多项选择题 In the admin GUI, you navigate to "System" > "Status" > "Active Users". You see several buttons, including "Delete Session", "Delete All Sessions". "Refresh Roles", and "Disable All Users".Which two statements are true?（）

单项选择题 You are validating the configuration of your SRX Series device and see the output shown below.What does this indicate?（）

单项选择题 When using RADIUS as an external authentication method for 802.1X authentication for the Junos Pulse Access Control Service, what must you do to ensure that the RADIUS authentication works properly?（）