Which two QoS
题目
Which two QoS classification and marking statements are true?()
- A、 In a Frame Relay network, delay sensitive traffic is tagged with the discard eligible (DE) bit.
- B、 In an MPLS network, the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field
- C、 In an MPLS network, the MPLS EXP bits are used to identify up to 16 CoS values.
- D、 The differentiated services code point (DSCP) field consists of the first three bits of the IP precedence field in the header of an IP packet.
- E、 The 802.10 standard uses a three bitfield referred to as the user priority bits (PRI) to mark packets as belonging to a specific CoS.