The question was something like what does the configuration do?

EXHIBIT INCLUDED.

About Spanning-Tree.

spanning-tree extend system-id

spanning-tree mode PVST+

spanning-tree backbonefast

The question was something like what does the configuration do?
A . It used extended VLAN
B . It used to protect Root switch
C . It enables the switch to set dynamic extended System IDs.

View Answer

Answer: C