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NEW QUESTION 1
Which organization provides and promotes a standards-based description of service provider services offering?

  • A. MEF
  • B. IETF
  • C. IEEE
  • D. ITU

Answer: A

NEW QUESTION 2
What is the primary difference between 6PE and 6VPE?

  • A. 6VPE does not require an MPLS core.
  • B. 6VPE requires an IPv6-aware core.
  • C. 6VPE provides IPv6 VPN services.
  • D. 6VPE tunnels IPv6 packets inside IPv4 packets.

Answer: C

Explanation: 6PE is for transporting ipv6 natively and 6VPE is for ipv6 mpls vpns

NEW QUESTION 3
A Cisco IOS XR router is acting as a PE and is running EIGRP as the CE-PE routing protocol. SOO must be configured. Under which subconfiguration mode should SOO be configured?

  • A. RP/0/0/CPU0:XR1{config-eigrp}
  • B. RP/0/0/CPU0:XR1{config-eigrp-vrf-af-if}
  • C. RP/0/0/CPU0:XR1{config-eigrp-vrf}
  • D. RP/0/0/CPU0:XR1{config-eigrp-vrf-af}

Answer: B

NEW QUESTION 4
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. full separation
  • C. Multisite Internet Access
  • D. Internet tunnel over MPLS

Answer: B

NEW QUESTION 5
Refer the exhibit.
642-889 dumps exhibit
642-889 dumps exhibit
642-889 dumps exhibit
On PE7, which encapsulation method is used on the pseudowire that connects to the 10.8.1.1 neighbor?

  • A. MPLS
  • B. L2TPv3
  • C. IP
  • D. LDP
  • E. Ethernet

Answer: B

Explanation:
show xconnect all
check value is mpls or l2tp or Ethernet etc in segment field

NEW QUESTION 6
Refer to the partial Cisco IOS XR PE router VRF configuration exhibit.
642-889 dumps exhibit
To implement a central-service VPN supporting both customer1 and customer2, what will be the required corresponding VRF configuration on the central-service-server PE router?

  • A. vrf central-service-server address-family ipv4 unicast import route-target3:12:2export route-target 3:12:1!
  • B. vrf central-service-server address-family ipv4 unicast import route-target3:12:1export route-target 3:12:2!
  • C. vrf central-service-server address-family ipv4 unicast import route-target3:11:11:2export route-target 3:11:11:2!
  • D. vrf central-service-server address-family ipv4 unicastimport route-target 3:11:11:22:12:2export route-target 3:11:11:22:12:2!

Answer: A

NEW QUESTION 7
Which option is the minimal configuration required inside the L2VPN section of a Cisco IOS XR PE router to activate VPLS functionality?

  • A. l2vpnbridge group test bridge-domain testinterface TenGigE0/0/0/1.30!vfi testvpn-id 600 autodiscovery bgp rd 10.10.10.1:30route-target 1:300 signaling-protocol bgp ve-id 10
  • B. l2vpnbridge group test bridge-domain testinterface TenGigE0/0/0/1.30!vfi testneighbor 10.10.10.2 pw-id 1400mpls static label local 1400 remote 1500
  • C. l2vpnbridge group test bridge-domain testinterface TenGigE0/0/0/1.30!vfi testneighbor 10.10.10.2 pw-id 1400
  • D. l2vpnbridge group test bridge-domain testinterface TenGigE0/0/0/1.30!vfi testvpn-id 600 autodiscovery bgp rd 10.10.10.1:30route-target 1:300 signaling-protocol bgp
  • E. l2vpnbridge group test bridge-domain test vfi test autodiscovery bgp rd 10.10.10.1:30route-target 1:300 signaling-protocol bgp ve-id 10

Answer: C

NEW QUESTION 8
When implementing MPLS Layer 3 VPNs with customers running OSPF as the CE-PE routing protocol, the service provider MPLS backbone looks like what to the CE routers?

  • A. the backbone {Area 0}
  • B. an external routing domain
  • C. a superbackbone that is transparent to the CE OSPF routers
  • D. a transit area {similar to a transit area for supporting virtual links}

Answer: C

NEW QUESTION 9
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. RT
  • B. RD
  • C. VC ID
  • D. PW ID
  • E. AS number

Answer: B

NEW QUESTION 10
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

Explanation: 642-889 dumps exhibit

NEW QUESTION 11
On Cisco IOS and IOS XE Layer 3 MPLS VPN implementations, when redistributing the customer RIP routes into MP- BGP, the RIP metric is copied into which BGP attribute?

  • A. local preference
  • B. weight
  • C. MED
  • D. extended community

Answer: C

Explanation: https://supportforums.cisco.com/thread/191993
Use the red bgp <asn> metric transparent command to preserve the RIP metrics.
When RIP routes are redistributed into BGP, the route metric is stored in the BGP MED value. When BGP routes are redistributed into RIP, and the transparent keyword used, the MED value is copied back as the RIP metric. Without the transparent keyword, the metric value specified is applied to all the routes.

NEW QUESTION 12
Which Layer 2 protocol parameters can be carried inside the control word when implementing AToM service?

  • A. PW ID
  • B. Frame Relay FECN, BECN, and DE bits
  • C. encapsulation type
  • D. VC type

Answer: B

Explanation: http://www.cisco.com/en/US/products/ps6603/products_qanda_item09186a008009d4e3.shtml#wp39173
Q. How does Frame Relay over MPLS work?
A. Traffic is encapsulated in MPLS packets and forwarded across the MPLS network. When encapsulating Frame Relay over MPLS, the Frame Relay header and the frame check sequence {FCS} are stripped from the packet. The bits for Backward Explicit Congestion Notification {BECN}, Forward Explicit Congestion Notification {FECN}, Discard Eligibility {DE} and Command/Response {C/R} are carried across the MPLS network in the "Control Word" header.

NEW QUESTION 13
When implementing EoMPLS on Cisco IOS XR routers, which command under the l2vpn configuration mode is used to define the pseudowire?

  • A. pbb
  • B. xconnect
  • C. connect
  • D. bridge
  • E. bridge-domain

Answer: B

Explanation: http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/eompls.html
642-889 dumps exhibit

NEW QUESTION 14
What is required on a Cisco IOS XR router to assign an interface to a VRF?

  • A. Assign the VRF to the interface, and then re-enable Cisco Express Forwarding on the interface.
  • B. Assign the VRF to the interface, and then reset the CE-to-PE routing protocol process.
  • C. Shut the interface, assign the VRF to the interface, and then no shut the interface.
  • D. Remove the IP address configuration on the interface, assign the VRF to the interface, and then reconfigure the IP address on the interface.

Answer: D

Explanation: http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.5/mpls/configuration/guide/gc35v3.html#wp1080845
642-889 dumps exhibit

NEW QUESTION 15
Which Cisco IOS XR BGP configuration command is required to enable MP-BGP to carry IPv6 VPN routes?

  • A. address-family ipv4 unicast
  • B. address-family ipv6 unicast
  • C. address-family vpnv4 unicast
  • D. address-family vpnv6 unicast

Answer: D

Explanation: http://www.cisco.com/en/US/tech/tk872/technologies_configuration_example09186a0080b3e11d.shtml

NEW QUESTION 16
An engineer is deploying L2VPN service between two different Layer 2 encapsulations. Which feature should be set up to accomplish this task?

  • A. interworking VLAN on both the provider edge routers
  • B. interworking Ethernet on both the provider edge routers with VLAN tagging
  • C. interworking IPv4 on both the customer edge routers
  • D. interworking IPv4 on both the provider edge routers

Answer: D

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