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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 76

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.

Question 751

Two tenants advertise identical MAC and IP information through overlapping EVPN address spaces and need distinct BGP route identities. A colleague instead suggests: Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint. Which corrective approach most directly addresses the original issue?

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

Explanation

Correct Answer

C:

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

Incorrect Answers

A:

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

B:

That alternative applies to EVPN Type 2 MAC IP route instead. Remote peers can learn host reachability without relying solely on data-plane flooding.

D:

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

Question 752

An enterprise network designer recommends: Assign appropriate route distinguishers to uniquely identify EVPN routes. Which situation most clearly calls for this action?

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

Explanation

Correct Answer

D:

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

Incorrect Answers

A:

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.

B:

This other case would be better matched to Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint. Remote peers can learn host reachability without relying solely on data-plane flooding.

C:

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 753

A VTEP must import only EVPN routes belonging to its authorized tenant rather than every EVPN route in the fabric. Which Junos networking action or protocol decision best addresses this requirement?

  1. Use Ethernet auto-discovery EVPN Type 1 route signaling.
  2. Use matching BGP route-target import and export policies for the tenant service.
  3. Use EVPN Type 3 inclusive multicast Ethernet tag 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 route target import. Only EVPN routes carrying permitted targets are imported into the intended service instance.

Incorrect Answers

A:

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 route target import requirement.

C:

That action targets EVPN Type 3 inclusive multicast: Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set. It does not directly resolve the stated EVPN route target import 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 route target import requirement.

Question 754

A Junos network engineer takes this step: Use matching BGP route-target import and export policies for the tenant service. Which outcome most directly follows?

  1. The operator can distinguish remotely signaled EVPN reachability from local MAC learning.
  2. Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.
  3. Only EVPN routes carrying permitted targets are imported into the intended service instance.
  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 route target import decision: Only EVPN routes carrying permitted targets are imported into the intended service instance.

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 Type 3 inclusive multicast (Use EVPN Type 3 inclusive multicast Ethernet tag route signaling.), 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 755

A VTEP must import only EVPN routes belonging to its authorized tenant rather than every EVPN route in the fabric. A colleague instead suggests: Inspect EVPN MAC/IP routes and associated BGP signaling as well as the bridge MAC table. Which corrective approach most directly addresses the original issue?

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

Explanation

Correct Answer

D:

This corrective choice addresses EVPN route target import. Only EVPN routes carrying permitted targets are imported into the intended service instance.

Incorrect Answers

A:

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

B:

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

C:

That alternative applies to EVPN Type 3 inclusive multicast instead. Remote VTEPs can learn members of the broadcast unknown-unicast multicast delivery set.

Question 756

An enterprise network designer recommends: Use matching BGP route-target import and export policies for the tenant service. Which situation most clearly calls for this action?

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

Explanation

Correct Answer

A:

This case requires the EVPN route target import action. Only EVPN routes carrying permitted targets are imported into the intended service instance.

Incorrect Answers

B:

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.

C:

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.

D:

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 757

A virtual machine moves between VTEPs while retaining its MAC address and traffic must follow the new attachment point. Which Junos networking action or protocol decision best addresses this requirement?

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

Explanation

Correct Answer

D:

This action addresses EVPN MAC mobility. Remote peers can update forwarding toward the new MAC location.

Incorrect Answers

A:

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 MAC mobility requirement.

B:

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 MAC mobility requirement.

C:

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 MAC mobility requirement.

Question 758

A Junos network engineer takes this step: Use EVPN MAC mobility signaling and appropriate sequence handling for the moved endpoint. Which outcome most directly follows?

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

Explanation

Correct Answer

A:

This is the direct result of the EVPN MAC mobility decision: Remote peers can update forwarding toward the new MAC location.

Incorrect Answers

B:

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.

C:

This outcome is associated with EVPN BGP route distinguisher (Assign appropriate route distinguishers to uniquely identify EVPN routes.), 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 759

A virtual machine moves between VTEPs while retaining its MAC address and traffic must follow the new attachment point. A colleague instead suggests: Configure the same supported Ethernet segment identifier for the intended multihoming pair. Which corrective approach most directly addresses the original issue?

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

Explanation

Correct Answer

B:

This corrective choice addresses EVPN MAC mobility. Remote peers can update forwarding toward the new MAC location.

Incorrect Answers

A:

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

C:

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

D:

That alternative applies to EVPN Type 2 MAC IP route instead. Remote peers can learn host reachability without relying solely on data-plane flooding.

Question 760

An enterprise network designer recommends: Use EVPN MAC mobility signaling and appropriate sequence handling for the moved 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. A customer Ethernet segment is dual-attached to two EVPN provider edge switches and the control plane must recognize their shared segment identity.
  3. A virtual machine moves between VTEPs while retaining its MAC address and traffic must follow the new attachment point.
  4. Two tenants advertise identical MAC and IP information through overlapping EVPN address spaces and need distinct BGP route identities.

Explanation

Correct Answer

C:

This case requires the EVPN MAC mobility action. Remote peers can update forwarding toward the new MAC location.

Incorrect Answers

A:

This other case would be better matched to Advertise a BGP EVPN MAC/IP Type 2 route for the endpoint. Remote peers can learn host reachability without relying solely on data-plane flooding.

B:

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 Assign appropriate route distinguishers to uniquely identify EVPN routes. Otherwise identical tenant reachability can remain distinct in the BGP EVPN control plane.

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