What layer of the TMN （telecommunications management network） model does CTM fit into？（）

Which Modular QoS CLI （MQC） based output queuing method is designed to support multiple trafficclasses including VoIP traffic， mission-critical traffic， interactive traffic， and default class traffic？（）

What are three common reasons for ATM CRC errors？（）

Which configuration prevents traffic that is sourced from the unique local address scope to be sent out ofthe link to the upstream service provider？（）

When an MPLS Layer 2 VPN runs in the hub-and-spoke model， where is QoS implemented？（）

Which statement about implementing the Cisco IPv6 provider Edge Router over MPLS is true？（）

Two islands of IPv6 networks that are running ISIS （IPv6 IGP） must be connected using a tunnel over anIPv4 network. Which tunneling method can be used to achieve this goal？（）

Cisco IOS XR Software Multicast Routing Implementation， which three features are supported in IPv6 onCisco CRS router？（）

Assume that the PEs are separated by Multiple P routers.How many labels should the ingress PE push for BPE functionality？（）

MPLS label mapping on an LSR is displayed by which IOS command？（）