Why is full-duplex Ethernet superior to its single-duplex counterpart?()
A. It uses inexpensive hubs
B. It operates without collisions
C. It operates on switches
D. It provides faster data transfer
E. It utilizes fewer wiring pair
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当路由器收到组播数据后,査找组播转发表()。
A. 如果组播转发表中不存在对应的(S,G)表项,路由器丢弃组播数据
B. 如果组播转发表中存在对应的(S,G)表项,且该报文实际到达的接口与表项中入接口相匹配,路由器转发组播数据
C. 如果组播转发表中存在对应的(S,G)表项,但该报文实际到达的接口与表项中入接口不匹配,路由器丢弃组播数据
D. 如果组播数据RPF接口与(S,G)表项中的入接口不符,路由器会将表项的入接口更新为检査得到的RPF