642-889 exam

In MPLS Layer 3 VPN implementations, what is used at the PEs to transform the customer IPv4 prefixes into a unique 96-bit prefix?A . RTB . RDC . VC IDD . PW IDE . AS numberView AnswerAnswer: B

When using the Cisco EVC software infrastructure, a double-tagged frame with a customer VLAN of 10 and a service provider VLAN of 150 will be best matched by which encapsulation configuration?A . encapsulation dot1q 10 second-dot1q anyB . encapsulation dot1q 10 second-dot1q 150C . encapsulation dot1q 10 second-dot1q 50-200D ....

What type of routing is used between CE7 and PE7? A . OSPFB . BGPC . is-isD . RIPv2E . Static routingView AnswerAnswer: E

Which two statements regarding Cisco 6PE operations are correct? (Choose two.)A . The top label in the label stack is assigned by MP-BGP, and it is used to reach the egress PC . The inner label in the label stack is assigned by MP-BGP, and it is used for IPv6...

Which two statements regarding Cisco 6PE operations are correct? (Choose two.)A . The top label in the label stack is assigned by MP-BGP, and it is used to reach the egress PC . The inner label in the label stack is assigned by MP-BGP, and it is used for IPv6...

Which statement is correct regarding the pseudowire on connects PE7 to the 10.8.1.1 neighbor? A . The control word is enabled on both ends of the pseudowireB . The MTU size is 1500 bytes on both ends of the pseudowireC . Pseudowire backup is enabledD . The pseudowire is in...

On Cisco IOS XR platforms using the EVC infrastructure, which command is used to enable a Layer 2 VPN subinterface?A . interface gi0/0/0/0.10 switchport access vlan 10B . interface gi0/0/0/0.10 switchport mode tunnel dot1q-tunnelC . interface gi0/0/0/0.10 switchport mode trunkD . interface gi0/0/0/0.10 bridge-group 10E . interface gi0/0/0/0.10 l2transportView AnswerAnswer:...

On PE7, which interface connects to the CE7 and what is the name of the VRF that interface is associated to? (Choose two.) A . Gi0/0/0/0B . Gi0/0/0/1C . Gi0/0/0/2D . Customer_1E . Customer_AF . Customer_CE7View AnswerAnswer: B,C

When implementing H-VPLS with QinQ access on Cisco Metro Ethernet switches, which two commands enable the QinQ tagging? (Choose two.)A . encapsulation dot1q {customer-vlan} second-tag {sp-vlan}B . encapsulation dot1q {sp-vlan} second-tag {customer-vlan}C . switchport mode dot1q-tunnelD . switchport mode trunkE . switchport access vlan {sp-vlan}F . switchport access vlan {customer-vlan}View...

Which Layer 2 protocol parameters can be carried inside the control word when implementing AToM service?A . PW IDB . Frame Relay FECN, BECN, and DE bitsC . encapsulation typeD . VC typeView AnswerAnswer: B