Câu 15: 642-885: Deploying Cisco Service Provider Advanced Routing (SPADVROUTE)
Which two statements correctly describe the RPF check when a multicast packet arrives at a router? (Choose two.)
Nội dung câu hỏi
Which two statements correctly describe the RPF check when a multicast packet arrives at a router? (Choose two.)
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. The router looks up the source address in the unicast routing table to determine if the packet has arrived on the interface that is on the reverse path back to the source — đáp án hiện tại
- B. The router looks up the destination address in the unicast routing table to determine if the packet has arrived on the interface that is on the reverse path back to the destination
- C. If the packet has arrived on the interface leading back to the destination, the RPF check passes and the packet is forwarded. If the RPF check fails, the packet is dropped
- D. If the packet has arrived on the interface leading back to the source, the RPF check passes and the packet is forwarded. If the RPF check fails, the packet is — đáp án hiện tại
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