Which command do you use to identify the meaning of a syslog message?（）

单项选择题What information does the help reference command provide?（）

A. A brief description of commands and their default values
B. The serial number and version number of the device used to open a support case with JTAC
C. A list of all the active hardware alarms on the device
D. A display of the current configuration while in operational mode

单项选择题You need to control SSH, HTTP, and Telnet access to an MX240 router through any interface.You have decided to use a firewall filter. How should you apply the firewall filter?（）

A. as an outbound filter on interface fxp0
B. as an outbound filter on interface lo0
C. as an inbound filter on interface fxp0
D. as an inbound filter on interface lo0

单项选择题Which configuration causes RIP-learned routes to be advertised to other RIP neighbors?（）

A. set protocol rip no-passive
B. top edit policy-options policy-statement demo   set term 1 from protocol rip   set term 1 then accept   top set protocols rip group internal export demo
C. set protocols rip advertise in-out
D. top edit policy-options policy-statement demo   set term 1 from active routes   set term 1 then accept   top set protocols rip group internal export demo

多项选择题Which two can be used to create and apply an export policy that advertises static routes to RIP neighbors?（）

A. set protocols rip export demo
B. edit policy-options policy-statement demo   set term 1 from protocol static   set term 1 then accept
C. edit policy-options policy-statement demo   set term 1 from protocol static accept
D. set protocols rip group internal export demo

多项选择题What are three terminating actions for firewall filters?（）

A. reject
B. drop
C. permit
D. accept
E. discard