When a new trunk is configured on a 29...

单项选择题When a new trunk is configured on a 2950 switch, which VLANs by default are allowed over the trunk link（）。

A.no VLANs
B.all VLANs
C.only VLANs 1 - 64
D.only the VLANs that are specified when creating the trunk

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1.单项选择题命令standbystate-upinterval-time运用于（）。

A.主接口是物理接口
B.备份接口是物理接口
C.主接口是逻辑通道
D.备份接口是逻辑通道

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2.多项选择题以下哪些路由项由网管手动配置（）？

A.静态路由
B.直连路由
C.缺省路由
D.动态路由

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3.多项选择题Which of the following are benefits of VLANs? （）

A.They increase the size of collision domains.
B.They allow logical grouping of users by function.
C.They can enhance network security.
D.They increase the size of broadcast domains while decreasing the number of collision domains.
E.They increase the number of broadcast domains while decreasing the size of the broadcast domains.
F.They simplify switch administration.

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4.多项选择题下列哪些技术有助于减少路由环路？（）

A.直接交换
B.采用链路状态路由协议
C.水平分割
D.保持间隔
E.定义最大跳数
F.路由中毒

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5.单项选择题10.1.0.1/17的广播地址是（）。

A.10.1.128.255
B.10.1.63.255
C.10.1.127.255
D.10.1.126.255

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6.多项选择题Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts? （）

A.15.234.118.63
B.92.11.178.93
C.134.178.18.56
D.192.168.16.87
E.201.45.116.159
F.217.63.12.192

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7.单项选择题如果C类子网的掩码为255.255.255.240，则包含的子网位数、子网数目、每个子网中的主机数目正确的是（）。

A.2.2.2
B.3.6.30
C.4.14.14
D.5.30.6

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8.多项选择题Which of the following describe the process identifier that is used to run OSPF on a router (Choose two.)（）。

A.It is locally significant
B.It is globally significant
C.It is needed to identify a unique instance of an OSPF database
D.It is an optional parameter required only if multiple OSPF processes are running on the router
E.All routers in the same OSPF area must have the same process ID if they are to exchange routing information

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9.多项选择题Which of the following host addresses are members of networks that can be routed across the public Internet? （）

A.10.172.13.65
B.172.16.223.125
C.172.64.12.29
D.192.168.23.252
E.198.234.12.95
F.212.193.48.254

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10.单项选择题给您分配一个B类IP网络172.16.0.0，子网掩码255.255.255.192，则您可以利用的网络数为（），每个网段最大主机数（）。

A.512；126
B.102；262
C.102；462
D.256；254
E.192；254

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