多项选择题 Which two statements about login classes correctly define their usage within the JUNOS software?（）

单项选择题 How are the commands a user is allowed to enter defined in JUNOS?（）

单项选择题 You have been asked to configure a login class which will permit its users to view and edit the configuration. The class should only allow the configuration of the interfaces and firewall heirarchies. Which configuration correctly accomplishes this?（）