
【名词&注释】
路由表(routing table)、路由器(router)、数据包(packet)
[单选题]标准访问控制列表的数字标识范围是()。
A. 1-50
B. 1-99
C. 1-100
D. 1-199
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举一反三:
[单选题]Which one of the following characteristics is true regarding the use of hubs and switches?
A. Hubs can have their ports be configured with VLANs
B. Using hubs is costly with regard to bandwidth availability.
C. Switches can not forward broadcasts.
D. Switches are more efficient than hubs in processing frames.
E. Switches increase the number of collision domains in the network.
[单选题]路由器上的命令“show version”的功能是()
A. 显示版本信息
B. 显示端口配置信息
C. 显示路由表
D. 显示路由协议信息
[单选题]网关的功能()
A. 过滤数据包
B. 不同网段通信
C. 校验数据帧
D. 把数据封装成“段”
[单选题]OSPF骨干区的区域编号为()
A. 0.0.0.1
B. 255
C. 0.0.0.0
D. 255.255.255.255
[单选题]下列命令中,无法正确执行的是()
A. Router(config)show run
B. Routerping 127.0.0.1
C. Router(config)hostname cisco
D. Routerreload
[单选题]Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?
A. 255.255.0.0.
B. 255.255.128.0.
C. 255.255.224.0.
D. 255.255.254.0.
E. None of the above
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