You notice your indirect I/O performance between nodes in your 4-node cluster is slowing
down from prior week. Each node has two 10 GB connections to the cluster interconnect,
one to each switch. You are using four out of 12 available ports on each cluster

interconnect switch. Your cluster network utilization is over 80%.
What should you do to increase cluster interconnect performance?

A.
Change the SFP+ from 10 Gb to 16 Gb on each node and switch.

B.
Add two more cluster interconnect connections per node.

C.
Add additional ISLs between the two cluster interconnect switches.

D.
Change the cable from TwinAx to optical with SFP+ for better throughput.