1. [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
2. [单选题]How can a Ezonexam administrator determine if a router has been configured when it is first powered up?
A. A configured router prompts for a password
B. A configured router goes to the privileged mode prompt
C. An un configured router goes into the setup dialog
D. An un configured router goes to the enable mode prompt
3. [单选题]路由器“特权模式”的提示符是：（）
A. >
B.
C. (config)
D. (config-if)
