| Exam 642-887 | Question id=3198 | QOS in a Service Provider IP NGN Environment |
With unmanaged CE routers, at which point in the service provider network is the QoS trust boundary, and what is required at the trust boundary?
| A. |
between the CE and PE router and mapping of the customer traffic classes into the service provider traffic classes at the PE router ingress | |
| B. |
between the CE and PE router and trusting the QoS markings from the CE router and applying the required QoS mechanisms based on the customer QoS markings | |
| C. |
between the PE and the P router and mapping of the customer traffic classes into the service provider traffic classes at the P router ingress | |
| D. |
between the PE and P router and trusting the QoS markings from the CE router and applying the required QoS mechanisms based on the customer QoS markings | |
| E. |
between the customer network and the CE router ingress and applying the required egress QoS policy on the CE router |