadcast multipoint 
E.broadcast point-to-multipoint 

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