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Explain What is a benefit of CEF switching?
A.CEF supports IP source prefix-based 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.

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C. CEF is less CPU intensive than fast switching is.
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Top CCIP Certification Questions

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Explain Which three statements about MPLS VPNs are true? (Choose three.)
A. PE routers do not participate in customer routing.
B. MPLS VPN is similar to using the peer-to-peer dedicated PE router approach.
C. Customer can use overlapping addresses.
D. Each customer is assigned an independent routing table (virtual routing and
forwarding table VRF).
E. The P Routers routing table contains both the global IP routes and the customer
routes.
F. CE routers connect directly to the service providers P routers.

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Which three components comprise a Cisco NAC Appliance solution? (Choose three.)
A. a NAC-enabled Cisco router
B. a Linux server for in-band or out-of-band network admission control
C. a Linux server for centralized management of network admission servers
D. a Cisco router to provide VPN services
E. a read-only client operating on an endpoint device
F. a NAC-enabled Cisco switch

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Explain 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.

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Explain Which three statements are correct regarding Layer 2 overlay VPNs and peer-to-peer VPNs?

A.Peer-to-peer VPNs require the establishment of virtual circuits to connect the different customer sites
together.
B.Peer-to-peer 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 peer-to-peer 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 switched-WAN 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 Providers Provider Edge (PE) router.

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Explain What is a benefit of CEF switching?
A.CEF supports IP source prefix-based 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.

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