路由器下“特权用户模式”的标识符是：()

【名词&注释】

路由表(routing table)、路由器(router)、交换机(switch)、子网掩码(subnet mask)、数据包(packet)、第二层(the second layer)、标识符(identifier)

[单选题]路由器下“特权用户模式”的标识符^(identifier)是：()

A. >
B. !
C.
D. (config-if)

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学习资料：

[单选题]OSI第二层^{(the second layer)}数据封装完成后的名称是：()

A. 比特
B. 包
C. 帧
D. 段

[单选题]路由器上“水平分割”的功能是：()

A. 分离端口
B. 阻止路由环路
C. 简化配置
D. 方便故障处理

[单选题]在路由表中到达同一网络的路由有：静态路由、RIP路由、IGRP路由，OSPF路由，则路由器会选用哪条路由传输数据：()

A. 静态路由
B. RIP路由
C. IGRP路由
D. OSPF路由

[多选题]对于IP为199.41.27.0，子网掩码为255.255.255.240，则该IP地址和子网掩码相作用会得到一系列IP，从下列选项中选出属于“有效IP”的选项：()

A. 199.141.27.33
B. 199.141.27.112
C. 199.141.27.119
D. 199.141.27.126
E. 199.141.27.175
F. F.199.141.27.208

[多选题]交换机的三大功能为（）

A. 地址学习
B. 转发过滤
C. 消除回路
D. 发送数据包

[单选题]A Ezonexam switch is configured with all ports assigned to VLAN 2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?

A. The additions will create more collisions domains.
B. IP address utilization will be more efficient.
C. More bandwidth will be required than was needed previously.
D. An additional broadcast domain will be created.
E. The possibility that switching loops will occur will increase dramatically.

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