单项选择题 You issue the ping interface tl-1/1/0 1.1.1.1 bypass-routing count 1000 rapid command.Which statement is correct?（）

单项选择题 Which statement is true regarding syslog on Junos devices?（）

单项选择题 Youve configured an interface with an IP address and commited the change. You then commited a change that added an exception in a firewall filter to allow this network through the filter. You realize that this work was done on the wrong router. How do you undo all these changes?（）