A.S3

B.S2

C.S1

D.S4

A.It uses a route that is similar to the destination address

B.It Queues the packets waiting for the route to be learned.

C.It discards the packets.

D.It floods packets to all learned next hops.

A.Root port choice and spanning tree recalculation are accelerated when a switch link goes down.

B.After spanning tree converges, PortFast shuts down any port that receives BPDUs.

C.VTP is allowed to propagate VLAN configuration information from switch to switch automatically.

D.Spanning tree may fail to detect a switching loop in the network that causes broadcast storms.

A.different nonoverlapping channels

B.one overlapping channel

C.different overlapping channels

D.one nonoverlapping channel