单选题What is the purpose of unicast reverse path forwarding?（）Ato validate packet receipt on interfaces where the traffic should be receivedBto forward packets out the interfaces where the traffic should be receivedCto forward packets out the interfaces where the traffic should be sentDto validate packet receipt on interfaces where the traffic should be sent
单选题
What is the purpose of unicast reverse path forwarding?（）
A
to validate packet receipt on interfaces where the traffic should be received
B
to forward packets out the interfaces where the traffic should be received
C
to forward packets out the interfaces where the traffic should be sent
D
to validate packet receipt on interfaces where the traffic should be sent
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