Which of the following statements are TRUE when discussing self-generated traffic QoS? (Choose two)

Which of the following statements are TRUE when discussing self-generated traffic QoS? (Choose two)
A . In order to mark Layer 2 traffic, sgt-qos will set various ToS bits.
B . DSCP bits can be set per application, per routing instance.
C . The DSCP marking stays nc1 for all applications. Only the internal FC is manipulated across different applications.
D . In order to mark Layer 2 self-generated traffic, network interfaces must be set to dot1Q.
E . The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.

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Answer: B,D