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下列说法错误的是()
分类:
计算机网络原理(04741)
发表:2024年09月12日 02时09分13秒
作者:
admin
阅读:
(12)
下列说法错误的是()
A、X.25网中每两个节点的数据传送都要经过校验和确认
B、X.25提供点对点的数据发送而不是一点对多点的发送
C、X.25从ISO/OSI的分层体系结构观点看,X.25是OSI最下面三层(物理层、传输层、网络层)同等层协议的组合
D、X.25是一个确认型网络,且网络开销较大
【正确答案】:C
【题目解析】:X.25从ISO/OSI的分层体系结构观点看,X.25是OSI物理层、数据链路层、网络层这三层的同等层协议的组合。
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