642-889 試験問題を無料オンラインアクセス

Which technology does an N-PE most likely use to pass traffic to the U-PE that is destined for the access switch?

• A.OSPF
• B.IS-IS
• C.MPLS TE
• D.pseudowire

For which reason does Cisco 6PE use two MPLS labels in the data plane?

• A.Traffic engineering is possible, and the P routers do not have to be IPv6-aware.
• B.With two labels the Flow Label field in the IPv6 header can be emulated if the routers are not IPv6-aware
• C.PHP can be used, and the penultimate hop router does not have to be IPv6-aware.
• D.Load balancing is not possible if the P routers are not Ilrv6-aware.

In Layer 3 MPLS VPN implementations, if some of the VPNv4 routes on one PE router do not appear on another PE router, what could be the problem?

• A.RD mismatch between the PE routers
• B.RT export and import configuration errors
• C.RD export and import configuration errors
• D.VRF name mismatch between the PE routers

Which two MPLS QoS models described by RFC3270 are used for CE-PE QoS implementation? (Choose two.)

• A.best effort
• B.integrated services
• C.differentiated services
• D.uniform
• E.pipe

A customer needs Internet and MPLS services from the service provider and needs to ensure traffic from the Internet network does not constrain MPLS traffic. Which shared MPLS/Internet service type best accommodates this requirement?

• A.partial separation
• B.Internet tunnel over MPLS
• C.full separation
• D.Multisite Internet Access