单项选择题
A. ftp-group
B. ftp-users
C. firewall-user
D. nancy and walter
单项选择题 Click the Exhibit button. Referring to the exhibit, which statement contains the correct gateway parameters?（）
单项选择题 Click the Exhibit button. A network administrator receives complaints that the application voicecube is timing out after being idle for 30 minutes.Referring to the exhibit, what is a resolution?（）
单项选择题 Click the Exhibit button. In the exhibit, what is the function of the configuration statements?（）
