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1. What are three benefits of an MPLS VPN? (Choose three)
   1. It provides a network-based VPN service.
   2. It provides equivalent security to Frame Relay.
   3. It eliminates the need for multiple routing protocols.
   4. It offers a more scalable solution than other VPN technologies.
   
   What are three benefits of an MPLS VPN? (Choose three)
   

   1.   ?    It provides a network-based VPN service.
   2.   ?    It provides equivalent security to Frame Relay.
   3.   ?    It eliminates the need for multiple routing protocols.
   4.   ?    It offers a more scalable solution than other VPN technologies.

2. The VPN named my_vpn is operating on interface s0/0 of a PE-router. The CE-PE routing protocol is OSPF. Why is the OSPF super-backbone needed in MPLS VPN environments?

   1.   ?    To ensure that the customer’s OSPF traffic has priority over the backbone OSPF routing updates.
   2.   ?    To ensure that the backbone internal OSPF routes are not inserted as external OSPF routes into the customer’s VPN.
   3.   ?    To ensure that the customer’s internal OSPF routes on one site are not inserted as external OSPF routes into other sites on the same VPN.
   4.   ?    To ensure that the customer’s internal OSPF routes are not inserted as external OSPF routes into the provider backbone as internal OSPF routes.

3. When running basic MPLS in conjunction with VPNs, how many labels does each packet contain?

   1.   ?    Each packet contains one label that identifies the VPN.
   2.   ?    Each packet contains at least two labels. One label identifies the path to the egress router and one that identifies the VPN.
   3.   ?    Each packet contains at least three labels. One label identifies the ingress router, one identifies the egress router and one identifies the path that will be taken.
   4.   ?    Each packet contains at least three labels. One label identifies the ingress router, one label identifies the path to the egress router, and one identifies the VPN.

4. Which IOS command displays the LC-ATM capabilities of an IOS device?

   1.   ?    show mpls atm capability
   2.   ?    show mpls atm-lc capability
   3.   ?    show tag-switching lc-atm capability
   4.   ?    show tag-switching atm-tdp capability

5. When running MPLS in the frame mode over an Ethernet, how does the receiving device identify that the frame contains MPLS information?

   1.   ?    MPLS frames are sent over a reserved session.
   2.   ?    MPLS is identified in the protocol port of the Layer 3 header.
   3.   ?    MPLS frames are sent in a special frame with a multicast address similar to CDP.
   4.   ?    The Ether Type of PID in the Layer 2 header identifies the frame as an MPLS frame.

6. 
   

   1.   ?    MPLS frames are sent over a reserved session.
   2.   ?    MPLS is identified in the protocol port of the Layer 3 header.
   3.   ?    MPLS frames are sent in a special frame with a multicast address similar to CDP.
   4.   ?    The Ether Type of PID in the Layer 2 header identifies the frame as an MPLS frame.

7. The VPN named my_vpn is operating on interface s0/0 a PE-router. The CE-PE routing protocol is RIP. The MPLS backbone IGP is OSPF. However, when you review the configuration for the PE-router, you find that BGP has been configured. What explains this configuration?

   1.   ?    VPN routes are always imported an exported using MP-BGP.
   2.   ?    This router is configured improperly. BGP is not needed in this configuration.
   3.   ?    This router is configured improperly E-BGP is the required routing protocol between PE and CE-routers.
   4.   ?    BGP should be configured on all routers supporting MPLS to ensure backward-compatibility reasons for earlier versions of IOS.

8. Which statement about Cisco Express Forwarding’s (CEF’s) default operations is true?

   1.   ?    CEF is enabled by default on all Cisco routers.
   2.   ?    CEF’s default operation are router dependent.
   3.   ?    CEF is disabled by default on all Cisco routers.
   4.   ?    CEF is enabled at a global level, but is disabled at an interface level.

9. Which two are the proper syntax for enabling MPLS on an interface? (Choose two)

   1.   ?    router(config-if)# mpls ip
   2.   ?    router(config-if)# mpls enable
   3.   ?    router(config-if)# tag-switching
   4.   ?    router(config-if)# tag-switching ip

10. How many routing table PE have

    1.   ?    A PE has one routing table for each VRF
    2.   ?    PE has one global routing table for all VRFs
    3.   ?    A PE has a global routing table and additional routing table for each VRF
    4.   ?    A PE has a CEF global routing table and additional routing table for each VRF