Which two of the following are benefits that come from using the 1:1 redundancy design? (Choose
two)

A.
In-service upgrades can be performed

B.
maximize scalability with up to 30.000 IP phones

C.
can withstand two call processing servers failing

D.
allows IP phones to fail over more quickly

E.
fewer servers than the 2 1 redundancy model

F.
the TFTP server can be located co-resident with the publisher