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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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Cisco 300-410 Practice Test 41

Question 400

At the Redwood medical campus, users report unstable application connectivity and operations needs a correlated view of endpoint experience, device health and network path status instead of raw interface counters alone. Which underlying technical condition best accounts for this evidence?

  1. The active probe uses the wrong routing context and cannot take the same path as customer traffic.
  2. The exporter and collector disagree on flow-record format or template handling.
  3. A successful echo test confirms reachability but does not capture the application's jitter requirements.
  4. Isolated interface statistics do not explain the combined endpoint, device and network symptoms.

Explanation

Correct Answer

D:

The evidence at the Redwood medical campus supports this condition: Isolated interface statistics do not explain the combined endpoint, device and network symptoms. The associated fix is: Use Cisco Catalyst Center Assurance to correlate client or device health with path and connectivity observations.

Incorrect Answers

A:

The observation at the Redwood medical campus does not point to ip sla source interface in vrf; it points to a different condition. Isolated interface statistics do not explain the combined endpoint, device and network symptoms.

B:

This diagnoses a different mechanism: The exporter and collector disagree on flow-record format or template handling. The reported symptom at the Redwood medical campus instead concerns catalyst center assurance path health.

C:

That diagnosis belongs to ip sla jitter versus simple ping, while the observation at the Redwood medical campus points to catalyst center assurance path health.

Question 401

At the Redwood medical campus, R-RED-EDGE1 learns the same 10.21.0.0/16 prefix through eBGP and OSPF; the eBGP next hop is reachable, but engineers assumed OSPF's lower metric would win. After remediation, which observation would most directly demonstrate the intended result?

  1. The installed route and its administrative-distance value match the approved eBGP-versus-OSPF preference.
  2. The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.
  3. The authorized /24 is accepted while unrelated longer and shorter prefixes remain filtered.
  4. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.

Explanation

Correct Answer

A:

A meaningful acceptance check at the Redwood medical campus should verify the actual forwarding or control-plane outcome. The installed route and its administrative-distance value match the approved eBGP-versus-OSPF preference.

Incorrect Answers

B:

The result addresses floating static backup route, not the observed fault at the Redwood medical campus. The decisive outcome is different: The installed route and its administrative-distance value match the approved eBGP-versus-OSPF preference.

C:

This validates an unrelated control at the Redwood medical campus: The authorized /24 is accepted while unrelated longer and shorter prefixes remain filtered. It would not demonstrate correction of routing-source administrative distance.

D:

That test could pass while the specific fault remains. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes. It would not establish the required outcome for routing-source administrative distance at the Redwood medical campus.

Question 402

At the Cedarbrook hospital, R-CDR-WAN1 learns the same 10.138.0.0/16 prefix through eBGP and OSPF; the eBGP next hop is reachable, but engineers assumed OSPF's lower metric would win. After remediation, which observation would most directly demonstrate the intended result?

  1. All relevant internal routers select the intended egress, not just the locally tuned router.
  2. OSPF neighbors reach Full and the intended stub-area LSAs are present.
  3. The installed route and its administrative-distance value match the approved eBGP-versus-OSPF preference.
  4. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.

Explanation

Correct Answer

C:

The stated result demonstrates that the specific condition at the Cedarbrook hospital has been corrected. The installed route and its administrative-distance value match the approved eBGP-versus-OSPF preference.

Incorrect Answers

A:

This validates an unrelated control at the Cedarbrook hospital: All relevant internal routers select the intended egress, not just the locally tuned router. It would not demonstrate correction of routing-source administrative distance.

B:

That test could pass while the specific fault remains. OSPF neighbors reach Full and the intended stub-area LSAs are present. It would not establish the required outcome for routing-source administrative distance at the Cedarbrook hospital.

D:

This validates an unrelated control at the Cedarbrook hospital: The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes. It would not demonstrate correction of routing-source administrative distance.

Question 403

At the Bayview university campus, a static route meant to be a standby path remains installed instead of the dynamic route over the recovered primary link to the Albany research network. After remediation, which observation would most directly demonstrate the intended result?

  1. The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.
  2. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.
  3. The OSPF adjacency reaches Full with no authentication failures.
  4. The virtual link reaches Full and the isolated area's backbone reachability is restored.

Explanation

Correct Answer

A:

The stated result demonstrates that the specific condition at the Bayview university campus has been corrected. The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.

Incorrect Answers

B:

This validates an unrelated control at the Bayview university campus: The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes. It would not demonstrate correction of floating static backup route.

C:

That test could pass while the specific fault remains. The OSPF adjacency reaches Full with no authentication failures. It would not establish the required outcome for floating static backup route at the Bayview university campus.

D:

The result addresses ospf virtual link transit area, not the observed fault at the Bayview university campus. The decisive outcome is different: The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.

Question 404

At the Clearwater library district, a static route meant to be a standby path remains installed instead of the dynamic route over the recovered primary link to the West archives campus. After remediation, which observation would most directly demonstrate the intended result?

  1. The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.
  2. Each prefix covered by the aggregate has a valid forwarding path, or the aggregate is appropriately withdrawn.
  3. BGP reaches Established over the loopback path and exchanges authorized prefixes.
  4. Routes learned from one client are appropriately reflected to other clients without a full mesh.

Explanation

Correct Answer

A:

A meaningful acceptance check at the Clearwater library district should verify the actual forwarding or control-plane outcome. The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.

Incorrect Answers

B:

The result addresses summary black hole from missing component, not the observed fault at the Clearwater library district. The decisive outcome is different: The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.

C:

This validates an unrelated control at the Clearwater library district: BGP reaches Established over the loopback path and exchanges authorized prefixes. It would not demonstrate correction of floating static backup route.

D:

That test could pass while the specific fault remains. Routes learned from one client are appropriately reflected to other clients without a full mesh. It would not establish the required outcome for floating static backup route at the Clearwater library district.

Question 405

At the Highland government office, R-HIG-RT1 redistributes selected branch prefixes with a route map, but an otherwise valid 10.83.0.0/16 route is omitted after the last deny clause. After remediation, which observation would most directly demonstrate the intended result?

  1. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.
  2. BGP reaches Established over the loopback path and exchanges authorized prefixes.
  3. Policy-matched traffic falls back or changes next hop when the specified gateway becomes unavailable.
  4. The transit EIGRP neighbor forms while user-facing access interfaces remain passive.

Explanation

Correct Answer

A:

This tests the exact behavior that was failing at the Highland government office. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes. The change supporting that outcome is: Add a narrowly scoped permit sequence for the intended prefix after the restrictive route-map entries.

Incorrect Answers

B:

That test could pass while the specific fault remains. BGP reaches Established over the loopback path and exchanges authorized prefixes. It would not establish the required outcome for route-map implicit deny at the Highland government office.

C:

The result addresses pbr next-hop reachability, not the observed fault at the Highland government office. The decisive outcome is different: The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.

D:

This validates an unrelated control at the Highland government office: The transit EIGRP neighbor forms while user-facing access interfaces remain passive. It would not demonstrate correction of route-map implicit deny.

Question 406

At the Foothill municipal site, R-FOO-DIST1 redistributes selected branch prefixes with a route map, but an otherwise valid 10.204.0.0/16 route is omitted after the last deny clause. After remediation, which observation would most directly demonstrate the intended result?

  1. The recovered dynamic route is installed, while the higher-distance static route becomes active only when the preferred path disappears.
  2. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.
  3. The neighbor progresses through database exchange to Full, and MTUs match the design.
  4. Internal routers prefer the exit with the higher approved local-preference value.

Explanation

Correct Answer

B:

This tests the exact behavior that was failing at the Foothill municipal site. The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes. The change supporting that outcome is: Add a narrowly scoped permit sequence for the intended prefix after the restrictive route-map entries.

Incorrect Answers

A:

The result addresses floating static backup route, not the observed fault at the Foothill municipal site. The decisive outcome is different: The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.

C:

That test could pass while the specific fault remains. The neighbor progresses through database exchange to Full, and MTUs match the design. It would not establish the required outcome for route-map implicit deny at the Foothill municipal site.

D:

The result addresses bgp local preference path policy, not the observed fault at the Foothill municipal site. The decisive outcome is different: The intended branch prefix is advertised after matching the new permit sequence, without admitting unrelated routes.

Question 407

At the Silverstream data center, R-SIL-PE1 receives a desired /24 component of an aggregate, but a prefix-list rule allowing only the aggregate's exact mask rejects it. After remediation, which observation would most directly demonstrate the intended result?

  1. OSPF neighbors reach Full and the intended stub-area LSAs are present.
  2. The authorized /24 is accepted while unrelated longer and shorter prefixes remain filtered.
  3. Both interfaces show the planned network type and the adjacency becomes Full.
  4. The neighbor progresses through database exchange to Full, and MTUs match the design.

Explanation

Correct Answer

B:

The stated result demonstrates that the specific condition at the Silverstream data center has been corrected. The authorized /24 is accepted while unrelated longer and shorter prefixes remain filtered.

Incorrect Answers

A:

That test could pass while the specific fault remains. OSPF neighbors reach Full and the intended stub-area LSAs are present. It would not establish the required outcome for prefix-list mask-length filtering at the Silverstream data center.

C:

This validates an unrelated control at the Silverstream data center: Both interfaces show the planned network type and the adjacency becomes Full. It would not demonstrate correction of prefix-list mask-length filtering.

D:

That test could pass while the specific fault remains. The neighbor progresses through database exchange to Full, and MTUs match the design. It would not establish the required outcome for prefix-list mask-length filtering at the Silverstream data center.

Question 408

At the Brookstone distribution branch, R-BRK-EDGE1 receives a desired /24 component of an aggregate, but a prefix-list rule allowing only the aggregate's exact mask rejects it. After remediation, which observation would most directly demonstrate the intended result?

  1. All relevant internal routers select the intended egress, not just the locally tuned router.
  2. Each prefix covered by the aggregate has a valid forwarding path, or the aggregate is appropriately withdrawn.
  3. The authorized /24 is accepted while unrelated longer and shorter prefixes remain filtered.
  4. Neighbors learn only the intended connected prefixes with a valid composite metric.

Explanation

Correct Answer

C:

The stated result demonstrates that the specific condition at the Brookstone distribution branch has been corrected. The authorized /24 is accepted while unrelated longer and shorter prefixes remain filtered.

Incorrect Answers

A:

This validates an unrelated control at the Brookstone distribution branch: All relevant internal routers select the intended egress, not just the locally tuned router. It would not demonstrate correction of prefix-list mask-length filtering.

B:

That test could pass while the specific fault remains. Each prefix covered by the aggregate has a valid forwarding path, or the aggregate is appropriately withdrawn. It would not establish the required outcome for prefix-list mask-length filtering at the Brookstone distribution branch.

D:

This validates an unrelated control at the Brookstone distribution branch: Neighbors learn only the intended connected prefixes with a valid composite metric. It would not demonstrate correction of prefix-list mask-length filtering.

Question 409

At the Southridge banking office, OSPF routes enter EIGRP through R-SRG-EDGE1 and are later returned to OSPF at the Main processing center, producing unstable preferred paths to 10.149.0.0/16. After remediation, which observation would most directly demonstrate the intended result?

  1. The ABR advertises the intended inter-area summary with correct reachability for its component networks.
  2. Neighbors learn only the intended connected prefixes with a valid composite metric.
  3. Each prefix covered by the aggregate has a valid forwarding path, or the aggregate is appropriately withdrawn.
  4. Routes retain an origin tag and the return redistribution point rejects already-imported routes.

Explanation

Correct Answer

D:

The stated result demonstrates that the specific condition at the Southridge banking office has been corrected. Routes retain an origin tag and the return redistribution point rejects already-imported routes.

Incorrect Answers

A:

The result addresses ospf area range configured on wrong border, not the observed fault at the Southridge banking office. The decisive outcome is different: Routes retain an origin tag and the return redistribution point rejects already-imported routes.

B:

This validates an unrelated control at the Southridge banking office: Neighbors learn only the intended connected prefixes with a valid composite metric. It would not demonstrate correction of redistribution loop route tagging.

C:

That test could pass while the specific fault remains. Each prefix covered by the aggregate has a valid forwarding path, or the aggregate is appropriately withdrawn. It would not establish the required outcome for redistribution loop route tagging at the Southridge banking office.

Question 410

At the Lakeside transit hub, OSPF routes enter EIGRP through R-LAK-CORE1 and are later returned to OSPF at the East depot network, producing unstable preferred paths to 10.32.0.0/16. After remediation, which observation would most directly demonstrate the intended result?

  1. The intended prefix appears as the expected external route while unrelated partner prefixes stay absent.
  2. The ABR advertises the intended inter-area summary with correct reachability for its component networks.
  3. Routes retain an origin tag and the return redistribution point rejects already-imported routes.
  4. Each prefix covered by the aggregate has a valid forwarding path, or the aggregate is appropriately withdrawn.

Explanation

Correct Answer

C:

This tests the exact behavior that was failing at the Lakeside transit hub. Routes retain an origin tag and the return redistribution point rejects already-imported routes. The change supporting that outcome is: Tag redistributed routes at entry and filter those tags from re-entering their origin protocol.

Incorrect Answers

A:

That test could pass while the specific fault remains. The intended prefix appears as the expected external route while unrelated partner prefixes stay absent. It would not establish the required outcome for redistribution loop route tagging at the Lakeside transit hub.

B:

The result addresses ospf area range configured on wrong border, not the observed fault at the Lakeside transit hub. The decisive outcome is different: Routes retain an origin tag and the return redistribution point rejects already-imported routes.

D:

That test could pass while the specific fault remains. Each prefix covered by the aggregate has a valid forwarding path, or the aggregate is appropriately withdrawn. It would not establish the required outcome for redistribution loop route tagging at the Lakeside transit hub.