单项选择题
A. [edit] user@host# set applications application voicecube inactivity-timeout never
B. [edit] user@host# set applications application voicecube inactivity-timeout 2
C. [edit] user@host# set applications application voicecube destination-port 5060
D. [edit] user@host# set security policies from-zone trust to-zone trust policy intrazone then timeout never
单项选择题 Click the Exhibit button. In the exhibit, what is the function of the configuration statements?（）
单项选择题 Click the Exhibit button. Given the configuration shown in the exhibit, which protocol(s) are allowed to communicate with the device on ge-0/0/0.0?（）
多项选择题 Click the Exhibit button. Assume the default-policy has not been configured.Given the configuration shown in the exhibit, which two statements about traffic from host_a in the HR zone to host_b in the trust zone are true? （）(Choose two.)
