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NEW QUESTION 1
When configuring an EoMPLS PW on a Cisco IOS XR router, what are the two supported transport modes? {Choose two.}

  • A. ethernet {Ethernet port mode}
  • B. ip {routed mode}
  • C. vlan {VLAN-tagged mode}
  • D. transparent {bridged mode}

Answer: AC

Explanation: http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.8/mpls/configuration/guide/gc38v2.html#wp1072883
•Ethernet Port Mode
•Ethernet Remote Port Shutdown
•VLAN Mode
•Inter-AS Mode
•QinQ Mode
•QinAny Mode
•Mac-in-Mac Protocol {Provide Backbone Bridging}
642-889 dumps exhibit

NEW QUESTION 2
In which configuration mode is a route distinguisher configured in a Cisco IOS XR router?

  • A. config-vrf
  • B. config-vrf-af
  • C. config-bgp
  • D. config-bgp-af
  • E. config-bgp-vrf

Answer: E

Explanation: http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.6/routing/configuration/guide/rc36book.pdf
642-889 dumps exhibit

NEW QUESTION 3
Refer to the exhibit.
642-889 dumps exhibit
A customer wants to deploy an IPv6 VPN network over the MPLS provider. Which option describes what must be enabled on the MPLS provider to support this request?

  • A. IPv6 should be deployed inside the core network of the provider.
  • B. LDP also should be configured to provide labels for IPv6 routes.
  • C. MP-iBGP VPNv6 session should be configured with current IPv4 addresses.
  • D. MP-iBGP IPv6 session should be configured with current IPv4 addresses.

Answer: C

NEW QUESTION 4
Which two Layer 2 VPN methods support interworking between customer sites with different Layer 2 encapsulation at each end {for example, Frame Relay to Ethernet interworking}? {Choose two.}

  • A. AToM
  • B. VPLS
  • C. GET VPN
  • D. L2TPv3

Answer: AD

Explanation: http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gtl2tpv3.html#wp1040784
The Layer 2 Tunnel Protocol Version 3 feature expands on Cisco support of the Layer 2 Tunnel Protocol Version 3 {L2TPv3}. L2TPv3 is an Internet Engineering Task Force {IETF} l2tpext working group draft that provides several enhancements to L2TP for the capability to tunnel any Layer 2 payload over L2TP.
Specifically, L2TPv3 defines the L2TP protocol for tunneling Layer 2 payloads over an IP core network using Layer 2 virtual private networks {VPNs}. Benefits of this feature include the following:
•L2TPv3 simplifies deployment of VPNs
•L2TPv3 does not require Multiprotocol Label Switching
•L2TPv3 supports Layer 2 tunneling over IP for any payload http://www.cisco.com/en/US/products/ps6646/products_ios_protocol_option_home.html
Cisco Any Transport over MPLS {AToM} is a solution for transporting Layer 2 packets over an MPLS backbone. It enables Service Providers to supply connectivity between customer sites with existing data link layer {Layer 2} networks via a single, integrated, packet-based network infrastructure: a Cisco MPLS network. Without separate networks that each have network management environments, Service Providers can deliver Layer 2 connections over an MPLS backbone.
Cisco AToM provides a common framework to encapsulate and transport supported Layer 2 traffic types over an MPLS network core. Service Providers can use a single MPLS network infrastructure to offer connectivity for supported Layer 2 traffic and for IP traffic in Layer 3 VPNs.

NEW QUESTION 5
Refer the exhibit.
642-889 dumps exhibit
642-889 dumps exhibit
642-889 dumps exhibit
On PE7, what is the pseudowire ID that connects to the 10.8.1.1 neighbor?

  • A. 70
  • B. 80
  • C. 123
  • D. 0x840001
  • E. 0x4000080

Answer: C

Explanation: # show vfi

NEW QUESTION 6
When implementing EoMPLS PWs, which configuration is optional?

  • A. matching PW ID on both ends
  • B. Xconnect
  • C. Cisco Express Forwarding
  • D. control word

Answer: D

Explanation: 642-889 dumps exhibit

NEW QUESTION 7
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 8
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 9
When implementing Layer 3 MPLS VPNs on Cisco IOS/IOS XE PE routers, which PE-to-CE routing protocol requires a separate routing process to be created for each VRF?

  • A. EIGRP
  • B. RIPv2
  • C. OSPF
  • D. BGP

Answer: C

NEW QUESTION 10
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 11
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

Explanation: 642-889 dumps exhibit
642-889 dumps exhibit

NEW QUESTION 12
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.
642-889 dumps exhibit
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

NEW QUESTION 13
Which two methods can be used for VPLS PW signaling? {Choose two.}

  • A. static
  • B. BGP
  • C. IGP
  • D. LDP
  • E. RSVP

Answer: BD

Explanation: 642-889 dumps exhibit

NEW QUESTION 14
Which method is used to provide inter-AS AToM services?

  • A. back-to-back VRF
  • B. targeted LDP
  • C. pseudowire stitching
  • D. AToM interworking
  • E. Cisco MPLS TE tunnels
  • F. autodiscovery

Answer: C

Explanation: http://www.cisco.com/en/US/docs/optical/cpt/r9_3/configuration/guide/cpt93_configuration_chapter_0111.html
642-889 dumps exhibit
642-889 dumps exhibit

NEW QUESTION 15
Refer to the exhibit.
642-889 dumps exhibit
XR2 must be configured with a static route for 2.2.2.0/24 subnet toward CE2 into the VRF ABC table. Which configuration achieves this goal?

  • A. router static vrf ABC2.2.2.0/24 10.10.24.2
  • B. router static vrf ABC2.2.2.0/24 10.10.24.2address-family ipv4 unicast
  • C. router static vrf ABCaddress-family ipv4 unicast 2.2.2.0/24 10.10.24.2
  • D. router staticaddress-family ipv4 unicast vrf ABC2.2.2.0/24 10.10.24.2

Answer: C

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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