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Exam Code: JN0-650

Exam Name: Enterprise Routing and Switching, Professional (JNCIP-ENT)

Certification Provider: Juniper

Corresponding Certification: JNCIP-ENT

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Juniper JN0-650 Practice Test 80

Question 790

A Junos network engineer takes this step: Configure a supported shared anycast VTEP address and multihoming routing design. Which outcome most directly follows?

  1. The attached segment can retain forwarding through another multihoming peer if one leaf fails.
  2. Encapsulated VXLAN traffic can traverse the routed fabric to the remote endpoint.
  3. Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic.
  4. Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.

Explanation

Correct Answer

C:

This is the direct result of the Anycast VTEP next hop decision: Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic.

Incorrect Answers

A:

This outcome is associated with EVPN ESI LAG redundancy (Use a consistent ESI-based LAG multihoming configuration on the two leaf switches.), not the specified action.

B:

This outcome is associated with VTEP underlay reachability (Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses.), not the specified action.

D:

This outcome is associated with EVPN VXLAN BUM replication (Use an approved BUM replication design informed by EVPN membership signaling.), not the specified action.

Question 791

Two EVPN multihoming peers must appear as one remote tunnel destination while still using resilient underlay forwarding. A colleague instead suggests: Use an approved BUM replication design informed by EVPN membership signaling. Which corrective approach most directly addresses the original issue?

  1. Use a consistent ESI-based LAG multihoming configuration on the two leaf switches.
  2. Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses.
  3. Use an approved BUM replication design informed by EVPN membership signaling.
  4. Configure a supported shared anycast VTEP address and multihoming routing design.

Explanation

Correct Answer

D:

This corrective choice addresses Anycast VTEP next hop. Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic.

Incorrect Answers

A:

That alternative applies to EVPN ESI LAG redundancy instead. The attached segment can retain forwarding through another multihoming peer if one leaf fails.

B:

That alternative applies to VTEP underlay reachability instead. Encapsulated VXLAN traffic can traverse the routed fabric to the remote endpoint.

C:

That alternative applies to EVPN VXLAN BUM replication instead. Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.

Question 792

An enterprise network designer recommends: Configure a supported shared anycast VTEP address and multihoming routing design. Which situation most clearly calls for this action?

  1. Two EVPN multihoming peers must appear as one remote tunnel destination while still using resilient underlay forwarding.
  2. A server is attached by an Ethernet segment to two EVPN leaf switches and requires supported all-active multihomed access.
  3. A VXLAN tenant sends broadcast ARP across multiple remote VTEPs but only one known-unicast host route is installed.
  4. Two VTEPs exchange EVPN routes but fail to carry VXLAN frames because the remote tunnel endpoint IP is unreachable.

Explanation

Correct Answer

A:

This case requires the Anycast VTEP next hop action. Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic.

Incorrect Answers

B:

This other case would be better matched to Use a consistent ESI-based LAG multihoming configuration on the two leaf switches. The attached segment can retain forwarding through another multihoming peer if one leaf fails.

C:

This other case would be better matched to Use an approved BUM replication design informed by EVPN membership signaling. Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.

D:

This other case would be better matched to Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses. Encapsulated VXLAN traffic can traverse the routed fabric to the remote endpoint.

Question 793

A multihomed segment risks duplicate delivery of flooded broadcast frames from both provider edge routers. Which Junos networking action or protocol decision best addresses this requirement?

  1. Use EVPN designated-forwarder election for the relevant Ethernet segment and service.
  2. Encapsulate the tenant Ethernet frame in VXLAN over UDP/IP at the source VTEP.
  3. Enable a supported all-active EVPN multihoming service with appropriate link aggregation.
  4. Map the tenant's bridge domain to a consistent VXLAN network identifier on both VTEPs.

Explanation

Correct Answer

A:

This action addresses EVPN designated forwarder. BUM traffic toward the segment can be controlled so redundant peers avoid duplicate delivery.

Incorrect Answers

B:

That action targets VXLAN transport encapsulation: The routed IP fabric can transport tenant Layer 2 traffic between VTEPs. It does not directly resolve the stated EVPN designated forwarder requirement.

C:

That action targets All-active EVPN multihoming: Both active attachment links can participate in forwarding under the supported design. It does not directly resolve the stated EVPN designated forwarder requirement.

D:

That action targets VXLAN VNI mapping: The Layer 2 service can be carried through VXLAN tunnels over a routed IP underlay. It does not directly resolve the stated EVPN designated forwarder requirement.

Question 794

A Junos network engineer takes this step: Use EVPN designated-forwarder election for the relevant Ethernet segment and service. Which outcome most directly follows?

  1. Both active attachment links can participate in forwarding under the supported design.
  2. BUM traffic toward the segment can be controlled so redundant peers avoid duplicate delivery.
  3. The Layer 2 service can be carried through VXLAN tunnels over a routed IP underlay.
  4. The routed IP fabric can transport tenant Layer 2 traffic between VTEPs.

Explanation

Correct Answer

B:

This is the direct result of the EVPN designated forwarder decision: BUM traffic toward the segment can be controlled so redundant peers avoid duplicate delivery.

Incorrect Answers

A:

This outcome is associated with All-active EVPN multihoming (Enable a supported all-active EVPN multihoming service with appropriate link aggregation.), not the specified action.

C:

This outcome is associated with VXLAN VNI mapping (Map the tenant's bridge domain to a consistent VXLAN network identifier on both VTEPs.), not the specified action.

D:

This outcome is associated with VXLAN transport encapsulation (Encapsulate the tenant Ethernet frame in VXLAN over UDP/IP at the source VTEP.), not the specified action.

Question 795

A multihomed segment risks duplicate delivery of flooded broadcast frames from both provider edge routers. A colleague instead suggests: Map the tenant's bridge domain to a consistent VXLAN network identifier on both VTEPs. Which corrective approach most directly addresses the original issue?

  1. Encapsulate the tenant Ethernet frame in VXLAN over UDP/IP at the source VTEP.
  2. Map the tenant's bridge domain to a consistent VXLAN network identifier on both VTEPs.
  3. Use EVPN designated-forwarder election for the relevant Ethernet segment and service.
  4. Enable a supported all-active EVPN multihoming service with appropriate link aggregation.

Explanation

Correct Answer

C:

This corrective choice addresses EVPN designated forwarder. BUM traffic toward the segment can be controlled so redundant peers avoid duplicate delivery.

Incorrect Answers

A:

That alternative applies to VXLAN transport encapsulation instead. The routed IP fabric can transport tenant Layer 2 traffic between VTEPs.

B:

That alternative applies to VXLAN VNI mapping instead. The Layer 2 service can be carried through VXLAN tunnels over a routed IP underlay.

D:

That alternative applies to All-active EVPN multihoming instead. Both active attachment links can participate in forwarding under the supported design.

Question 796

An enterprise network designer recommends: Use EVPN designated-forwarder election for the relevant Ethernet segment and service. Which situation most clearly calls for this action?

  1. A dual-homed host should use both available EVPN PE links for normal forwarding rather than reserve one solely for standby.
  2. A virtual server generates an Ethernet frame that must cross a Layer 3 spine-leaf underlay to reach another leaf.
  3. A tenant's Layer 2 broadcast domain must extend between two IP-connected data centers without extending its original physical VLAN trunks.
  4. A multihomed segment risks duplicate delivery of flooded broadcast frames from both provider edge routers.

Explanation

Correct Answer

D:

This case requires the EVPN designated forwarder action. BUM traffic toward the segment can be controlled so redundant peers avoid duplicate delivery.

Incorrect Answers

A:

This other case would be better matched to Enable a supported all-active EVPN multihoming service with appropriate link aggregation. Both active attachment links can participate in forwarding under the supported design.

B:

This other case would be better matched to Encapsulate the tenant Ethernet frame in VXLAN over UDP/IP at the source VTEP. The routed IP fabric can transport tenant Layer 2 traffic between VTEPs.

C:

This other case would be better matched to Map the tenant's bridge domain to a consistent VXLAN network identifier on both VTEPs. The Layer 2 service can be carried through VXLAN tunnels over a routed IP underlay.

Question 797

A VXLAN tenant sends broadcast ARP across multiple remote VTEPs but only one known-unicast host route is installed. Which Junos networking action or protocol decision best addresses this requirement?

  1. Use an approved BUM replication design informed by EVPN membership signaling.
  2. Use a consistent ESI-based LAG multihoming configuration on the two leaf switches.
  3. Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses.
  4. Configure a supported shared anycast VTEP address and multihoming routing design.

Explanation

Correct Answer

A:

This action addresses EVPN VXLAN BUM replication. Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.

Incorrect Answers

B:

That action targets EVPN ESI LAG redundancy: The attached segment can retain forwarding through another multihoming peer if one leaf fails. It does not directly resolve the stated EVPN VXLAN BUM replication requirement.

C:

That action targets VTEP underlay reachability: Encapsulated VXLAN traffic can traverse the routed fabric to the remote endpoint. It does not directly resolve the stated EVPN VXLAN BUM replication requirement.

D:

That action targets Anycast VTEP next hop: Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic. It does not directly resolve the stated EVPN VXLAN BUM replication requirement.

Question 798

A Junos network engineer takes this step: Use an approved BUM replication design informed by EVPN membership signaling. Which outcome most directly follows?

  1. Encapsulated VXLAN traffic can traverse the routed fabric to the remote endpoint.
  2. Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.
  3. The attached segment can retain forwarding through another multihoming peer if one leaf fails.
  4. Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic.

Explanation

Correct Answer

B:

This is the direct result of the EVPN VXLAN BUM replication decision: Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.

Incorrect Answers

A:

This outcome is associated with VTEP underlay reachability (Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses.), not the specified action.

C:

This outcome is associated with EVPN ESI LAG redundancy (Use a consistent ESI-based LAG multihoming configuration on the two leaf switches.), not the specified action.

D:

This outcome is associated with Anycast VTEP next hop (Configure a supported shared anycast VTEP address and multihoming routing design.), not the specified action.

Question 799

A VXLAN tenant sends broadcast ARP across multiple remote VTEPs but only one known-unicast host route is installed. A colleague instead suggests: Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses. Which corrective approach most directly addresses the original issue?

  1. Configure a supported shared anycast VTEP address and multihoming routing design.
  2. Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses.
  3. Use an approved BUM replication design informed by EVPN membership signaling.
  4. Use a consistent ESI-based LAG multihoming configuration on the two leaf switches.

Explanation

Correct Answer

C:

This corrective choice addresses EVPN VXLAN BUM replication. Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.

Incorrect Answers

A:

That alternative applies to Anycast VTEP next hop instead. Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic.

B:

That alternative applies to VTEP underlay reachability instead. Encapsulated VXLAN traffic can traverse the routed fabric to the remote endpoint.

D:

That alternative applies to EVPN ESI LAG redundancy instead. The attached segment can retain forwarding through another multihoming peer if one leaf fails.

Question 800

An enterprise network designer recommends: Use an approved BUM replication design informed by EVPN membership signaling. Which situation most clearly calls for this action?

  1. Two EVPN multihoming peers must appear as one remote tunnel destination while still using resilient underlay forwarding.
  2. A server is attached by an Ethernet segment to two EVPN leaf switches and requires supported all-active multihomed access.
  3. Two VTEPs exchange EVPN routes but fail to carry VXLAN frames because the remote tunnel endpoint IP is unreachable.
  4. A VXLAN tenant sends broadcast ARP across multiple remote VTEPs but only one known-unicast host route is installed.

Explanation

Correct Answer

D:

This case requires the EVPN VXLAN BUM replication action. Broadcast and unknown-unicast traffic can reach eligible VTEPs even without a specific learned unicast destination.

Incorrect Answers

A:

This other case would be better matched to Configure a supported shared anycast VTEP address and multihoming routing design. Remote VTEPs can use one logical tunnel next hop while underlay ECMP distributes traffic.

B:

This other case would be better matched to Use a consistent ESI-based LAG multihoming configuration on the two leaf switches. The attached segment can retain forwarding through another multihoming peer if one leaf fails.

C:

This other case would be better matched to Restore IP underlay routing connectivity between the VTEP tunnel endpoint addresses. Encapsulated VXLAN traffic can traverse the routed fabric to the remote endpoint.

Enterprise Routing and Switching, Professional (JNCIP-ENT) (JN0-650) Practice Tests