1. [单选题]路由器下“特权用户模式”的标识符是：()
A. >
B. !
C.
D. (config-if)
2. [单选题]在启用IGRP协议时，所需要的参数是：()
A. 网络掩码
B. 子网号
C. 自治系统号
D. 跳数
3. [单选题]The Ezonexam network administrator needs to a switch named VE1 to become the root bridge for a redundant path switched network. What can be done to ensure that VE1 will always assume the role as the root bridge?
A. Assign the switch a higher MAC address than the other switches in the network have
B. Establish a direct link from the switch to all other switches in the network
C. Configure the switch full-duplex operation and configure the other switches for half-duplex operation
D. Configure the switch so that it has lower priority than other switches in the network
E. None of the above
