Pass Your Exam On First Try Real Cisco 642-889 Exam Braindumps (51-60)

When implementing VPLS on Cisco IOS XR routers, the customer-facing subinterfaces on the PE routers are assigned to which Cisco EVC component?

A.    bridge group
B.    bridge domain
C.    VFI
D.    Layer 2 transport
E.    BVI

Answer: B

What is an advantage of using the Cisco EVC infrastructure to implement carrier-class Ethernet services that are not available on non-EVC-capable platforms?

A.    PW redundancy
B.    interworking support
C.    PW stitching support
D.    flexible frame-matching support and VLAN tag manipulation
E.    local cross-connect support

Answer: D

When implementing a Layer 2 transport subinterface on a Cisco IOS XR router, which encapsulation option is used to match any packets that are not matched by any other service instances?

A.    default
B.    untagged
C.    any
D.    tag

Answer: A

When configuring VPLS on the Cisco ASR 9000, which three configurations are required under the l2vpn configuration mode? (Choose three.)

A.    bridge-group
B.    bridge-domain
C.    xconnect
D.    vfi
E.    encapsulation

Answer: ABD

Which option is the correct command to define an interface as Layer 2 on the Cisco ASR 9000?

A.    RP/0/RSP0/CPU0:R1(config)#int gigabitEthernet 0/6/0/0 l2transport
B.    RP/0/RSP0/CPU0:R1(config)#int gigabitEthernet 0/6/0/0 layer2
C.    RP/0/RSP0/CPU0:R1(config)#int gigabitEthernet 0/6/0/0 switchport
D.    RP/0/RSP0/CPU0:R1(config)#int gigabitEthernet 0/6/0/0 xconnect

Answer: A

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

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

With Layer 3 MPLS VPN implementations on Cisco IOS XR PE routers, an interface is assigned to a VRF using the vrf command in which configuration mode?

A.    RP/0/RP0/CPU0:PE(config-vrf)#
B.    RP/0/RP0/CPU0:PE(config-if)#
C.    RP/0/RP0/CPU0:PE(config-bgp)#
D.    RP/0/RP0/CPU0:PE(config-bgp-af)#

Answer: B

Refer to the partial Cisco IOS XR PE router configuration exhibit for supporting a Layer 3 MPLS VPN customer using EIGRP AS 20 as the CE-to-PE routing protocol.
The MPLS VPN customer is having problems receiving the EIGRP routes on the different customer site CE routers. What is wrong with this configuration that is causing the problem?

A.    The router eigrp command is referencing the wrong AS number.
B.    The redistribute eigrp command is missing the metric transparent option.
C.    The redistribute eigrp command is referencing the wrong AS number.
D.    The redistribute bgp command is missing the subnets option.
E.    The redistribute eigrp command is missing the subnets option.

Answer: C

In which Cisco IOS XR configuration mode is the redistribute static command applied to enable the redistribution of static VRF routes between the PE routers?

A.    RP/0/RP0/CPU0:PE(config-router)#
B.    RP/0/RP0/CPU0:PE(config-bgp)#
C.    RP/0/RP0/CPU0:PE(config-bgp-vrf)#
D.    RP/0/RP0/CPU0:PE(config-bgp-vrf-af)#

Answer: D

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