A network administrator is planning a flow table entry that provides fast failover for the traffic flow in case a link fails. Which key element would the flow entry contain?
A. a group identifier that specifies at least two output ports
B. a backup set action that modifies the packet and sends it to the controller
C. a forward action to the reserved port NEAREST_ACTIVE
D. a go-to-table action that sends trafficto another table if the port is down
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