正确答案: B

show interface e0

题目：为了查看路由器的E0端口上，是否挂接了访问权限表，应该使用的命令是（）

解析：B

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学习资料的答案和解析：

[单选题]关于静态NAT，下面（）说法是正确的。

静态NAT将内部地址一对一静态映射到内部全局地址

[单选题]OSI第二层数据封装完成后的名称是：()

帧

[单选题]OSI七层模型中，“包”是哪一层数据封装的名称（）

网络层

[单选题]路由器上“水平分割”的功能是：()

阻止路由环路

[单选题]On the topic of VLSM, which one of the following statements best describes the concept of the route aggregation?

Combining routes to multiple networks into one supernet.

解析：解析：Explanation:

[多选题]The Ezonexam network administrator needs to determine what LAN devices to install on the Ezonexam network. What are two advantages of using Layer 2 Ethernet switches over hubs? (Choose two)

Allowing simultaneous frame. transmissions

Filtering frames based on MAC addresses

解析：解析：Explanation:A:Ahalfduplexconnectioniswhereonlyonedevicecansendorreceiveatatime.Afullduplexconnectioniswherebothdevicescansendandreceiveatthesametime.Thus,ifyouhavea100Mbhalf-duplexconnection,onlysendingat100MbORreceivingat100Mbcanhappenatthesametime.Ifyouhavea100Mbfullduplexconnection,youcaneffectivelyget200Mboutofthelinkbecauseyoucouldbesending100Mbandreceiving100Mbatthesametime.D:SwitchesarecapableoffilteringframesbasedonanyLayer2fields.Forexample,aswitchcanbeprogrammedtoreject(notforward)allframessourcedfromaparticularnetwork.Becauselinklayerinformationoftenincludesareferencetoanupper-layerprotocol,switchesusuallycanfilteronthisparameter.Furthermore,filterscanbehelpfulindealingwithunnecessarybroadcastandmulticastpackets.