Which of the following is true of spanning tree protocol( STP) Protocol?

A.
STP provides path redundancy and prevents undesirable loops between switches

B.
Check Point supports the per-VLAN STP

C.
A Security Gateway in Bridge mode will not support the spanning tree protocol

D.
SNMP has to run when running STP to control the network

E.
STP monitors for device failure and controls which switches the traffic passes through