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Exam Code: JN0-650

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

Certification Provider: Juniper

Corresponding Certification: JNCIP-ENT

Questions & Answers

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Juniper JN0-650 Practice Test 75

Question 740

An enterprise network designer recommends: Use Ethernet auto-discovery EVPN Type 1 route signaling. Which situation most clearly calls for this action?

  1. An operator tries to find remote tenant MAC addresses solely by examining locally learned Ethernet frames.
  2. A VTEP must import only EVPN routes belonging to its authorized tenant rather than every EVPN route in the fabric.
  3. A new VXLAN bridge-domain participant needs to inform other VTEPs that it belongs to the broadcast and unknown-unicast replication set.
  4. An EVPN multihomed Ethernet segment needs signaling to advertise association with reachable provider edge routers.

Explanation

Correct Answer

D:

This case requires the EVPN Type 1 Ethernet discovery action. Remote EVPN peers can learn the Ethernet segment's auto-discovery reachability.

Incorrect Answers

A:

This other case would be better matched to Inspect EVPN MAC/IP routes and associated BGP signaling as well as the bridge MAC table. The operator can distinguish remotely signaled EVPN reachability from local MAC learning.

B:

This other case would be better matched to Use matching BGP route-target import and export policies for the tenant service. Only EVPN routes carrying permitted targets are imported into the intended service instance.

C:

This other case would be better matched to Use EVPN Type 3 inclusive multicast Ethernet tag route signaling. Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.

Question 741

An EVPN control plane must distribute the location of a learned tenant MAC address to remote VTEPs. Which Junos networking action or protocol decision best addresses this requirement?

  1. Configure the same supported Ethernet segment identifier for the intended multihoming pair.
  2. Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint.
  3. Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint.
  4. Assign appropriate route distinguishers to uniquely identify EVPN routes.

Explanation

Correct Answer

B:

This action addresses EVPN Type 2 MAC IP route. Remote peers can learn host reachability without relying solely on data-plane flooding.

Incorrect Answers

A:

That action targets EVPN ESI identification: EVPN peers can recognize the dual-connected links as one Ethernet segment. It does not directly resolve the stated EVPN Type 2 MAC IP route requirement.

C:

That action targets EVPN MAC mobility: Remote peers can update forwarding toward the new MAC location. It does not directly resolve the stated EVPN Type 2 MAC IP route requirement.

D:

That action targets EVPN BGP route distinguisher: Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane. It does not directly resolve the stated EVPN Type 2 MAC IP route requirement.

Question 742

A Junos network engineer takes this step: Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint. Which outcome most directly follows?

  1. Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane.
  2. Remote peers can update forwarding toward the new MAC location.
  3. Remote peers can learn host reachability without relying solely on data-plane flooding.
  4. EVPN peers can recognize the dual-connected links as one Ethernet segment.

Explanation

Correct Answer

C:

This is the direct result of the EVPN Type 2 MAC IP route decision: Remote peers can learn host reachability without relying solely on data-plane flooding.

Incorrect Answers

A:

This outcome is associated with EVPN BGP route distinguisher (Assign appropriate route distinguishers to uniquely identify EVPN routes.), not the specified action.

B:

This outcome is associated with EVPN MAC mobility (Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint.), not the specified action.

D:

This outcome is associated with EVPN ESI identification (Configure the same supported Ethernet segment identifier for the intended multihoming pair.), not the specified action.

Question 743

An EVPN control plane must distribute the location of a learned tenant MAC address to remote VTEPs. A colleague instead suggests: Assign appropriate route distinguishers to uniquely identify EVPN routes. Which corrective approach most directly addresses the original issue?

  1. Assign appropriate route distinguishers to uniquely identify EVPN routes.
  2. Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint.
  3. Configure the same supported Ethernet segment identifier for the intended multihoming pair.
  4. Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint.

Explanation

Correct Answer

D:

This corrective choice addresses EVPN Type 2 MAC IP route. Remote peers can learn host reachability without relying solely on data-plane flooding.

Incorrect Answers

A:

That alternative applies to EVPN BGP route distinguisher instead. Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane.

B:

That alternative applies to EVPN MAC mobility instead. Remote peers can update forwarding toward the new MAC location.

C:

That alternative applies to EVPN ESI identification instead. EVPN peers can recognize the dual-connected links as one Ethernet segment.

Question 744

An enterprise network designer recommends: Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint. Which situation most clearly calls for this action?

  1. An EVPN control plane must distribute the location of a learned tenant MAC address to remote VTEPs.
  2. Two tenants advertise identical MAC and IP information through overlapping EVPN address spaces and need distinct BGP route identities.
  3. A customer Ethernet segment is dual-attached to two EVPN provider edge switches and the control plane must recognize their shared segment identity.
  4. A virtual machine moves between VTEPs while retaining its MAC address and traffic must follow the new attachment point.

Explanation

Correct Answer

A:

This case requires the EVPN Type 2 MAC IP route action. Remote peers can learn host reachability without relying solely on data-plane flooding.

Incorrect Answers

B:

This other case would be better matched to Assign appropriate route distinguishers to uniquely identify EVPN routes. Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane.

C:

This other case would be better matched to Configure the same supported Ethernet segment identifier for the intended multihoming pair. EVPN peers can recognize the dual-connected links as one Ethernet segment.

D:

This other case would be better matched to Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint. Remote peers can update forwarding toward the new MAC location.

Question 745

A new VXLAN bridge-domain participant needs to inform other VTEPs that it belongs to the broadcast and unknown-unicast replication set. Which Junos networking action or protocol decision best addresses this requirement?

  1. Use matching BGP route-target import and export policies for the tenant service.
  2. Use EVPN Type 3 inclusive multicast Ethernet tag route signaling.
  3. Use Ethernet auto-discovery EVPN Type 1 route signaling.
  4. Inspect EVPN MAC/IP routes and associated BGP signaling as well as the bridge MAC table.

Explanation

Correct Answer

B:

This action addresses EVPN Type 3 inclusive multicast. Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.

Incorrect Answers

A:

That action targets EVPN route target import: Only EVPN routes carrying permitted targets are imported into the intended service instance. It does not directly resolve the stated EVPN Type 3 inclusive multicast requirement.

C:

That action targets EVPN Type 1 Ethernet discovery: Remote EVPN peers can learn the Ethernet segment's auto-discovery reachability. It does not directly resolve the stated EVPN Type 3 inclusive multicast requirement.

D:

That action targets EVPN control plane discovery: The operator can distinguish remotely signaled EVPN reachability from local MAC learning. It does not directly resolve the stated EVPN Type 3 inclusive multicast requirement.

Question 746

A Junos network engineer takes this step: Use EVPN Type 3 inclusive multicast Ethernet tag route signaling. Which outcome most directly follows?

  1. The operator can distinguish remotely signaled EVPN reachability from local MAC learning.
  2. Only EVPN routes carrying permitted targets are imported into the intended service instance.
  3. Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.
  4. Remote EVPN peers can learn the Ethernet segment's auto-discovery reachability.

Explanation

Correct Answer

C:

This is the direct result of the EVPN Type 3 inclusive multicast decision: Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.

Incorrect Answers

A:

This outcome is associated with EVPN control plane discovery (Inspect EVPN MAC/IP routes and associated BGP signaling as well as the bridge MAC table.), not the specified action.

B:

This outcome is associated with EVPN route target import (Use matching BGP route-target import and export policies for the tenant service.), not the specified action.

D:

This outcome is associated with EVPN Type 1 Ethernet discovery (Use Ethernet auto-discovery EVPN Type 1 route signaling.), not the specified action.

Question 747

A new VXLAN bridge-domain participant needs to inform other VTEPs that it belongs to the broadcast and unknown-unicast replication set. A colleague instead suggests: Use matching BGP route-target import and export policies for the tenant service. Which corrective approach most directly addresses the original issue?

  1. Inspect EVPN MAC/IP routes and associated BGP signaling as well as the bridge MAC table.
  2. Use Ethernet auto-discovery EVPN Type 1 route signaling.
  3. Use matching BGP route-target import and export policies for the tenant service.
  4. Use EVPN Type 3 inclusive multicast Ethernet tag route signaling.

Explanation

Correct Answer

D:

This corrective choice addresses EVPN Type 3 inclusive multicast. Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.

Incorrect Answers

A:

That alternative applies to EVPN control plane discovery instead. The operator can distinguish remotely signaled EVPN reachability from local MAC learning.

B:

That alternative applies to EVPN Type 1 Ethernet discovery instead. Remote EVPN peers can learn the Ethernet segment's auto-discovery reachability.

C:

That alternative applies to EVPN route target import instead. Only EVPN routes carrying permitted targets are imported into the intended service instance.

Question 748

An enterprise network designer recommends: Use EVPN Type 3 inclusive multicast Ethernet tag route signaling. Which situation most clearly calls for this action?

  1. A new VXLAN bridge-domain participant needs to inform other VTEPs that it belongs to the broadcast and unknown-unicast replication set.
  2. An EVPN multihomed Ethernet segment needs signaling to advertise association with reachable provider edge routers.
  3. An operator tries to find remote tenant MAC addresses solely by examining locally learned Ethernet frames.
  4. A VTEP must import only EVPN routes belonging to its authorized tenant rather than every EVPN route in the fabric.

Explanation

Correct Answer

A:

This case requires the EVPN Type 3 inclusive multicast action. Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.

Incorrect Answers

B:

This other case would be better matched to Use Ethernet auto-discovery EVPN Type 1 route signaling. Remote EVPN peers can learn the Ethernet segment's auto-discovery reachability.

C:

This other case would be better matched to Inspect EVPN MAC/IP routes and associated BGP signaling as well as the bridge MAC table. The operator can distinguish remotely signaled EVPN reachability from local MAC learning.

D:

This other case would be better matched to Use matching BGP route-target import and export policies for the tenant service. Only EVPN routes carrying permitted targets are imported into the intended service instance.

Question 749

Two tenants advertise identical MAC and IP information through overlapping EVPN address spaces and need distinct BGP route identities. Which Junos networking action or protocol decision best addresses this requirement?

  1. Assign appropriate route distinguishers to uniquely identify EVPN routes.
  2. Configure the same supported Ethernet segment identifier for the intended multihoming pair.
  3. Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint.
  4. Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint.

Explanation

Correct Answer

A:

This action addresses EVPN BGP route distinguisher. Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane.

Incorrect Answers

B:

That action targets EVPN ESI identification: EVPN peers can recognize the dual-connected links as one Ethernet segment. It does not directly resolve the stated EVPN BGP route distinguisher requirement.

C:

That action targets EVPN MAC mobility: Remote peers can update forwarding toward the new MAC location. It does not directly resolve the stated EVPN BGP route distinguisher requirement.

D:

That action targets EVPN Type 2 MAC IP route: Remote peers can learn host reachability without relying solely on data-plane flooding. It does not directly resolve the stated EVPN BGP route distinguisher requirement.

Question 750

A Junos network engineer takes this step: Assign appropriate route distinguishers to uniquely identify EVPN routes. Which outcome most directly follows?

  1. Remote peers can update forwarding toward the new MAC location.
  2. Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane.
  3. Remote peers can learn host reachability without relying solely on data-plane flooding.
  4. EVPN peers can recognize the dual-connected links as one Ethernet segment.

Explanation

Correct Answer

B:

This is the direct result of the EVPN BGP route distinguisher decision: Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane.

Incorrect Answers

A:

This outcome is associated with EVPN MAC mobility (Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint.), not the specified action.

C:

This outcome is associated with EVPN Type 2 MAC IP route (Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint.), not the specified action.

D:

This outcome is associated with EVPN ESI identification (Configure the same supported Ethernet segment identifier for the intended multihoming pair.), not the specified action.

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