单项选择题
A. The count parameter creates a counter that you can view with the show firewall command
B. The count parameter allows the router to count the number of pings for logging purposes
C. The count parameter allows the router to pause for 10000 seconds before sending out a ping
D. The count parameter allows the router to send out 1000 pings and then stop
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?（）
单项选择题 When attepting to view the OSPF routes in the routing table, you issue the command show route table inet but no OSPF routes are displayed. What is the problem?（）