
【名词&注释】
路由表(routing table)、路由器(router)、交换机(switch)、不一致(inconsistency)、一对一(one to one)
[单选题]路由器下,由一般用户模式进入特权用户模式的命令是:()
A. enable
B. config
C. interface
D. router
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举一反三:
[单选题]When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?
A. when all switches have the same BID as the root switch
B. when all switches have received the MAC address of each neighboring switch
C. when every enabled switch port has been assigned a unique identifier
D. when every operating switch port is in either the blocking or forwarding state
E. when all switches are in either client, server, or transparent mode
[单选题]路由器上,命令“show int s0”的显示结果为:Serial0 is up,line protocol is down出现该结果的可能原因是()
A. 端口处于关闭状态
B. 物理端口被烧毁
C. 两端设备协议不一致
D. 路由表中无路由
[单选题]关于静态NAT,下面()说法是正确的。
A. 静态NAT转换在缺省情况下24小时后超时
B. 静态NAT转换从地址池中分配
C. 静态NAT将内部地址一对一(one to one)静态映射到内部全局地址
D. CISCO路由器缺省使用了静态NAT
[单选题]对交换机的描述,正确的是()
A. 单广播域,单冲突域的设备
B. 单广播域,多冲突域的设备
C. 多广播域,单冲突域的设备
D. 多广播域,多冲突域的设备
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