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 

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