根据下图，网络管理员如此配置的RA的原因是？（）

单项选择题 根据下图，网络管理员如此配置的RA的原因是？（）

A.让students访问Internet
B.阻止students访问RA的命令提示符
C.阻止管理员访问RA的控制台
D.让administrators访问Internet
E.阻止students访问Internet
F.阻止students访问Admin的网络

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1.单项选择题A network administrator is troubleshooing an EIGRP problem on a router and needs to confirm the IP addresses of the devices with which the router has established adjacency. The retransmit interval and the queue counts for the adjacent routers also need to be checkeD.What command will display the required information?（）

A.Router# show ip eigrp adjacency
B.Router# show ip eigrp topology
C.Router# show ip eigrp interfaces
D.Router# show ip eigrp neighbors

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2.单项选择题What is one reason that WPA encryption is preferred over WEP?（）

A.A WPA key is longer and requires more special characters than the WEP key.
B.The access point and the client are manually configured with different WPA key values.
C.WPA key values remain the same until the client configuration is changed.
D.The values of WPA keys can change dynamically while the system is used.

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3.单项选择题在使用VLSM技术的网络中使用一个C类的IP地址，以下哪个子网掩码在点对点串行链路中是最不浪费地址空间的？（）

A.255.255.255.0
B.255.255.255.240
C.255.255.255.248
D.255.255.255.252
E.255.255.255.254

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4.单项选择题Which additional configuration step is necessary in order to connect to an access point that has SSID broadcasting disabled?（）

A.Set the SSID value in the client software to public.
B.Configure open authentication on the AP and the client.
C.Set the SSID value on the client to the SSID configured on the AP.
D.Configured MAC address filtering to permit the client to connect to the AP.

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5.单项选择题 根据下图，Switch-1需要往一台MAC地址为00b0.d056.efa4的主机发数据，Switch-1会如何处理这些数据？（）

A.Switch-1会丢弃该数据，因为它没有该MAC地址条目
B.Switch-1会防洪该数据到所有的接口，除了该数据的源接口
C.Switch-1会发送ARP请求到所有的接口，除了该数据的源接口
D.Switch-1会往默认网关发送该数据

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6.单项选择题 根据下图，哪个交换机为打印机提供了生成树中的指定端口角色？（）

A.Switch1
B.Switch2
C.Switch3
D.Switch4

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7.多项选择题What functions do routers perform in a network (Choose two.)（）。

A.packet switching
B.access layer security
C.path selection
D.VLAN membership assignment
E.bridging between LAN segments
F.microsegmentation of broadcast domai

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8.单项选择题 如下图，两个路由器（Atlanta和Brevard）用串口连接起来。但是他们之间没有数据传输，已知Atlanta配置正确，下图给出部分配置，路由器Brevard上导致该问题的原因是（）。

A.没有设置loopback命令
B.IP地址不正确
C.子网掩码不正确
D.串行链路封装不正确
E.最大传输单元（MTU）设置得太大
F.带宽设置和直连的接口不匹配

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9.单项选择题You have finished physically installing an access point on the ceiling at your officE.At a minimum, which paramenter must be configured on the access point in order to allow a wireless client to operate on it?（）

A.AES
B.PSK
C.SSID
D.TKIP
E.WEP

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10.单项选择题At which OSI layer is a logical path created between two host systems（）。

A.session
B.transport
C.network
D.data link
E.physical

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