A service provider offers four classes of service for MPLS VPN customer with the following IPP/EXP values: i. voice = 5 ii. video = 4 iii. priority data = 3 iv. best-effort data = 0 The service-provider also supports multicast VPN services in the priority data and best-effort classes. Multicast VPN is implemented as a draft-rosen profile. On a P router, in the MPLS core, the ingress QoS policy-map must classify all incoming packets, so that different classes of traffic can be property handled in fabric queues and egress queues. All types of packets in the core network must be covered. Which ingress classification offers the optimal performance and provides the minimum number of actions that match the service provider QoS requirements? 

Answer options:

A. class-map match-any VOICEmatch mpls experimental topmost 5class-map match-any VIDEOmatch mpls experimental topmost 4class-map match-any CONTROLmatch mpls experimental topmost 6 7class-map match-any PRIORITYmatch mpls experimental topmost 3!policy-mapINGRESSclass VOICEset gos-group 5class VIDEOset gos-group 4class CONTROLset gos-group 6class PRIORITYset gos-group 3class class-default
B. class-mapmatch-any VOICEmatch mpls experimental topmost 5match precedence ipv4 flash-overrideclass-map match-any VIDEOmatch mpls experimental topmost 4match precedence ipv4 criticalclass-map match-any CONTROLmatchprecedence ipv4 internet networkclass-map match-any PRIORITYmatch mpls experimental topmost 3match precedence ipv4 flash!policy-map INGRESSclass VOICEset gos-group 5class VIDEOset gos-group 4class CONTROLset gos- group 6class PRIORITYset gos-group 3class class-default
C. class-map match-any VOICEmatch mpls experimental topmost 5class-map match-any VIDEOmatch mpls experimental topmost 4class-map match-any CONTROLclass-map match-any PRIORITYmatch mpls experimental topmost 3match precedence ipv4 flash!policy-map INGRESSclass VOICEsetgos-group

A