多选题What are two requirements when using Packet Flow Acceleration? （）(Choose two.)ATraffic needs be compressed.BQuality of service must be enabled.CA service tunnel must exist in at least one direction.DPFA must be enabled on the client-side WX device.
题目
多选题
What are two requirements when using Packet Flow Acceleration? （）(Choose two.)
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.