Which statements about EXP about values corresponding to these three services is true?

Exhibit:

RTA is an edge route of the MPLS backbone network. It provides the access for users under layer 2 switches and differentiates user by subinterface. User access VALN 100 and has subscribed to the His ViIP, and services. According to 802 1p priorities, the value 0 indicates the HIS service, 1 indicates the VoIp service and 4 indicate the IPTV service. The DiffSerc model is deployed in E-LSP mode on the MPLS network,

And the STC is configured for subinterface on the access side of RTA (the qos phb disable command is not configured). Outgoing on the traffic on the G1/0/0.1 suninterface involves the His VoIP, and services on the access side of RTA .

Which statements about EXP about values corresponding to these three services is true?

A. At least three EXP values be contained, and the values are uncertain.

B. Only two EXP values be contains, and the values are certain.

C. The EXP values must be 0, 1, and 4.

D. Only one EXP may be contained, and the value is uncertain

View Answer

Answer: A