Implementing Cisco IP Switched Networks (SWITCH v2-0) (#460)

Which benefit of Stackwise is true?

It allows multiple switches to operate independently while sharing a single management address.
It enables a Layer 2 switch to be converted to a Layer 3 switch when additional switches are added to the stack.
It allows multiple switches to be managed by a single management address.
It supports single-chassis EtherChannel mode option.