MPLS VPN Overview

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Author:
piwi2024
ID:
172939
Filename:
MPLS VPN Overview
Updated:
2012-09-24 01:14:42
Tags:
MPLS VPN overview L3vpn l2vpn bgp ip networking
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Description:
MPLS VPN Overview, including L3VPN and L2VPN
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  1. Sub-optimal routing can be a problem with VPN Overlay models. So when a link goes down on a leased link what will the CE try to do?

    Re-route the traffic using as many as of the same backbone routers and links that made up the leased line.
    Re-route the traffic through a completely different site.
    Stop all traffic forwarding.
    Re-route the traffic through a completely different site.
  2. Which of the following answer is the "P" in VPN

    A Periodic
    B Public
    C Private
    C Private
    (this multiple choice question has been scrambled)
  3. Which two of the following are underlying protocols for L3VPN's?

    A LDP
    B IP
    C BGP
    D ATM
    E MPLS
    • B IP
    • E MPLS
  4. Which of the following would you associate with L2VPN? (Choose 2)

    t-LDP
    VPVS
    VPLS
    BGP
    • t-LDP
    • VPLS
  5. Which protocol is used to distribute the customer prefixes across the backbone in a L3VPN model?

    IGP
    EGP
    LDP
    BGP
    OSPF
    BGP
  6. L3VPN uses which type of VPN model?

    Peer
    Overlay
    Overstay
    Peer
  7. Customers using the same L3VPN service with the same service provider can use over-lapping IP addresses

    TRUE
    FALSE
    TRUE
  8. Which of the following are requirements of a VPN service? (Choose 3)

    Connectivity to other Organizations VPN's
    Privacy
    Private Hardware
    Scalability
    Easy to use
    • Privacy
    • Scalability
    • Easy to use
  9. Match the VPN type with the correct statement:

    Ovelay model      SP takes responsibility for connectivity
    Peer model          Customer takes responsibility for routing
    MPLS                 Uses labels to forward packets
    • Ovelay model -->  Customer takes responsibility for routing     
    • Peer model     -->  SP takes responsibility for connectivity
    • MPLS            -->  Uses labels to forward packets

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