NEW QUESTION 1
Which protocol is used to hide customer VLANs inside the provider backbone network?

• A. 802.1ap
• B. 802.1x
• C. 802.1ad
• D. 802.1q

Answer: C

NEW QUESTION 2
Which option describes what differentiates a U-PE from N-PE?

• A. U-PE has all BGP routes from different BGP AFIs.
• B. N-PE has VRF configured and exported via BGP.
• C. U-PE is configured to peer BGP with all other BGP neighbors.
• D. N-PE is used to physically connect customer edge routers.

Answer: A

NEW QUESTION 3
When implementing CSC services, which two methods can be used to exchange label information between the downstream CSC customer carrier and the CSC backbone carrier? {Choose two.}

• A. using MP-BGP
• B. using RSVP
• C. using IGP and LDP
• D. using back-to-back VRF
• E. using front VRF and internal VRF

Answer: AC

Explanation: http://www.cisco.com/en/US/docs/net_mgmt/ip_solution_center/4.0/mpls/user/guide/9_iscqsg.html
Since the CSC-PE routers do not have to carry external routes in the VRF routing table, they can use the incoming label in the packet to forward the customer carrier Internet traffic. Adding MPLS to the routers provides a consistent method of transporting packets from the customer carrier to the backbone carrier. MPLS allows the exchange of an MPLS label between the CSC-PE and the CSC-CE routers for every internal customer carrier route. The routers in the customer carrier have all the external routes either through IBGP or route redistribution to provide Internet connectivity.
When a backbone carrier and the customer carrier both provide BGP/MPLS VPN services, the method of transporting data is different from when a customer carrier provides only ISP services. The following list highlights those differences.
•When a customer carrier provides BGP/MPLS VPN services, its external routes are VPN-IPv4 routes. When a customer carrier is an ISP, its external routes are IP routes.
•When a customer carrier provides BGP/MPLS VPN services, every site within the customer carrier must use MPLS. When a customer carrier is an ISP, the sites do not need to use MPLS.

NEW QUESTION 4
Which two statements about implementing a separate MPLS VPN to provide customers Internet access are correct? {Choose two.}

• A. The Internet gateway router will act as a CE router.
• B. Customers will use separate interfaces for VPN and Internet access.
• C. Customers are assigned to the Internet VPN.
• D. Internet routes will be leaked from the PE global routing table to the customer VRF.

Answer: AC

NEW QUESTION 5
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

Answer: B

Explanation: http://blog.initialdraft.com/archives/1537/

NEW QUESTION 6
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

Explanation: http://www.cisco.com/en/US/docs/routers/asr9000/software/routing/configuration/guide/rcasr9kstat.html#wp1041 359

NEW QUESTION 7
What happens if the destination MAC address is not present in the table for the packets that are received on one of the ACs in VPLS?

• A. Packets are switched only to the PW.
• B. Packets are flooded only to the other local ACs.
• C. Packets are flooded on all other ACs and on all PWs that are associated with the bridge domain.
• D. Packets are dropped.

Answer: C

NEW QUESTION 8
When implementing nonhierarchical VPLS with eight PE routers, how many total PWs will be required between the PE routers?

• A. 8
• B. 16
• C. 28
• D. 32
• E. 64

Answer: C

Explanation: 8* {8-1} /2

NEW QUESTION 9
On Cisco IOS XR platforms using the EVC infrastructure, which command is used to enable a Layer 2 VPN subinterface?

• A. interface gi0/0/0/0.10 switchport access vlan 10
• B. interface gi0/0/0/0.10 switchport mode tunnel dot1q-tunnel
• C. interface gi0/0/0/0.10 switchport mode trunk
• D. interface gi0/0/0/0.10 bridge-group 10
• E. interface gi0/0/0/0.10 l2transport

Answer: E

Explanation:

NEW QUESTION 10
An engineer is configuring VPLS BGP-based autodiscovery on a Cisco IOS XE PE router. Which two configurations must be included for proper implementation? {Choose two.}

• A. router bgp 61000neighbor 172.16.10.2 remote-as 61000
• B. router bgp 61000address-family l2vpn vpls send-community extended
• C. router bgp 61000neighbor 172.16.10.2 remote-as 62000
• D. router bgp 61000address-family l2vpn vpls send-community-eBGP
• E. l2vpn vfi context vpls1 autodiscovery bgp signaling ldp router bgp 61000neighbor 172.16.10.2 remote-as 62000
• F. l2vpn vfi context vpls1 autodiscovery bgp signaling ldp router bgp 61000neighbor 172.16.10.2 remote-as 61000

Answer: AB

NEW QUESTION 11
Which two statements regarding Cisco 6PE operations are correct? {Choose two.}

• A. The top label in the label stack is assigned by MP-BGP, and it is used to reach the egress PE.
• B. The inner label in the label stack is assigned by MP-BGP, and it is used for IPv6 forwarding at the egress PE.
• C. The top label in the label stack is assigned by LDP, and it is used to reach the egress PE.
• D. The inner label in the label stack is assigned by LDP, and it is used for IPv6 forwarding at the egress PE.

Answer: BC

Explanation: http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6553/prod_presentation0900aecd80311df4.pdf

NEW QUESTION 12
The Cisco IOS XR address-family ipv4 labeled-unicast and the Cisco IOS/IOS XE neighbor send-label commands are used in which MPLS implementation?

• A. Cisco MPLS TE
• B. CSC using MP-BGP for label exchange
• C. back-to-back VRF
• D. AToM
• E. VPLS

Answer: B

Explanation: http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fscscleb.pdf
The MPLS VPN-Carrier Supporting Carrier-IPv4 BGP Label Distribution feature lets you configure your carrier- supporting-carrier network to enable Border Gateway Protocol {BGP} to transport routes and Multiprotocol Label Switching {MPLS} labels between the backbone carrier provider edge {PE} routers and the customer carrier customer edge {CE} routers using multiple paths. Previously, you had to use Label Distribution Protocol {LDP} to carry the labels and an Internal Gateway Protocol {IGP} to carry the routes between PE and CE routers to achieve the same goal.
The benefits of using BGP to distribute IPv4 routes and MPLS label routes are:
• BGP takes the place of an IGP and LDP in a Virtual Private Network {VPN} forwarding/routing instance {VRF} table. You can use BGP to distribute routes and MPLS labels. Using a single protocol instead of two simplifies the configuration and troubleshooting.
• BGP is the preferred routing protocol for connecting two Internet service providers {ISPs}, mainly because of its routing policies and ability to scale. ISPs commonly use BGP between two providers.
This feature enables those ISPs to use BGP.

NEW QUESTION 13
A customer requests Internet through its MPLS provider. Which Internet design model guarantees maximum security and easier provisioning?

• A. Internet access through global routing
• B. Internet access through route leaking
• C. Internet access through a separate VPN service
• D. Internet access through multisite

Answer: C

NEW QUESTION 14
Which statement regarding the Cisco IOS BGP configuration exhibit is correct?

• A. None of the routers will receive IPv4 BGP routes.
• B. Only the 172.16.2.1 and 172.16.3.1 neighbors will receive both VPNv4 routes and IPv4 BGP routes.
• C. Only the 172.16.3.1 neighbor will receive both VPNv4 routes and IPv4 BGP routes.
• D. All three neighbors {172.16.1.1, 172.16.2.1, and 172.16.3.1} will receive both VPNv4 routes and IPv4 BGP routes.
• E. All three neighbors {172.16.1.1, 172.16.2.1, and 172.16.3.1} will receive IPv4 BGP routes.

Answer: C

NEW QUESTION 15
A network engineer is tasked to implement an AToM VPN for a given customer to emulate a Frame Relay virtual circuit over the MPLS-enabled core network. Which command enables Frame Relay to forward frames from the attachment circuit over the emulated session in regular Cisco IOS Software?

• A. ip route 0.0.0.0 0.0.0.0 tailend_router_ip
• B. encapsulation frame-relay
• C. frame-relay switching
• D. frame-relay intf-type dce

Answer: C

NEW QUESTION 16
Based on the Cisco IOS XR VRF configuration exhibit,

Which two data flows between the MPLS VPNs will be allowed? {Choose two.}

• A. The CustomerA central site can communicate with the CustomerB central site.
• B. The CustomerA central site can communicate with all CustomerA sites.
• C. The CustomerA central site can communicate with all CustomerB sites.
• D. The CustomerA sites can communicate with all CustomerB sites.

Answer: AB