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Exam Code: HPE7-A08

Exam Name HPE Network Switching Professional

Certification Provider: HP

Corresponding Certification: HPE Aruba Networking Certified Professional - Switching

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HP HPE7-A08 Practice Test 36

Question 350

At Ironwood Public Services, the city network service team is preparing a new municipal office activation. The operational constraint is an approved redundant path. The change ticket is marked completed for this reported failure: Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. Which result BEST demonstrates that this specific issue was resolved?

  1. A supported optic and clean fiber path produce a stable operational link.
  2. The duplicate is removed and gateway IP-to-MAC resolution remains stable.
  3. Power allocation fits the camera class and the camera boots without denial counters increasing.
  4. The host MAC appears in VLAN 140 and can reach its expected local peers.

Explanation

Correct Answer

B:

The duplicate is removed and gateway IP-to-MAC resolution remains stable. This is the relevant acceptance observation for the reported issue: Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. The intended corrective choice is: Investigate duplicate IP or incorrect gateway assignments using ARP and address inventory evidence. At Ironwood Public Services, this outcome verifies actual operation under an approved redundant path, rather than only a ticket marked complete.

Incorrect Answers

A:

A supported optic and clean fiber path produce a stable operational link. Such an observation would verify a separate issue: A newly cabled fiber uplink reports no light and the transceiver inventory shows an unsupported optic. It would follow the distinct action: Validate the exact transceiver model and optical path before attempting Layer 2 policy changes. Here the reported failure is Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. The decisive result for Ironwood Public Services must instead be: The duplicate is removed and gateway IP-to-MAC resolution remains stable.

C:

Power allocation fits the camera class and the camera boots without denial counters increasing. Such an observation would verify a separate issue: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. It would follow the distinct action: Diagnose available PoE budget and port power limits rather than changing VLAN or routing. Here the reported failure is Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. The decisive result for Ironwood Public Services must instead be: The duplicate is removed and gateway IP-to-MAC resolution remains stable.

D:

The host MAC appears in VLAN 140 and can reach its expected local peers. Such an observation would verify a separate issue: A user connects to an access port but cannot reach peers because the switchport is assigned VLAN 40 instead of required VLAN 140. It would follow the distinct action: Compare port VLAN membership with the documented access VLAN and correct the mismatch. Here the reported failure is Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. The decisive result for Ironwood Public Services must instead be: The duplicate is removed and gateway IP-to-MAC resolution remains stable.

Question 351

At Meadowbrook Commerce, the production IT team is preparing a customer-service center expansion. The operational constraint is low-latency real-time collaboration. The implementation review flags: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Which action BEST corrects the stated problem?

  1. Validate the exact transceiver model and optical path before attempting Layer 2 policy changes.
  2. Reconcile the untagged/native VLAN expectations on both ends or use explicit tagging where supported.
  3. Check whether the port's supported voice VLAN configuration and endpoint tagging agree.
  4. Check interface VRF assignment and per-VRF route tables rather than assuming global-route visibility.

Explanation

Correct Answer

D:

Check interface VRF assignment and per-VRF route tables rather than assuming global-route visibility. This response directly addresses the observed condition: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. For Meadowbrook Commerce during a customer-service center expansion, the decisive check is not merely that a configuration was entered: The guest VRF contains an approved route and traffic stays within the intended tenant isolation. That evidence connects the proposed correction to measurable forwarding or management behavior.

Incorrect Answers

A:

Validate the exact transceiver model and optical path before attempting Layer 2 policy changes. That relates to a different fault: A newly cabled fiber uplink reports no light and the transceiver inventory shows an unsupported optic. The incident in the scenario is instead: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Changing the unrelated setting does not establish the required repair at Meadowbrook Commerce; the relevant confirmation would be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

B:

Reconcile the untagged/native VLAN expectations on both ends or use explicit tagging where supported. That relates to a different fault: An untagged management flow disappears across two trunk ports because each side expects a different native VLAN. The incident in the scenario is instead: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Changing the unrelated setting does not establish the required repair at Meadowbrook Commerce; the relevant confirmation would be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

C:

Check whether the port's supported voice VLAN configuration and endpoint tagging agree. That relates to a different fault: A phone receives an address from the user data subnet and cannot reach its voice controller. The incident in the scenario is instead: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Changing the unrelated setting does not establish the required repair at Meadowbrook Commerce; the relevant confirmation would be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

Question 352

At Meadowbrook Commerce, the production IT team is preparing a customer-service center expansion. The operational constraint is low-latency real-time collaboration. After a proposed fix, the team needs observable evidence that it resolved: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Which result BEST demonstrates that this specific issue was resolved?

  1. The guest VRF contains an approved route and traffic stays within the intended tenant isolation.
  2. The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.
  3. A supported optic and clean fiber path produce a stable operational link.
  4. Both neighbors share the intended subnet and ICMP tests pass after correction.

Explanation

Correct Answer

A:

The guest VRF contains an approved route and traffic stays within the intended tenant isolation. This is the relevant acceptance observation for the reported issue: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The intended corrective choice is: Check interface VRF assignment and per-VRF route tables rather than assuming global-route visibility. At Meadowbrook Commerce, this outcome verifies actual operation under low-latency real-time collaboration, rather than only a ticket marked complete.

Incorrect Answers

B:

The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear. Such an observation would verify a separate issue: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. It would follow the distinct action: Compare OSPF area settings on the participating interfaces with the approved design. Here the reported failure is An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The decisive result for Meadowbrook Commerce must instead be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

C:

A supported optic and clean fiber path produce a stable operational link. Such an observation would verify a separate issue: A newly cabled fiber uplink reports no light and the transceiver inventory shows an unsupported optic. It would follow the distinct action: Validate the exact transceiver model and optical path before attempting Layer 2 policy changes. Here the reported failure is An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The decisive result for Meadowbrook Commerce must instead be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

D:

Both neighbors share the intended subnet and ICMP tests pass after correction. Such an observation would verify a separate issue: Two directly connected routed ports have addresses from different /30 networks and cannot ping each other. It would follow the distinct action: Compare subnet masks and interface addressing and restore a consistent point-to-point IP plan. Here the reported failure is An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The decisive result for Meadowbrook Commerce must instead be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

Question 353

At Cedar Point Manufacturing, the industrial campus engineering team is preparing a production-line network refresh. The operational constraint is strict line-stop avoidance. Engineers isolate the following gap: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Which action BEST corrects the stated problem?

  1. Inspect interface administrative versus physical state and enable only the approved link.
  2. Compare subnet masks and interface addressing and restore a consistent point-to-point IP plan.
  3. Check interface VRF assignment and per-VRF route tables rather than assuming global-route visibility.
  4. Validate the exact transceiver model and optical path before attempting Layer 2 policy changes.

Explanation

Correct Answer

C:

Check interface VRF assignment and per-VRF route tables rather than assuming global-route visibility. This response directly addresses the observed condition: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. For Cedar Point Manufacturing during a production-line network refresh, the decisive check is not merely that a configuration was entered: The guest VRF contains an approved route and traffic stays within the intended tenant isolation. That evidence connects the proposed correction to measurable forwarding or management behavior.

Incorrect Answers

A:

Inspect interface administrative versus physical state and enable only the approved link. That relates to a different fault: An uplink has optic light and expected VLAN settings yet reports an administratively disabled interface. The incident in the scenario is instead: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Changing the unrelated setting does not establish the required repair at Cedar Point Manufacturing; the relevant confirmation would be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

B:

Compare subnet masks and interface addressing and restore a consistent point-to-point IP plan. That relates to a different fault: Two directly connected routed ports have addresses from different /30 networks and cannot ping each other. The incident in the scenario is instead: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Changing the unrelated setting does not establish the required repair at Cedar Point Manufacturing; the relevant confirmation would be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

D:

Validate the exact transceiver model and optical path before attempting Layer 2 policy changes. That relates to a different fault: A newly cabled fiber uplink reports no light and the transceiver inventory shows an unsupported optic. The incident in the scenario is instead: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Changing the unrelated setting does not establish the required repair at Cedar Point Manufacturing; the relevant confirmation would be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

Question 354

At Cedar Point Manufacturing, the industrial campus engineering team is preparing a production-line network refresh. The operational constraint is strict line-stop avoidance. The change ticket is marked completed for this reported failure: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. Which result BEST demonstrates that this specific issue was resolved?

  1. Both neighbors share the intended subnet and ICMP tests pass after correction.
  2. Both LAG members negotiate and enter the intended forwarding state.
  3. The VLAN interface becomes operational with the intended member-link state.
  4. The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

Explanation

Correct Answer

D:

The guest VRF contains an approved route and traffic stays within the intended tenant isolation. This is the relevant acceptance observation for the reported issue: An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The intended corrective choice is: Check interface VRF assignment and per-VRF route tables rather than assuming global-route visibility. At Cedar Point Manufacturing, this outcome verifies actual operation under strict line-stop avoidance, rather than only a ticket marked complete.

Incorrect Answers

A:

Both neighbors share the intended subnet and ICMP tests pass after correction. Such an observation would verify a separate issue: Two directly connected routed ports have addresses from different /30 networks and cannot ping each other. It would follow the distinct action: Compare subnet masks and interface addressing and restore a consistent point-to-point IP plan. Here the reported failure is An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The decisive result for Cedar Point Manufacturing must instead be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

B:

Both LAG members negotiate and enter the intended forwarding state. Such an observation would verify a separate issue: A two-member LAG forwards through one cable only; its peer reports no LACP partner on the other member. It would follow the distinct action: Compare LACP mode, bundle membership and interface compatibility on both devices. Here the reported failure is An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The decisive result for Cedar Point Manufacturing must instead be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

C:

The VLAN interface becomes operational with the intended member-link state. Such an observation would verify a separate issue: A switch hosts VLAN 320 endpoints but reports its routed VLAN interface down with no active member ports. It would follow the distinct action: Inspect SVI operational prerequisites including active VLAN membership and correct L3 configuration. Here the reported failure is An application works in the default VRF but not a guest VRF although the route is visible elsewhere on the switch. The decisive result for Cedar Point Manufacturing must instead be: The guest VRF contains an approved route and traffic stays within the intended tenant isolation.

Question 355

At Granite Energy, the data-center interconnect team is preparing a resilient operations-center expansion. The operational constraint is documented segmentation boundaries. The implementation review flags: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Which action BEST corrects the stated problem?

  1. Compare LACP mode, bundle membership and interface compatibility on both devices.
  2. Investigate duplicate IP or incorrect gateway assignments using ARP and address inventory evidence.
  3. Inspect spanning-tree role/state and topology before treating the blocked port as hardware failure.
  4. Compare OSPF area settings on the participating interfaces with the approved design.

Explanation

Correct Answer

D:

Compare OSPF area settings on the participating interfaces with the approved design. This response directly addresses the observed condition: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. For Granite Energy during a resilient operations-center expansion, the decisive check is not merely that a configuration was entered: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear. That evidence connects the proposed correction to measurable forwarding or management behavior.

Incorrect Answers

A:

Compare LACP mode, bundle membership and interface compatibility on both devices. That relates to a different fault: A two-member LAG forwards through one cable only; its peer reports no LACP partner on the other member. The incident in the scenario is instead: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Changing the unrelated setting does not establish the required repair at Granite Energy; the relevant confirmation would be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

B:

Investigate duplicate IP or incorrect gateway assignments using ARP and address inventory evidence. That relates to a different fault: Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. The incident in the scenario is instead: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Changing the unrelated setting does not establish the required repair at Granite Energy; the relevant confirmation would be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

C:

Inspect spanning-tree role/state and topology before treating the blocked port as hardware failure. That relates to a different fault: A redundant port is blocked by STP, but the incident report incorrectly calls it a defective link. The incident in the scenario is instead: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Changing the unrelated setting does not establish the required repair at Granite Energy; the relevant confirmation would be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

Question 356

At Granite Energy, the data-center interconnect team is preparing a resilient operations-center expansion. The operational constraint is documented segmentation boundaries. After a proposed fix, the team needs observable evidence that it resolved: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Which result BEST demonstrates that this specific issue was resolved?

  1. The host MAC appears in VLAN 140 and can reach its expected local peers.
  2. The duplicate is removed and gateway IP-to-MAC resolution remains stable.
  3. The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.
  4. The VLAN interface becomes operational with the intended member-link state.

Explanation

Correct Answer

C:

The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear. This is the relevant acceptance observation for the reported issue: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The intended corrective choice is: Compare OSPF area settings on the participating interfaces with the approved design. At Granite Energy, this outcome verifies actual operation under documented segmentation boundaries, rather than only a ticket marked complete.

Incorrect Answers

A:

The host MAC appears in VLAN 140 and can reach its expected local peers. Such an observation would verify a separate issue: A user connects to an access port but cannot reach peers because the switchport is assigned VLAN 40 instead of required VLAN 140. It would follow the distinct action: Compare port VLAN membership with the documented access VLAN and correct the mismatch. Here the reported failure is OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The decisive result for Granite Energy must instead be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

B:

The duplicate is removed and gateway IP-to-MAC resolution remains stable. Such an observation would verify a separate issue: Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. It would follow the distinct action: Investigate duplicate IP or incorrect gateway assignments using ARP and address inventory evidence. Here the reported failure is OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The decisive result for Granite Energy must instead be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

D:

The VLAN interface becomes operational with the intended member-link state. Such an observation would verify a separate issue: A switch hosts VLAN 320 endpoints but reports its routed VLAN interface down with no active member ports. It would follow the distinct action: Inspect SVI operational prerequisites including active VLAN membership and correct L3 configuration. Here the reported failure is OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The decisive result for Granite Energy must instead be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

Question 357

At Quarryside Pharma, the validated-operations network group is preparing a regulated facility expansion. The operational constraint is traceable controls and rollback. Engineers isolate the following gap: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Which action BEST corrects the stated problem?

  1. Compare OSPF area settings on the participating interfaces with the approved design.
  2. Diagnose available PoE budget and port power limits rather than changing VLAN or routing.
  3. Investigate duplicate IP or incorrect gateway assignments using ARP and address inventory evidence.
  4. Validate the exact transceiver model and optical path before attempting Layer 2 policy changes.

Explanation

Correct Answer

A:

Compare OSPF area settings on the participating interfaces with the approved design. This response directly addresses the observed condition: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. For Quarryside Pharma during a regulated facility expansion, the decisive check is not merely that a configuration was entered: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear. That evidence connects the proposed correction to measurable forwarding or management behavior.

Incorrect Answers

B:

Diagnose available PoE budget and port power limits rather than changing VLAN or routing. That relates to a different fault: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. The incident in the scenario is instead: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Changing the unrelated setting does not establish the required repair at Quarryside Pharma; the relevant confirmation would be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

C:

Investigate duplicate IP or incorrect gateway assignments using ARP and address inventory evidence. That relates to a different fault: Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. The incident in the scenario is instead: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Changing the unrelated setting does not establish the required repair at Quarryside Pharma; the relevant confirmation would be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

D:

Validate the exact transceiver model and optical path before attempting Layer 2 policy changes. That relates to a different fault: A newly cabled fiber uplink reports no light and the transceiver inventory shows an unsupported optic. The incident in the scenario is instead: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Changing the unrelated setting does not establish the required repair at Quarryside Pharma; the relevant confirmation would be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

Question 358

At Quarryside Pharma, the validated-operations network group is preparing a regulated facility expansion. The operational constraint is traceable controls and rollback. The change ticket is marked completed for this reported failure: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. Which result BEST demonstrates that this specific issue was resolved?

  1. The VLAN interface becomes operational with the intended member-link state.
  2. The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.
  3. The duplicate is removed and gateway IP-to-MAC resolution remains stable.
  4. The port reports admin-up and operational-up and passes the expected traffic.

Explanation

Correct Answer

B:

The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear. This is the relevant acceptance observation for the reported issue: OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The intended corrective choice is: Compare OSPF area settings on the participating interfaces with the approved design. At Quarryside Pharma, this outcome verifies actual operation under traceable controls and rollback, rather than only a ticket marked complete.

Incorrect Answers

A:

The VLAN interface becomes operational with the intended member-link state. Such an observation would verify a separate issue: A switch hosts VLAN 320 endpoints but reports its routed VLAN interface down with no active member ports. It would follow the distinct action: Inspect SVI operational prerequisites including active VLAN membership and correct L3 configuration. Here the reported failure is OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The decisive result for Quarryside Pharma must instead be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

C:

The duplicate is removed and gateway IP-to-MAC resolution remains stable. Such an observation would verify a separate issue: Two endpoints intermittently lose access and ARP tables alternate between different MACs for one gateway IP. It would follow the distinct action: Investigate duplicate IP or incorrect gateway assignments using ARP and address inventory evidence. Here the reported failure is OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The decisive result for Quarryside Pharma must instead be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

D:

The port reports admin-up and operational-up and passes the expected traffic. Such an observation would verify a separate issue: An uplink has optic light and expected VLAN settings yet reports an administratively disabled interface. It would follow the distinct action: Inspect interface administrative versus physical state and enable only the approved link. Here the reported failure is OSPF neighbors share a physical VLAN but one uses a different area number and adjacency never becomes Full. The decisive result for Quarryside Pharma must instead be: The OSPF neighbor reaches the appropriate adjacency state and expected prefixes appear.

Question 359

At Alder Transit, the branch-to-campus connectivity team is preparing a staged station-switch migration. The operational constraint is a short overnight outage window. The implementation review flags: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. Which action BEST corrects the stated problem?

  1. Validate the exact transceiver model and optical path before attempting Layer 2 policy changes.
  2. Diagnose available PoE budget and port power limits rather than changing VLAN or routing.
  3. Reconcile the untagged/native VLAN expectations on both ends or use explicit tagging where supported.
  4. Check whether the port's supported voice VLAN configuration and endpoint tagging agree.

Explanation

Correct Answer

B:

Diagnose available PoE budget and port power limits rather than changing VLAN or routing. This response directly addresses the observed condition: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. For Alder Transit during a staged station-switch migration, the decisive check is not merely that a configuration was entered: Power allocation fits the camera class and the camera boots without denial counters increasing. That evidence connects the proposed correction to measurable forwarding or management behavior.

Incorrect Answers

A:

Validate the exact transceiver model and optical path before attempting Layer 2 policy changes. That relates to a different fault: A newly cabled fiber uplink reports no light and the transceiver inventory shows an unsupported optic. The incident in the scenario is instead: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. Changing the unrelated setting does not establish the required repair at Alder Transit; the relevant confirmation would be: Power allocation fits the camera class and the camera boots without denial counters increasing.

C:

Reconcile the untagged/native VLAN expectations on both ends or use explicit tagging where supported. That relates to a different fault: An untagged management flow disappears across two trunk ports because each side expects a different native VLAN. The incident in the scenario is instead: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. Changing the unrelated setting does not establish the required repair at Alder Transit; the relevant confirmation would be: Power allocation fits the camera class and the camera boots without denial counters increasing.

D:

Check whether the port's supported voice VLAN configuration and endpoint tagging agree. That relates to a different fault: A phone receives an address from the user data subnet and cannot reach its voice controller. The incident in the scenario is instead: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. Changing the unrelated setting does not establish the required repair at Alder Transit; the relevant confirmation would be: Power allocation fits the camera class and the camera boots without denial counters increasing.

Question 360

At Alder Transit, the branch-to-campus connectivity team is preparing a staged station-switch migration. The operational constraint is a short overnight outage window. After a proposed fix, the team needs observable evidence that it resolved: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. Which result BEST demonstrates that this specific issue was resolved?

  1. A supported optic and clean fiber path produce a stable operational link.
  2. Topology output shows the deliberate alternate path and failover behavior works without a loop.
  3. Both neighbors share the intended subnet and ICMP tests pass after correction.
  4. Power allocation fits the camera class and the camera boots without denial counters increasing.

Explanation

Correct Answer

D:

Power allocation fits the camera class and the camera boots without denial counters increasing. This is the relevant acceptance observation for the reported issue: A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. The intended corrective choice is: Diagnose available PoE budget and port power limits rather than changing VLAN or routing. At Alder Transit, this outcome verifies actual operation under a short overnight outage window, rather than only a ticket marked complete.

Incorrect Answers

A:

A supported optic and clean fiber path produce a stable operational link. Such an observation would verify a separate issue: A newly cabled fiber uplink reports no light and the transceiver inventory shows an unsupported optic. It would follow the distinct action: Validate the exact transceiver model and optical path before attempting Layer 2 policy changes. Here the reported failure is A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. The decisive result for Alder Transit must instead be: Power allocation fits the camera class and the camera boots without denial counters increasing.

B:

Topology output shows the deliberate alternate path and failover behavior works without a loop. Such an observation would verify a separate issue: A redundant port is blocked by STP, but the incident report incorrectly calls it a defective link. It would follow the distinct action: Inspect spanning-tree role/state and topology before treating the blocked port as hardware failure. Here the reported failure is A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. The decisive result for Alder Transit must instead be: Power allocation fits the camera class and the camera boots without denial counters increasing.

C:

Both neighbors share the intended subnet and ICMP tests pass after correction. Such an observation would verify a separate issue: Two directly connected routed ports have addresses from different /30 networks and cannot ping each other. It would follow the distinct action: Compare subnet masks and interface addressing and restore a consistent point-to-point IP plan. Here the reported failure is A PoE-powered camera stays dark while the link is otherwise healthy; telemetry reports insufficient allocation budget. The decisive result for Alder Transit must instead be: Power allocation fits the camera class and the camera boots without denial counters increasing.