When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent acros

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问题 When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be  encapsulated as it is sent across the internetwork?

选项 A、0
B、1
C、2
D、3
E、4

答案D

解析
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