
【名词&注释】
管理机制、物理层(physical layer)、帧中继(frame relay)、广域网协议、数据链路层(data link layer)
[单选题]RIP协议的管理距离是()
A. 100
B. 110
C. 120
D. 150
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举一反三:
[单选题]常见的LSA有几种类型()
A. 4
B. 5
C. 6
D. 7
[多选题]网络中经常使用“帧中继”服务,请选出帧中继的优点()
A. 偷占带宽
B. 提供拥塞管理机制
C. 可以使用任意广域网协议
D. 灵活的接入方式
[单选题]IP地址为:192.168.50.70,掩码为:255.255.255.248,则该IP和掩码结合划分子网时,每个子网的容量为()
A. 8
B. 4
C. 12
D. 6
[单选题]OSI七层模型中,“包”是哪一层数据封装的名称()
A. 物理层
B. 数据链路层(data link layer)
C. 网络层
D. 传输层
[单选题]The network administrator has configured port security on a Ezonexam switch. Why would a network administrator configure port security on this Ezonexam device?
A. To prevent unauthorized hosts from getting access to the LAN
B. To limit the number of Layer 2 broadcasts on a particular switch port
C. To prevent unauthorized Telnet or SSH access to a switch port
D. To prevent the IP and MAC address of the switch and associated ports
E. None of the above
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