In(66)the strength of the carrier signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address 

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问题 In(66)the strength of the carrier signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address and conversely an address to al name.(68)is a three-way handshaking authentication protocol that it’s packets are encapsulated in the point-to-point protocol.(69)is an approach that enables an ATM switch to behave like a LAN switch.(70)is an guided media which is made of glass or plastic and transmits signals in the form of light.

选项 A、VLAN
B、LANE
C、VPN
D、IPOA

答案B

解析 VLAN为虚拟局域网。LANE是指在ATM上的局域网仿真。VPN为虚拟个人网络。IPOA是IP Over ATM的缩写,是在ATM-LAN上传送IP数据包的一种技术。答案为B。
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