多项选择题
A. Switch(config-if)# vlan all
B. Switch(config-if)# switchport trunk encapsulation dot1q
C. Switch(config-if)# switchport access vlan all
D. Switch(config-if)# switchport mode trunk
E. Switch(config-if)# switchport access vlan 303
多项选择题 You are the network administrator at TestKing. You need to perform password recovery on Router TK1. What must you modify in the password recovery process?（）
单项选择题 After making some network changes you power off and then power on your Cisco router. What sequence of events occurs when a router is powered up?（）
单项选择题 You are unable to connect to the TESTKING1 router. Which of the following command sequences will correct this problem?（）