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300-515 Real Exam Questions

Implementing Cisco Service Provider VPN Services (SVPI)

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Question 1 Single choice

Refer to the exhibit.

Which statement about this output is true?

  1. A

    The router IP 192.168.1.2 sent an implicit null, and the output is from the penultimate LSR.

  2. B

    The adjacent router is the egress LSR and has mpls ldp explicit-null configured.

  3. C

    The adjacent LSR router configured mpls label range 0.

  4. D

    The zero in the second column is the normal behavior of an egress router LSR.

Show answer and explanation

Correct answer: B

Question 2 Single choice

An ISP provides a major client MPLS VPN for managed services. The MPLS engineering team needs to use the advanced VPN feature of selective VRF import so that only specific prefixes are present in the required VPNs.

Which aspect of this feature must the team consider?

  1. A

    A route must pass the import route map first and then the route target import filter.

  2. B

    The routers that are imported in the VRF can be BGP and IGP routes, so other match conditions in the route map, besides communities, can be used.

  3. C

    The import-map command is applied under the PE interface that connects to the CE router.

  4. D

    A route is imported into the VRF only when at least one RT that is attached to the route matches one RT that is configured in the VRF and the route is permitted by the import route map.

Show answer and explanation

Correct answer: D

Explanation

References:
https://www.ccexpert.us/mpls/configuring-selective-vrf-import.html

Question 3 Single choice

How does Layer 3 VPN traffic traverse an ISP network?

  1. A

    Devices on the network use MPLS labels to share VPN routes between P routers in the network.

  2. B

    Devices on the network use LSAs to share routes between P routers in the network.

  3. C

    Devices on the network use MPLS labels to move VPN traffic through the network.

  4. D

    Devices on the network use GRE tunnels to move traffic between VRFs.

Show answer and explanation

Correct answer: C

Question 4 Single choice

Refer to the exhibit. The CE router has established a BGP peering with the PE router, and the CE will use the core infrastructure of the PE as a backbone carrier to support CSC.

Which additional task can you perform to complete the configuration?

  1. A

    Configure static routing on the CE router.

  2. B

    Configure the address-family ipv4 labeled-unicast command under the neighbor configuration of the CE router for the PE.

  3. C

    Change the rd value to 65001:65001 under the VRF section of the PE router.

  4. D

    Configure OSPF on the PE router.

Show answer and explanation

Correct answer: D

Question 5 Single choice

Which kind of traffic is supported in an MVPN Extranet?

  1. A

    PIM dense mode with Reverse Path Forwarding

  2. B

    PIM dense mode

  3. C

    PIM sparse mode

  4. D

    Bidirectional PIM

Show answer and explanation

Correct answer: C

Explanation

References:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipmulti_mvpn/configuration/xe-16/imc-mvpn-xe-16-book/imc-mc-vpn-extranet.html

Question 6 Single choice

What is the primary function of a VRF on a router?

  1. A

    It enables the router to support multiple separate routing tables, which allows the device to handle overlapping IP addresses.

  2. B

    It enables a router to run BGP and a distance vector routing protocol at the same time, which allows it to serve as a VPN endpoint between remote sites.

  3. C

    It enables a router to configure VLANs locally, which provides segregation between networks.

  4. D

    It enables the router to provide faster switching through the network by using labels to identify the input and output interfaces for neighbor routers.

Show answer and explanation

Correct answer: A

Question 7 Single choice

Which is the primary function of a MPLS L3 VPN route target?

  1. A

    It imports and exports identified routes into selected VRFs.

  2. B

    It uniquely identifies NLRIs that have the same numeric value.

  3. C

    It imports the external routes it identifies into VRFs that support Internet traffic

  4. D

    It supports QoS by classifying traffic by file type when it applies MPLS EXP bits to each packet.

Show answer and explanation

Correct answer: A

Question 8 Single choice

While implementing Layer 3 MPLS VPN, which feature should an engineer use at the PEs to transform the customer IPv4 prefixes into a unique 96-bit prefix?

  1. A

    RT

  2. B

    VC ID

  3. C

    RD

  4. D

    PW ID

Show answer and explanation

Correct answer: C

Question 9 Single choice

An engineer is troubleshooting an EoMPLS circuit on a Cisco IOS XR router interface that removes a VLAN from the distribution layer.

Which configuration should the engineer apply in order to accomplish the task?

  1. A

    interface GigabitEthernet 0/10.l2transport
    encapsulation dot1q 10
    rewrite ingress tag pop 1 symmetric
    l2vpn
    xconnect group 103588
    p2p 103588
    interface GigabitEthernet 0/10.10
    neighbor ipv4 10.10.10.2 pw-id 103588

  2. B

    interface GigabitEthernet 0/10.10
    encapsulation dot1q 10
    rewrite ingress tag pop 1 symmetric
    l2vpn
    xconnect group 103588
    p2p 103588
    interface GigabitEthernet 0/10.10
    neighbor ipv4 10.10.10.2 pw-id 103588

  3. C

    interface GigabitEthernet 0/10.10 l2transport
    encapsulation dot1q 10

    l2vpn
    xconnect group 103588
    p2p 103588
    interface GigabitEthernet 2/10.10
    neighbor ipv4 10.10.10.2 pw-id 103588

  4. D

    interface GigabitEthernet 0/10.10 l2transport
    encapsulation dot1q 10
    rewrite ingress tag translate 1-to-1 dot1ad 10 symmetric l2vpn xconnect group 103588 p2p 103588 interface GigabitEthernet 0/10.10
    neighbor ipv4 10.10.10.2 pw-id 103588

Show answer and explanation

Correct answer: C

Question 10 Single choice

An engineer is investigating an MPLS LDP issue.

Which command should an engineer use on a Cisco IOS XE device to display the contents of the LFIB?

  1. A

    show mpls forwarding-table

  2. B

    show mpls ldp neighbors

  3. C

    show mpls ldp labels

  4. D

    show mpls ldp bindings

Show answer and explanation

Correct answer: A

Explanation

References:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mpls/command/mp-cr-book/mp-s2.html