642-889 pdf

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6.Which flavor of MPLS Layer 3 VPN has MPLS enabled on PE-CE links?

A. basic

B. CSC

C. inter-AS

D. AToM

E. VPLS

Answer: B

 

7.Which MP-BGP address family must be configured to use VPLS autodiscovery in a Cisco IOS XR

router?

A. address-family l2vpn vpls-vpws

B. address-family vpnv4 unicast

C. address-family ipv4 mdt

D. address-family ipv4 tunnel

E. address-family vpls vfi

Answer: A

 

8.In MPLS Layer 3 VPN implementations, what is used on the PE router to isolate potential overlapping

routing information between different customers?

A. route targets

B. VRFs

C. VC IDs

D. pseudowire IDs

E. pseudowire classes

Answer: B

 

9.Within the service provider IP/MPLS core network, what must be implemented to enable Layer 3 MPLS

VPN services?

A. IS-IS or OSPF on all the PE and P routers

B. MP-BGP between the PE routers

C. RSVP on all the PE and P routers

D. targeted LDP between the PE routers

E. LDP between the CE and PE routers

Answer: B

 

10.In MPLS Layer 3 VPN implementations, which mechanism is used to control which routes are

imported to a VRF?

A. RT

B. RD

C. VC ID

D. PW ID

E. VRF ID

Answer: A

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