【单选题】
集线器和路由器分别运行于OSI参考模型的___。
A. 数据链路层和物理层
B. 网络层和传输层
C. 传输层和数据链路层
D. 物理层和网络层
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答案
D
解析
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在OSI参考模型中能实现路由选择、拥塞控制与互联功能的层是___。
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【单选题】
在下面对OSI参考模型的数据链路层的功能特性描述中,哪一项是不正确的?___
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C. 将数据分解成帧,按顺序传输帧,并处理接收端发回的确认帧
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【单选题】
在OSI参考模型中,网络层、数据链路层和物理层传输的数据单元分别是___。
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【单选题】
下面属于TCP/IP协议族中网络互联层协议的是___。
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【单选题】
协议是______之间进行通信的规则或约定。___
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Having practiced so many times, I feel very ___ of my ability to deliver the presentation successfully.
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___ they have written about the behaviors of animals is hardly anything new.
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