正确答案: ABD

10.0.0.0-10.255.255.255 172.16.0.0-172.31.255.255 192.168.0.0-192.168.255.255

题目：属于私有IP段的是()

解析：ABD

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举一反三的答案和解析：

[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:

[单选题]An administrator issues the show ip interface s0/0 command and the output displays that interface Serial0/0 is up, line protocol is up.What does "line protocol is up" specifically indicate about the interface?

Keepalives are being received on the interface.

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]混合型协议既具有“距离矢量路由协议”的特性，又具有“链路状态路由协议”的特性，下列协议中属于混合型协议的是：()

EIGRP

[单选题]工作在OSI第三层的设备是：()

路由器