Ccna certification Practice Tests

A.  Turn off auto-negotiation on the interface.

B.  Configure PortFast mode for spanning tree.

C.  Configure BPDU Guard mode for spanning tree.

D.  Turn off port security.

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Chapter 8 

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  Practice Exam 2

 33.  You enter the 

show spanning-tree vlan 100 command on a switch. The output shows 

that all ports on the switch are in designated mode. What can be determined from this?

A.  This switch is connected to a root bridge.

B.  This switch is the root bridge.

C.  This switch is not participating in STP.

D.  This switch is a backup root bridge.

 34.  You have BPDU Guard configured on an interface. You receive a call that the interface  

is down. You perform a 

show interface gi 0/1 only to find that the port is in an  

err-disabled state. What caused the err-disabled state?