单项选择题
Which command do you use to identify the meaning of a syslog message?（）
A. help log messages B. man log messages C. man syslog D. help syslog
多项选择题 Two devices on an Ethernet segment sent frames at the same time causing a collision. Which twostatements are true?（）
单项选择题 Which statement is true regarding the Junos OS?（）
多项选择题 Which three statements are true about terms in a policy?（）
