单项选择题
What is a valdi multicast MAC address?（）
A. 00:90:69:9F:EA:46 B. FF:FF:FF:FF:FF:FF C. 01:00:5E:28:12:95 D. 99:99:99:99:99:99
多项选择题 Which three functions are available under the "Maintain" tab of J-Web?（）
单项选择题 Which command do you issue to upgrade the current software on Junos devices?（）
单项选择题 Which command do you use to identify the meaning of a syslog message?（）
