多项选择题
A. Traffic needs be compressed.
B. Quality of service must be enabled.
C. A service tunnel must exist in at least one direction.
D. PFA must be enabled on the client-side WX device.
多项选择题 Which three packet interception methods are configurable in WX devices?（） (Choose three.)
多项选择题 Which three applications are disabled for compression by default?（） (Choose three.)
单项选择题 Click the Exhibit button. In the exhibit, the Compression > Basic > Endpoints page shows an icon of a red "X" under the tunnel status "IN" column. The error message displays, "No Request Received". What does this indicate?（）