多项选择题
What are two reasons why a route might be hidden?（）
A. route preference B. routing loop C. invalid next hop D. routing policy
多项选择题 Which two login-class permissions could permit a user to view the system hierarchy of the active configuration? （）
单项选择题 Which statement is true regarding the Junos OS?（）
单项选择题 Which command displays the amount of space available on the storage media（）
