CCNP系列認(rèn)證CCNP(642-832)問答題每日一練(2019.01.19)

Refer to the output shown on switch SW1 below： 
Warning： Spantree port fast start should only be enabled on ports connected to a single host.Connecting hubs， concentrators， switches， bridges， etc. to a fast start port can cause temporaryspanning tree loops. Use with caution.
Spantree ports 4/1-24 fast start enabled. 
What command could you enter to reproduce this output？

Match the xDSL type on the above to the most appropriate implementation on the below.

Drag the IOS commands from the left that would be used to implement a GRE tunnel using the10.1.1.0.30 network on interface serial 0/0 to the correct target area on the right.

The interface is up and protocol is up. When do u get these messages.