[单选题]当配置一个CISCO的路由器时,缺省的DR和BDR优先级是()。
正确答案 :B
1
[单选题]路由器上“水平分割”的功能是:()
正确答案 :B
阻止路由环路
[单选题]OSI七层模型中,数据链路层的数据封装名称为()
正确答案 :B
帧
[单选题]What kind of cable should be used to establish a trunked line between two Catalyst switches?
正确答案 :E
A cross-over cable
解析:解析:Explanation: A crossover cable is used to connect two of the same device types, or devices from the same OSI layer.
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