正确答案: BC

It encourages industry standardization by defining what functions occur at each layer of the model It divides the network communication process into smaller and simpler components; thus aiding component development, design and troubleshooting

题目：As the Ezonexam network administrator, you are required to have a firm understanding of the OSI model. Why does the data communication industry use the layered OSI reference model? (Choose two)

解析：解析：Explanation:

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举一反三的答案和解析：

[单选题]PPP工作在OSI的哪一层（）

数据链路层

[多选题]交换机的三大功能为（）

地址学习

转发过滤

消除回路

解析：ABC

[单选题]两台路由器直连到一起，应该使用的线缆为（）

交叉线缆

[单选题]Assuming you build networks to exact specifications, what is the recommended maximum length a 10BaseT cable can be before it has to be segmented or repeated?

100 meters

解析：解析：Explanation:

[多选题]You need to configure a default route on a Ezonexam router. Which command will configure a default route on a router?

VE1(config) ip route 0.0.0.0 10.1.1.0 10.1.1.1

VE1(config) ip default-route 10.1.1.0

VE1(config) ip default-gateway 10.1.1.0

VE1(config) ip route 0.0.0.0 0.0.0.0 10.1.1.1

解析：解析：Explanation:Thecommand"IProute0.0.0.00.0.0.0quot;$commandisusedtoconfigureadefaultrouteonarouter.Inthiscase,adefaultroutewithanexthopIPaddressof10.1.1.1wasconfigured.IncorrectAnswers:A.Thiswillbeaninvalidroute,sincethe"10.1.1.0"valuewillspecifythenetworkmask,whichinthiscaseisinvalid.B,C.Thesecommandsareinvalid.Thecommand"ipdefault-network"couldbeused,butnot"ipdefault-route"or"ipdefault-gateway".IPdefault-gatewayisusedonswitches,notrouters.

[单选题]路由器上的命令“show version”的功能是（）

显示版本信息

[单选题]FTP工作在OSI哪一层（）

应用层

[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