300-410 practice test

1. Question 1 · 1

   Refer to the exhibit. Users in the branch network of 2001:db8:0:4::/64 report that they cannot access the Internet. Which command is issued in IPv6 router EIGRP 100 configuration mode to solve this issue?

   Choose one answer.

   

   • Issue the eigrp stub command on R1.
   • Issue the no eigrp stub command on R1.
   • Issue the eigrp stub command on R2.
   • Issue the no eigrp stub command on R2.

2. Question 2 · 1

   Refer to the exhibits. Which configuration allows spoke-to-spoke communication using loopback as a tunnel source?

   Choose one answer.

   

   

   • Configure crypto isakmp key cisco address 0.0.0.0 on the hub
   • Configure crypto isakmp key cisco address 200.1.0.0 255.255.0.0 on the hub
   • Configure crypto isakmp key cisco address 200.1.0.0 255.255.0.0 on the spokes
   • Configure crypto isakmp key cisco address 0.0.0.0 on the spokes

3. Question 3 · 1

   How does an MPLS Layer 3 VPN function?

   Choose one answer.

   • multiple customer sites interconnect through service provider network to create secure tunnels between customer edge devices
   • multiple customer sites interconnect through a service provider network using customer edge to provider edge connectivity
   • set of sites interconnect privately over the Internet for security
   • set of sites use multiprotocol BGP at the customer site for aggregation

4. Question 4 · 1

   DRAG DROP - Drag and drop the LDP features from the left onto the descriptions on the right. Select and Place:

   Match each destination with an option.

   

   provides ways of improving load balancing by eliminating the need for DPI at transit LSRs

   • • implicit null label
   • • explicit null label
   • • inbound label binding filtering
   • • entropy label

   LSR receives an MPLS header with the label set to 3

   • • implicit null label
   • • explicit null label
   • • inbound label binding filtering
   • • entropy label

   packet is encapsulated in MPLS with the option of copying the IP precedence to EXP bits

   • • implicit null label
   • • explicit null label
   • • inbound label binding filtering
   • • entropy label

   controls the amount of memory used to store LDP label bindings advertised by other devices

   • • implicit null label
   • • explicit null label
   • • inbound label binding filtering
   • • entropy label

5. Question 5 · 1

   Which two protocols work in the control plane of P routers across the MPLS cloud? (Choose two.)

   Choose all answers that apply.

   • ECMP
   • LDP
   • RSVP
   • MPLS OAM
   • LSP

6. Question 6 · 1

   Refer to the exhibit. An engineer has configured DMVPN on a spoke router. What is the WAN IP address of another spoke router within the DMVPN network?

   Choose one answer.

   

   • 172.18.46.2
   • 172.18.16.2
   • 192.168.1.1
   • 192.168.1.4

7. Question 7 · 1

   What are two functions of LDP? (Choose two.)

   Choose all answers that apply.

   • It advertises labels per Forwarding Equivalence Class.
   • It uses Forwarding Equivalence Class.
   • It is defined in RFC 3038 and 3039.
   • It requires MPLS Traffic Engineering.
   • It must use Resource Reservation Protocol.

8. Question 8 · 1

   DRAG DROP - Drag and drop the operations from the left onto the locations where the operations are performed on the right. Select and Place:

   Match each destination with an option.

   

   Label Switch Router (slot 1)

   • • assigns labels to unlabeled packets
   • • performs penultimate hop popping
   • • handles traffic between multiple VPNs
   • • reads the labels and forwards the packet based on the labels

   Label Switch Router (slot 2)

   • • assigns labels to unlabeled packets
   • • performs penultimate hop popping
   • • handles traffic between multiple VPNs
   • • reads the labels and forwards the packet based on the labels

   Label Edge Router (slot 1)

   • • assigns labels to unlabeled packets
   • • performs penultimate hop popping
   • • handles traffic between multiple VPNs
   • • reads the labels and forwards the packet based on the labels

   Label Edge Router (slot 2)

   • • assigns labels to unlabeled packets
   • • performs penultimate hop popping
   • • handles traffic between multiple VPNs
   • • reads the labels and forwards the packet based on the labels

9. Question 9 · 1

   Which protocol does MPLS use to support traffic engineering?

   Choose one answer.

   • TDP
   • RSVP
   • LDP
   • BGP

10. Question 10 · 1

    An engineer configured a company's multiple area OSPF Head Office router and Site A Cisco routers with VRF lite. Each site router is connected to a PE router of an MPLS backbone: Head Office & Site A - ip cef ip vrf abc rd 101:101 ! interface FastEthernet0/0 ip vrf forwarding abc ip address 172.16.16.X 255.255.255.252 ! router ospf 1 vrf abc log-adjacency-changes network 172.16.16.0 0.0.0.255 area 1 After finishing both site router configurations, none of the LSA 3, 4, 5, and 7 are installed at Site A router. Which configuration resolves this issue?

    Choose one answer.

    • configure capability vrf-lite on Site A and its connected PE router under router ospf 1 vrf abc
    • configure capability vrf-lite on both PE routers connected to Head Office and Site A routers under router ospf 1 vrf abc
    • configure capability vrf-lite on Head Office and its connected PE router under router ospf 1 abc
    • configure capability vrf-lite on Head Office and Site A routers under router ospf 1 vrf abc

11. Question 11 · 1

    Refer to the exhibit. The Los Angeles and New York routers are receiving routers from Chicago but not from each other. Which configuration fixes the issue?

    Choose one answer.

    

    

    • interface Tunnel1 no ip split-horizon eigrp 111
    • interface Tunnel1 ip next-hop-self eigrp 111
    • interface Tunnel1 tunnel mode ipsec ipv4
    • interface Tunnel1 tunnel protection ipsec profile IPSec-PROFILE

12. Question 12 · 1

    Refer to the exhibit. R2 is a route reflector, and R1 and R3 are route reflector clients. The route reflector learns the route to 172.16.25.0/24 from R1, but it does not advertise to R3. What is the reason the route is not advertised?

    Choose one answer.

    

    • R2 does not have a route to the next hop, so R2 does not advertise the prefix to other clients.
    • Route reflector setup requires full IBGP mesh between the routers.
    • In route reflector setup, only classful prefixes are advertised to other clients.
    • In route reflector setups, prefixes are not advertised from one client to another.

13. Question 13 · 1

    DRAG DROP - Drag and drop the MPLS VPN device types from the left onto the definitions on the right. Select and Place:

    Match each destination with an option.

    

    device in the core of the provider network that switches MPLS packets

    • • Customer (C) device
    • • CE device
    • • PE device
    • • Provider (P) device

    device that attaches and detaches the VPN labels to the packets in the provider network

    • • Customer (C) device
    • • CE device
    • • PE device
    • • Provider (P) device

    device in the enterprise network that connects to other customer devices

    • • Customer (C) device
    • • CE device
    • • PE device
    • • Provider (P) device

    device at the edge of the enterprise network that connects to the SP network

    • • Customer (C) device
    • • CE device
    • • PE device
    • • Provider (P) device

14. Question 14 · 1

    What does the PE router convert the IPv4 prefix to within an MPLS VPN?

    Choose one answer.

    • eBGP path association between the PE and CE sessions
    • prefix that combines the ASN, PE router-id, and IP prefix
    • 48-bit route combining the IP and PE router-id
    • VPN-IPv4 prefix combined with the 64-bit route distinguisher

15. Question 15 · 1

    Refer to the exhibit. Which interface configuration must be configured on the HUB router to enable MVPN with mGRE mode?

    Choose one answer.

    

    • interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.1.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 172.17.0.1 ip nhrp map 10.0.0.11 172.17.0.2 ip nhrp map 10.0.0.12 172.17.0.3 tunnel mode gre
    • interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 10.0.0.1 tunnel mode gre multipoint
    • interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp network-id 1 tunnel source 172.17.0.1 tunnel mode gre multipoint
    • interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 10.0.0.1 tunnel destination 172.17.0.2 tunnel mode gre multipoint

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