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Home Juniper JN0-664

Juniper JN0-664 Exam Practice Questions (P. 2)

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Question #6
Click the Exhibit button.

Referring to the exhibit, which two statements are true? (Choose two.)
  1. A
    The devices advertising this route into EVPN are 10.0.2.12 and 10.0.2.22.
  2. B
    This route is learned through EBGP.
  3. C
    The device advertising this route into EVPN is 192.168.101.5.
  4. D
    This is an EVPN Type-2 route.

Correct Answer:
CD

Question #7
Click the Exhibit button.

You are running a service provider network and must transport a customer's IPv6 traffic across your IPv4-based MPLS network using BGP. You have already configured mpls ipv6-tunneling on your PE routers.
Which two statements are correct about the BGP configuration in this scenario? (Choose two.)
  1. A
    You must configure family inet6 labeled-unicast between PE routers.
  2. B
    You must configure family inet6 add-path between PE and CE routers.
  3. C
    You must configure family inet6 unicast between PE and CE routers.
  4. D
    You must configure family inet6 unicast between PE routers.

Correct Answer:
AC

Question #8
When using 0SPFv3 for an IPv4 environment, which statement is correct?
  1. A
    OSPFv3 only supports IPv4.
  2. B
    OSPFv3 is not backward compatible with IPv4.
  3. C
    OSPFv3 supports both IPv6 and IPv4, but not in the same routing instance.
  4. D
    OSPFv3 supports IPv4 only on interfaces with family inet6 defined.

Correct Answer:
C
chatbot-img GPT-4o - Answer
OSPfv3 was designed primarily to support IPv6 routing, but it can also cater to IPv4. However, it's crucial to note that OSPFv3 cannot handle both IPv4 and IPv6 in the same routing instance. Each protocol requires a separate OSPFv3 instance. This differentiation ensures a clear operational environment catered to the specific IP versions, despite the additional setup complexity. Remembering this separation can help avoid configuration errors and ensure the efficient deployment of OSPFv3 in mixed IP environments.

Question #9
You are a network architect for a service provider and want to offer Layer 2 services to your customers. You want to use EVPN for Layer 2 services in your existing MPLS network.
Which two statements are correct in this scenario? (Choose two.)
  1. A
    Segment routing must be configured on all PE routers.
  2. B
    EVPN uses Type 2 routes to advertise MAC address and IP address pairs learned using ARP snooping.
  3. C
    EVPN uses Type 3 routes to join a multicast tree to flood traffic.
  4. D
    VXLAN must be configured on all PE routers.

Correct Answer:
BC
chatbot-img GPT-4o - Answer
B and C are the correct choices because EVPN leverages Type 2 routes for advertising MAC and IP address pairs, which are typically learned through mechanisms like ARP snooping. This is a key feature as it enables the efficient handling of host information across the network. Additionally, Type 3 routes are utilized in EVPN for the purpose of joining multicast trees. This is crucial for ensuring that traffic flooding for unknown destinations is managed efficiently, effectively supporting broadcast, unknown unicast, and multicast (BUM) traffic within a Layer 2 service across an MPLS network.

Question #10
You are configuring a Layer 3 VPN between two sites. You are configuring the vrf-target target: 65100:100 statement in your routing instance.
In this scenario, which two statements describe the vrf-target configuration? (Choose two.)
  1. A
    This value is used to identify BGP routes learned from the remote PE device.
  2. B
    This value is used to add a target community to BGP routes advertised to the local CE device.
  3. C
    This value is used to add a target community to BGP routes advertised to the remote PE device.
  4. D
    This value is used to identify BGP routes learned from the local CE device.

Correct Answer:
AC
chatbot-img GPT-4o - Answer
The vrf-target configuration in a Layer 3 VPN serves crucial roles; primarily, it helps identify BGP routes learned from a remote Provider Edge (PE) device and tags BGP routes advertised to a remote PE with a specific community tag. This mechanism enables efficient route filtering and ensures that only routes belonging to the same VPN are exchanged among pertinent PEs, promoting enhanced network segregation and security.

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