[单选题]帧中继环境下,为了区分虚电路,应该使用的地址是()
正确答案 :C
DLCI
[单选题]下面有关交换机的描述中,正确的是()
正确答案 :C
交换机独占带宽
[单选题]查看E0端口配置信息的命令是:()
正确答案 :D
show interfacee0
[单选题]OSI七层模型中,传输层的数据封装名称为()
正确答案 :D
段
[单选题]What is the purpose of the spanning-tree algorithm in a switched LAN?
正确答案 :C
To prevent switching loops in networks with redundant switched paths.
解析:解析:Explanation:STPisusedinLANswithredundantpathsorroutestopreventloopsinalayer2switchedorbridgedLAN.IncorrectAnswers:A,B:TheprimarypurposeofSTPistopreventloops,notformonitoringormanagementofswitchesorVLANs.D.VLANsareusedtosegmentaLANintomultiplecollisiondomains,buttheSTPprocessalonedoesnotdothis.E.Routersareusedtopreventroutingloopsatlayer3oftheOSImodel.STPoperatesatlayer2.
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