Two HP Provision switches are configured as virtual routers. How does the VRRP backup know if the VRRP master is available and functioning?
A. The VRRP master and backup exchange hello packets over a VLAN dedicated to VRRP.
B. The VRRP backup sends VRRP requests, and the master replies by sending a VRRP ACK message.
C. The VRRP master and backup both implement bi-directional forwarding detection (BFD).
D. The VRRP backup listens for the master’s VRRP advertisements.
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