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
Link : http://www.killtest.co.kr/CCIP/642-611.asp