【导读】
布丁学网发布2022计算机类考试思科认证模拟考试练习题251,更多思科认证的模拟考试请访问布丁学网计算机类考试频道。
1. [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
2. [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)
3. [单选题]FTP工作在OSI哪一层()
A. 会话层(session layer)
B. 表示层
C. 传输层
D. 应用层
4. [单选题]某网络中,拟设计10子网,每个子网中放有14台设备,用IP地址段为199.41.10.X,请问符合此种规划的子网掩码是()
A. 255.255.255.0
B. 255.255.240.0
C. 255.255.255.240
D. 255.248.0.0
5. [单选题]路由器“全局模式”的提示符为()
A. >
C. (config)
D. (config-router)
6. [多选题]网络中经常使用DDN服务,请选出DDN的优点()
A. 传输质量高
B. 接入方式灵活
C. 偷占带宽
D. 使用虚电路
E. 专用线路
7. [多选题]Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true? (Select two answer choices)
A. The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.
B. The DHCP Discover message uses UDP as the transport layer protocol.
C. The DHCP Discover message uses a special Layer 2 multicast address as the destination address.
D. The DHCP Discover message uses TCP as the transport layer protocol.
E. The DHCP Discover message does not use a Layer 2 destination address.
F. F. The DHCP Discover message does not require a transport layer protocol.