单项选择题The ability to stack switches using cisco stackwise technology provides A number of important benefits to the customer, which of these is A benefit of cisco stackwise?()
A.allows multiple switches to be managed as A single device.
B.eliminates the need to purchasesmartnet on individual switches in the stack
C.allowscisco smart switches to be incorporated into the stack
D.enables switches in multiplewring closets to provide failover for each other