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Cisco 300-410 Bundle

Exam Code: 300-410

Exam Name Implementing Cisco Enterprise Advanced Routing and Services (ENARSI)

Certification Provider: Cisco

Corresponding Certification: CCNP Enterprise

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Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) (300-410) Practice Tests

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Cisco 300-410 Practice Test 24

Question 230

At the Silverstream data center, EIGRP hellos pass across the transit link, yet R-SIL-PE1 never forms a neighbor with R-RIV-PE2; the peers use different EIGRP AS numbers. Which underlying technical condition best accounts for this evidence?

  1. EIGRP peers in different AS configurations will not establish the intended neighbor relationship.
  2. The leaf is participating in a query domain larger than its topology role requires.
  3. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.
  4. The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings.

Explanation

Correct Answer

A:

This diagnosis fits the symptoms at the Silverstream data center. EIGRP peers in different AS configurations will not establish the intended neighbor relationship. The remedial action is: Configure matching EIGRP autonomous-system values for the participating adjacency.

Incorrect Answers

B:

The observation at the Silverstream data center does not point to eigrp query scope using stub; it points to a different condition. EIGRP peers in different AS configurations will not establish the intended neighbor relationship.

C:

This diagnoses a different mechanism: Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance. The reported symptom at the Silverstream data center instead concerns eigrp as mismatch.

D:

That diagnosis belongs to eigrp delay in composite metric, while the observation at the Silverstream data center points to eigrp as mismatch.

Question 231

At the Lakeside transit hub, R-LAK-CORE1 and R-EAST-EDGE2 exchange EIGRP hello packets but authentication failures prevent the neighbor from coming up. Which underlying technical condition best accounts for this evidence?

  1. The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings.
  2. Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required.
  3. EIGRP peers in different AS configurations will not establish the intended neighbor relationship.
  4. The adjacency rejects peer packets because their authentication settings do not agree.

Explanation

Correct Answer

D:

The adjacency rejects peer packets because their authentication settings do not agree. That explains the specific symptom at the Lakeside transit hub. A direct corrective action is: Make the EIGRP authentication mode and key configuration consistent on both ends.

Incorrect Answers

A:

This diagnoses a different mechanism: The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings. The reported symptom at the Lakeside transit hub instead concerns eigrp authentication mismatch.

B:

That diagnosis belongs to eigrp passive-interface adjacency, while the observation at the Lakeside transit hub points to eigrp authentication mismatch.

C:

The observation at the Lakeside transit hub does not point to eigrp as mismatch; it points to a different condition. The adjacency rejects peer packets because their authentication settings do not agree.

Question 232

At the Southridge banking office, R-SRG-EDGE1 and R-MPC-EDGE2 exchange EIGRP hello packets but authentication failures prevent the neighbor from coming up. Which underlying technical condition best accounts for this evidence?

  1. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.
  2. The leaf is participating in a query domain larger than its topology role requires.
  3. EIGRP peers in different AS configurations will not establish the intended neighbor relationship.
  4. The adjacency rejects peer packets because their authentication settings do not agree.

Explanation

Correct Answer

D:

The evidence at the Southridge banking office supports this condition: The adjacency rejects peer packets because their authentication settings do not agree. The associated fix is: Make the EIGRP authentication mode and key configuration consistent on both ends.

Incorrect Answers

A:

The observation at the Southridge banking office does not point to eigrp variance traffic sharing; it points to a different condition. The adjacency rejects peer packets because their authentication settings do not agree.

B:

This diagnoses a different mechanism: The leaf is participating in a query domain larger than its topology role requires. The reported symptom at the Southridge banking office instead concerns eigrp authentication mismatch.

C:

That diagnosis belongs to eigrp as mismatch, while the observation at the Southridge banking office points to eigrp authentication mismatch.

Question 233

At the Westlake utility network, R-WLK-EDGE1 advertises connected networks locally but will not discover R-GRID-EDGE2 across the transit interface because that interface is passive. Which underlying technical condition best accounts for this evidence?

  1. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.
  2. The leaf is participating in a query domain larger than its topology role requires.
  3. Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required.
  4. The adjacency rejects peer packets because their authentication settings do not agree.

Explanation

Correct Answer

C:

Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required. That explains the specific symptom at the Westlake utility network. A direct corrective action is: Remove passive-interface status from the legitimate EIGRP transit port, keeping host-only interfaces passive.

Incorrect Answers

A:

That diagnosis belongs to eigrp variance traffic sharing, while the observation at the Westlake utility network points to eigrp passive-interface adjacency.

B:

The observation at the Westlake utility network does not point to eigrp query scope using stub; it points to a different condition. Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required.

D:

That diagnosis belongs to eigrp authentication mismatch, while the observation at the Westlake utility network points to eigrp passive-interface adjacency.

Question 234

At the Pinecrest freight terminal, R-PIN-WAN1 advertises connected networks locally but will not discover R-PRT-WAN2 across the transit interface because that interface is passive. Which underlying technical condition best accounts for this evidence?

  1. The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings.
  2. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.
  3. Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required.
  4. EIGRP peers in different AS configurations will not establish the intended neighbor relationship.

Explanation

Correct Answer

C:

The evidence at the Pinecrest freight terminal supports this condition: Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required. The associated fix is: Remove passive-interface status from the legitimate EIGRP transit port, keeping host-only interfaces passive.

Incorrect Answers

A:

This diagnoses a different mechanism: The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings. The reported symptom at the Pinecrest freight terminal instead concerns eigrp passive-interface adjacency.

B:

That diagnosis belongs to eigrp variance traffic sharing, while the observation at the Pinecrest freight terminal points to eigrp passive-interface adjacency.

D:

This diagnoses a different mechanism: EIGRP peers in different AS configurations will not establish the intended neighbor relationship. The reported symptom at the Pinecrest freight terminal instead concerns eigrp passive-interface adjacency.

Question 235

At the Cedarfield retail branch, a backup EIGRP path to 10.94.0.0/16 has reported distance 130 and the current feasible distance is 100; a technician labels it an immediately usable feasible successor. Which underlying technical condition best accounts for this evidence?

  1. The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100.
  2. The leaf is participating in a query domain larger than its topology role requires.
  3. The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings.
  4. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.

Explanation

Correct Answer

A:

The evidence at the Cedarfield retail branch supports this condition: The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100. The associated fix is: Evaluate the reported-distance-less-than-feasible-distance condition before treating a backup as feasible.

Incorrect Answers

B:

This diagnoses a different mechanism: The leaf is participating in a query domain larger than its topology role requires. The reported symptom at the Cedarfield retail branch instead concerns eigrp feasible successor inequality.

C:

That diagnosis belongs to eigrp delay in composite metric, while the observation at the Cedarfield retail branch points to eigrp feasible successor inequality.

D:

The observation at the Cedarfield retail branch does not point to eigrp variance traffic sharing; it points to a different condition. The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100.

Question 236

At the Bluewater clinical network, a backup EIGRP path to 10.215.0.0/16 has reported distance 130 and the current feasible distance is 100; a technician labels it an immediately usable feasible successor. Which underlying technical condition best accounts for this evidence?

  1. The leaf is participating in a query domain larger than its topology role requires.
  2. The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100.
  3. EIGRP peers in different AS configurations will not establish the intended neighbor relationship.
  4. The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings.

Explanation

Correct Answer

B:

The evidence at the Bluewater clinical network supports this condition: The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100. The associated fix is: Evaluate the reported-distance-less-than-feasible-distance condition before treating a backup as feasible.

Incorrect Answers

A:

That diagnosis belongs to eigrp query scope using stub, while the observation at the Bluewater clinical network points to eigrp feasible successor inequality.

C:

This diagnoses a different mechanism: EIGRP peers in different AS configurations will not establish the intended neighbor relationship. The reported symptom at the Bluewater clinical network instead concerns eigrp feasible successor inequality.

D:

That diagnosis belongs to eigrp delay in composite metric, while the observation at the Bluewater clinical network points to eigrp feasible successor inequality.

Question 237

At the Harborview media campus, a remote spoke R-INL-DIST2 receives broad EIGRP queries when a hub loses 10.127.0.0/16, leaving the route active for too long. Which underlying technical condition best accounts for this evidence?

  1. The adjacency rejects peer packets because their authentication settings do not agree.
  2. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.
  3. The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings.
  4. The leaf is participating in a query domain larger than its topology role requires.

Explanation

Correct Answer

D:

The leaf is participating in a query domain larger than its topology role requires. That explains the specific symptom at the Harborview media campus. A direct corrective action is: Configure appropriate EIGRP stub behavior on the leaf spoke and verify permitted route advertisements.

Incorrect Answers

A:

This diagnoses a different mechanism: The adjacency rejects peer packets because their authentication settings do not agree. The reported symptom at the Harborview media campus instead concerns eigrp query scope using stub.

B:

That diagnosis belongs to eigrp variance traffic sharing, while the observation at the Harborview media campus points to eigrp query scope using stub.

C:

The observation at the Harborview media campus does not point to eigrp delay in composite metric; it points to a different condition. The leaf is participating in a query domain larger than its topology role requires.

Question 238

At the Ironwood training campus, a remote spoke R-CLR-RT2 receives broad EIGRP queries when a hub loses 10.248.0.0/16, leaving the route active for too long. Which underlying technical condition best accounts for this evidence?

  1. The EIGRP route metric reflects interface delay as well as bandwidth under standard metric settings.
  2. Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required.
  3. The adjacency rejects peer packets because their authentication settings do not agree.
  4. The leaf is participating in a query domain larger than its topology role requires.

Explanation

Correct Answer

D:

The evidence at the Ironwood training campus supports this condition: The leaf is participating in a query domain larger than its topology role requires. The associated fix is: Configure appropriate EIGRP stub behavior on the leaf spoke and verify permitted route advertisements.

Incorrect Answers

A:

The observation at the Ironwood training campus does not point to eigrp delay in composite metric; it points to a different condition. The leaf is participating in a query domain larger than its topology role requires.

B:

This diagnoses a different mechanism: Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required. The reported symptom at the Ironwood training campus instead concerns eigrp query scope using stub.

C:

That diagnosis belongs to eigrp authentication mismatch, while the observation at the Ironwood training campus points to eigrp query scope using stub.

Question 239

At the Hillcrest research lab, an alternate EIGRP route is feasible but has a higher metric and is not installed alongside the primary path as desired. Which underlying technical condition best accounts for this evidence?

  1. Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required.
  2. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.
  3. EIGRP peers in different AS configurations will not establish the intended neighbor relationship.
  4. The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100.

Explanation

Correct Answer

B:

The evidence at the Hillcrest research lab supports this condition: Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance. The associated fix is: Configure EIGRP variance within the feasible-path and feasible-distance limitations for unequal-cost load balancing.

Incorrect Answers

A:

That diagnosis belongs to eigrp passive-interface adjacency, while the observation at the Hillcrest research lab points to eigrp variance traffic sharing.

C:

This diagnoses a different mechanism: EIGRP peers in different AS configurations will not establish the intended neighbor relationship. The reported symptom at the Hillcrest research lab instead concerns eigrp variance traffic sharing.

D:

That diagnosis belongs to eigrp feasible successor inequality, while the observation at the Hillcrest research lab points to eigrp variance traffic sharing.

Question 240

At the Northport logistics site, an alternate EIGRP route is feasible but has a higher metric and is not installed alongside the primary path as desired. Which underlying technical condition best accounts for this evidence?

  1. The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100.
  2. The leaf is participating in a query domain larger than its topology role requires.
  3. Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance.
  4. Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required.

Explanation

Correct Answer

C:

The evidence at the Northport logistics site supports this condition: Default EIGRP forwarding does not use the desired unequal-cost feasible alternate without appropriate variance. The associated fix is: Configure EIGRP variance within the feasible-path and feasible-distance limitations for unequal-cost load balancing.

Incorrect Answers

A:

This diagnoses a different mechanism: The alternate path fails the strict EIGRP feasibility condition because 130 is not below 100. The reported symptom at the Northport logistics site instead concerns eigrp variance traffic sharing.

B:

That diagnosis belongs to eigrp query scope using stub, while the observation at the Northport logistics site points to eigrp variance traffic sharing.

D:

This diagnoses a different mechanism: Passive-interface suppresses routing-neighbor discovery where an EIGRP adjacency is required. The reported symptom at the Northport logistics site instead concerns eigrp variance traffic sharing.