A.SW2

B.SW1

C.SW3

D.SW4

A.1-Gbps interfaces are full-duplex by default.

B.Autonegotiation is disabled.

C.The interface displays a connected (up/up) state even when the duplex settings are mismatched.

D.Full-duplex interfaces use CSMA/CD logic, so mismatches may be disguised by collisions.

E.The symptoms of a duplex mismatch may be intermittent.

A.the interface is error-diabled if packets arrive from a new unknown source address

B.it has dynamically learned two secure MAC addresses

C.it has dynamically learned three secure MAC addresses

D.learned MAC addresses are deleted after five minutes of inactivity

E.the security violation counter increments if packets arrive from a new unknown source address

A.Router4

B.Router3

C.Router2

D.Router5