Which command do you use to show active alarms?（）

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?（）

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?（）

A. No logging is enabled by default
B. By default the information is stored in all file named events
C. Only the message severity level must be configured
D. You can configure the router to send log messages to the console

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?（）

A. rollback 2
B. rollback 1
C. rollback 0
D. rollback 3

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?（）

A. The OSPF routes are located in the inet 4 routing table
B. THe OSPF routes are located in the inet 0 routing table
C. The OSPF routes are located in the inet 2 routing table
D. The OSPF routes are located in the inet 4.3 routing table

多项选择题Which two external authentication methods are supported by the Junos OS for user authentication?（）

A. RADIUS
B. KERBEROS
C. LDAP
D. TACACS+