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CCIP Implementing Cisco MPLS Exam (MPLS) : 642-611 Exam

Exam Number/Code: 642-611
Exam Name: CCIP Implementing Cisco MPLS Exam (MPLS)
VUE Code: 642-611
Questions Type: Single choice,
Question Numbers of Real-exam: 55-65 questions

Exam : Cisco 642611

Title :

Implementing Cisco MPLS

Update : Demo

1.What is a benefit of CEF switching?
A.CEF supports IP source prefixbased switching using the FIB. B.CEF uses less memory than fast switching uses.
C.CEF is less CPU intensive than fast switching is.
D.CEF provides Netflow statistics with minimum CPU overhead. E.CEF allows multiple data planes to share a common control plane. Correct:C
2.What is a major drawback of using traditional IP routing over an ATM network when connecting multiple sites?
A.Each ATM switch in the path has to perform Layer 3 routing lookup. B.ATM virtual circuits have to be established between the different sites.
C.There is high ATM management overhead between the ATM switch and the router at each site. D.Each ATM switch has to be manually configured to participate in Layer 3 routing.
E.There is high PNNI overhead.
Correct:B
3.Refer to the diagram. What problem can be caused by the second P router summarizing the loopback address of the egress PE router?

A.The first P router will be faced with a VPN label which it does not understand.
B.The second P router will be faced with a VPN label which it does not understand.
C.The egress PE router will not be able to establish a label switch path (LSP) to the ingress PE router.
D.A label switch path (LSP) will be established from the ingress PE router to the egress PE router, an event that is not desirable.
E.The ingress PE router will not be able to receive the VPN label from the egress PE router via MPIBGP.
Correct:B
4.When nonadjacent LDP neighbors are used for implementing an MPLS traffic engineering

solution, how are the nonadjacent LDP neighbors discovered?
A.using multicast CRLSP (constraintbased LSP) B.using unicast CRLSP (constraintbased LSP) C.using multicast LDP hello messages
D.using unicast LDP hello messages
E.using multihop MPIBGP F.using multihop MPEBGP Correct:D
5.What best describes the following configuration example of allowasin? router bgp 100 addressfamily ipv4 vrf CustomerAneighbor 195.12.4.5 remoteas 123 neighbor 195.12.4.5 activateneighbor 195.12.4.5 allowasin 2
A.permits incoming BGP updates defined by accesslist 2
B.permits incoming BGP updates defined by classmap 2
C.permit incoming BGP updates defined by routemap 2
D.permits incoming BGP updates with no more than two occurrences of AS 100 in the AS path E.permits incoming BGP updates with no more than two occurrences of AS 123 in the AS path Correct:D
6.Look at the picture.

Correct:
Green choice1>Yellow Choice1
Green choice5>Yellow Choice2
Green choice9>Yellow Choice3
7.Refer to the exhibit. Based on the show outputs, which condition could be preventing the P1 router from establishing TDP adjacency with its neighbor over the s0/0.211 and s0/0.212 subinterfaces?

A.The s0/0.211 and s0/0.212 subinterfaces line protocol are in the down state.
B.The P1 router cannot establish a TCP session with its neighbors. C.The P1 router is missing the mpls label protocol LDP command.
D.The show mpls tdp neighbor command needs to be used to view the TDP neighbor status.
Correct:B
8.Look at the picture.

Correct:
Green choice1>Yellow Choice1
Green choice6>Yellow Choice2
Green choice2>Yellow Choice3
Green choice5>Yellow Choice4
Green choice3>Yellow Choice5
Green choice4>Yellow Choice6
9.What is the difference in implementation between a managed CE services MPLS VPN and a central services MPLS VPN?
A.RD assignment B.selective routes export C.selective routes import

D.MPBGP route redistribution filtering
E.CEPE routing process
F.none
Correct:B
10.Which three statements are correct regarding Layer 2 overlay VPNs and peertopeer VPNs?
(Choose three.)
A.Peertopeer VPNs require the establishment of virtual circuits to connect the different customer sites together.
B.Peertopeer VPNs require the service provider to participate in the customer routing, accepting customer routes, transporting them across the service provider backbone, and finally propagating them to other customer sites.
C.With peertopeer VPNs, the service provider is responsible for transport of Layer 2 frames between customer sites, and the customer takes responsibility for all higher layers.
D.The implementation of Layer 2 overlay VPNs is the traditional switchedWAN model, implemented with technologies like X.25, Frame Relay or ATM.
E.With Layer 2 overlay VPNs, the service provider is not aware of customer routing and has no information about customer routes.
F.It is simple to implement Layer 2 overlay VPNs because the Customer Edge (CE) router just needs a connection to the Service Provider’s Provider Edge (PE) router.
Correct:B D E
11.Refer to the exhibit. How many different VRFs are required to support the given connectivity requirements? Sites CE1A and CE1B require connectivity to each other. Sites CE2A and CE2B require connectivity to each other. Site CE1C requires connectivity to sites CE1A, CE1B, CE3A, and CE3B. Site CE2C requires connectivity to sites CE2A, CE2B, CE3A, and CE3B. Sites CE3A and CE3B require connectivity to each other and to CE1C and CE2C.

A.3 VRFs
B.4 VRFs C.5 VRFs D.6 VRFs E.8 VRFs Correct:C
12.With MPLS VPNs, if the CEPE routing protocol is BGP, which statement below is true?
A.The different customer sites must use different autonomous system numbers. B.Manual route redistribution between EBGP and MPBGP is required.
C.The SOO extended BGP community can be used to prevent routing loops.
D.A BGP virtual shamlink is required between the customer site’s CE routers to ensure optimal routing between the customer sites.
E.The customer’s autonomous system number must match the MPLS VPN service provider’s autonomous system number.
Correct:C
13.Which kind of link does a Layer 3 overlay VPN use?
A.emulated pointtopoint B.dedicated pointtopoint C.pointtomultipoint D.permanent virtual circuits

Correct:A
14.BGP is used as the CEPE routing protocol in an MPLS VPN. The customer routes are successfully propagated from the CE router to the ingress PE router, but they are not showing up
on the egress PE router. What is the most likely cause of the problem? A.There is a BGPtoMPBGP redistribution error on the ingress PE router. B.There is a MPBGPtoBGP redistribution error on the egress PE router.
C.One of the P routers is performing route summarization, breaking the path between the ingress and the
egress PE routers into two LSPs.
D.RTs attached to the CE routes exported by the ingress router are not matched by at least one of the import RTs on the egress PE router.
E.A route reflector is used to propagate the routes from the ingress PE router to the egress PE router, thus breaking the LSP.
Correct:D
15.In the diagram, the Internet is accessed through a dedicated Internet VPN implementation. Which routing table will PEIG use to forward packets from the Internet to Site2?

A.Global routing table
B.VPNv4 routing table
C.VRF A routing table
D.VRF Internet routing table
Correct:D
16.Refer to the exhibit. A diagram of a router connected to an MPLSenabled ATM switch via an LCATM MPLS interface, and a partial configuration for the MPLSenabled ATM switch and router are shown. Which statement describes what is incorrect about the configuration shown?

A.CEF has not been enabled on the router.
B.The VPI range of 23 is invalid.
C.The control VPI/VCI has not been set to 0/32 on the router. D.VCmerge has not been enabled on the ATM switch interface. E.The router has not been configured to specifically use LDP. Correct:A
17.Lab.

Correct:
18.Refer to the exhibit. A diagram of a router connected to an MPLSenabled ATM switch via an LCATM MPLS interface, and the partial configuration for the MPLSenabled ATM switch and router are shown. Which statement describes what is incorrect about the configuration?

A.The control VPI/VCI numbers do not match.
B.The ATM VPI range of 23 is invalid.
C.CEF has not been enabled on the router ATM 3/0.2 subinterface. D.VCmerge has not been enabled on the switch ATM 0/1/2 interface. E.The router has not been configured to specifically use LDP. Correct:A
19.In the diagram, Internet access is through a dedicated subinterface implementation. Which of its routing tables will PE2 use to forward packets from Site2 to Site1?

A.the global routing table
B.the VPNv4 routing table C.the VRF A routing table D.the VRF A FIB
E.the PEIG routing table
Correct:C
20.What are three characteristics of overlay VPNs? (Choose three.)
A.Service provider infrastructure appears as pointtopoint links to the customer routers. B.Routing protocols run directly between the customer routers.
C.Implementing optimum routing between customer sites requires a partial mesh of virtual circuits. D.Service provider PE routers use route filtering to isolate between different customers.
E.Service provider does not participate in customer routing.
Correct:A B E
21.The exhibit shows a topology where the customer is using Internet access through a central firewall at their central site. If the customer’s MPLS VPN and the Internet access traffic share the same service provider backbone, which two of the following statements are true? (Choose two.)

A.Customer Internet traffic can cross the service provider backbone twice, first as VPN traffic and then as
Internet traffic.
B.Each customer site CE router must perform NAT if the customer is using private IP addresses. C.Suboptimal routing of the customer’s VPN traffic will occur.
D.The PE routers will need to exchange both VPNv4 and IPv4 BGP routing updates. E.BGP must be used as the routing protocol between the CE and PE routers. Correct:A D
22.Which component of MPLS architecture is a simple labelbased forwarding engine that is independent of the type of routing protocol or label exchange protocol?
A.control plane B.data plane C.routing plane D.forwarding plane Correct:B
23.Look at the picture.

Correct:

Green choice2>Yellow Choice1
Green choice6>Yellow Choice2
Green choice4>Yellow Choice3
24.Refer to the exhibit. Customer XYZ is using an MPLS VPN to connect its locations of Site_A, Site_B, and Site_C. Each site uses OSPF as the CEPE routing protocol. After a new direct 56 kbps link was added between Site_A and Site_B, all applications degraded in response time only between Site_A and Site_B. What is the most probable cause and its solution?

A.A routing loop needs to be corrected by an OSPF down bit.
B.A routing loop needs to be corrected by the OSPF tag field. C.Suboptimal routing needs to be corrected by a virtual link. D.Suboptimal routing needs to be corrected by a sham link. Correct:D
25.Refer to the exhibit. Which two of the following statements about the MPLS configurations are true? (Choose two.)

A.The VPI range being configured is the default VPI range.
B.The router is missing the mpls label protocol ldp configuration command on its ATM 0/0.1 subinterface
to make it an LCATM enabled subinterface.
C.There is a problem with the configurations because the control VC should be set to 0 32 instead. D.The ATM switch is using VC merge since VC merge is enabled by default.
E.For MPLS label allocations, both VPI 6 and 7 can be used.
Correct:D E
26.When configuring Internet access using a separate MPLS VPN, which three statements are correct? (Choose three.)
A.The Internet backbone is separate from the MPLS VPN backbone.
B.Two dedicated physical or logical links between the PE and the CE routers are required. C.An Internet gateway is connected as a CE router to the MPLS VPN backbone.
D.An Internet gateway shall insert full Internet routing into the Internet VPN to achieve optimal routing.
E.The customer’s Internet access is enabled by combining the Internet VPN with the Customer VPN using overlapping VPN topology.
Correct:A C E
27.When configuring Internet access from a MPLS VPN using a separate subinterface, which two configurations are required on the PE router? (Choose two.)
A.Use the ip vrf forwarding command on the subinterface that is used for MPLS VPN access. B.Use the ip vrf forwarding command on the subinterface that is used for Internet access.
C.The CE router is configured as a BGP neighbor in both the global BGP process and inside the VPN in the VRF.
D.The PEtoCE VPN and Internet routing are configured using two separate addressfamily ipv4 vrf commands, one for VPN routing and one for Internet routing.
Correct:A C
28.What is the purpose of the global configuration command, ip dhcp relay information option vpn?
A.enables the DHCP relay agent to insert the VPN suboptions to the BOOTP request

B.enables the DHCP relay agent to convert the broadcast DHCP request to a unicast DHCP request to a
shared DHCP server
C.enables the DHCP relay agent to perform VRFaware NAT before forwarding the DHCP request to a shared DHCP server
D.enables ODAP (OnDemand Address Pool) on the DHCP relay agent
Correct:A
29.Using MPLS unicast IP forwarding, what will happen if an LSR receives an unlabeled incoming packet?
A.It will process switch the packet by doing a routing table lookup. B.It will forward the packet using the LFIB.
C.It will forward the packet using the LIB. D.It will forward the packet using the FIB. E.It will drop the packet immediately. Correct:D
30.When routes between MPBGP and RIP are being redistributed, what does the option metric transparent do?
A.copies the BGP MED into the RIP hop count
B.copies the BGP local preference into the RIP hop count C.copies the RIP hop count into the BGP local preference D.copies the RIP hop count into the BGP MED
E.uses the default seed metric when redistributing from MPBGP into RIP F.uses the default seed metric when redistributing from RIP into MPBGP Correct:A

“CCIP Implementing Cisco MPLS Exam (MPLS)”, also known as 642-611 exam, is a Cisco certification.
Preparing for the 642-611 exam? Searching 642-611 Test Questions, 642-611 Practice Exam, 642-611 Dumps?

With the complete collection of questions and answers, Pass4sure has assembled to take you through 102 Q&As to your 642-611 Exam preparation. In the 642-611 exam resources, you will cover every field and category in CCIP helping to ready you for your successful Cisco Certification.
Questions and Answers : 102 Q&As
Updated: April 28th , 2008
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The MPLS exam is a qualifying exam for the CCIP certification (Cisco Certified Internetwork Professional). The 642-611 MPLS exam will test materials covered under the Implementing Cisco MPLS course. The exam will certify that the successful candidate has knowledge and skills necessary to gather information from the technology basics to some of the more updated features and functions such as Traffic Engineering, Fast Reroute and any Transport over MPLS (AToM). The exam covers topics on MPLS Concepts, MPLS Label Assignment and Distribution, Frame-Mode/Cell-Mode MPLS Implementation on Cisco IOS Platforms, MPLS Virtual Private Networks Technology, MPLS VPN Implementation, Complex MPLS VPNs, and Internet Access from a MPLS VPN

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