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HP HPE7-A08 Bundle

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 44

Question 430

The HPE AOS-CX switching case is: A new building's CCTV VLAN never passes the interbuilding link despite healthy physical carrier. Which TWO choices together provide the targeted remedy and independent validation? (Select TWO.)

  1. Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.
  2. A probe from each side of the affected trunk passes on the required VLAN without unapproved tag leakage.
  3. Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.
  4. Inspect MSTP region configuration, root election and per-instance port states to explain blocking or topology churn.
  5. A compliant endpoint authenticates into its expected role and receives an authorized lease with correct gateway and DNS.

Explanation

Correct Answers

A:

The targeted correction for A new building's CCTV VLAN never passes the interbuilding link despite healthy physical carrier is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop. It reduces the risk that one mismatched trunk can isolate an entire VLAN while other VLANs continue operating normally, obscuring the break.

B:

A separate operational validation for A new building's CCTV VLAN never passes the interbuilding link despite healthy physical carrier is: A probe from each side of the affected trunk passes on the required VLAN without unapproved tag leakage. It proves intended behavior instead of accepting configuration presence alone.

Incorrect Answers

C:

This alternative concerns ethernet carrier optic and physical fault isolation; its associated risk is: Repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up. The observed case A new building's CCTV VLAN never passes the interbuilding link despite healthy physical carrier requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

D:

This alternative concerns spanning tree topology and root inconsistency; its associated risk is: An unexpected root or mismatched region can suppress the intended redundant forwarding path and cause intermittent client connectivity. The observed case A new building's CCTV VLAN never passes the interbuilding link despite healthy physical carrier requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

E:

This alternative concerns dhcp and wired-authentication first-hop failures; its associated risk is: A blocked DHCP relay or failed RADIUS policy can masquerade as a dead network even though forwarding interfaces remain operational. The observed case A new building's CCTV VLAN never passes the interbuilding link despite healthy physical carrier requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

Question 431

An HPE Aruba Networking engineer observes: An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly. The corrective solution must keep intended connectivity, segmentation, and operational resilience. Which response best satisfies the technical requirement without disrupting unrelated traffic?

  1. Compare a failed endpoint's observed MAC-learning VLAN, access interface membership and IP lease with the expected role.
  2. Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.
  3. Compare LACP partner IDs, actor states, member eligibility and upstream wiring to locate a failed or partially formed bundle.
  4. Review VSF member status, conductor role, topology and stack link health before treating missing interfaces as VLAN misconfiguration.

Explanation

Correct Answer

B:

The decisive observed condition is: An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly. The appropriate switching action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop. It addresses the risk that one mismatched trunk can isolate an entire VLAN while other VLANs continue operating normally, obscuring the break. Confirm with: A probe from each side of the affected trunk passes on the required VLAN without unapproved tag leakage.

Incorrect Answers

A:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

C:

This alternative concerns lacp aggregator and individual member failure; its associated risk is: A LAG with the wrong partner or member state can behave like a link failure despite all cables showing carrier. The observed case An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

D:

This alternative concerns vsf member identity and split detection fault; its associated risk is: A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable. The observed case An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

Question 432

The switch operations team reports: An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly. What is the most relevant operational exposure in this switching scenario?

  1. A LAG with the wrong partner or member state can behave like a link failure despite all cables showing carrier.
  2. A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable.
  3. A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services.
  4. One mismatched trunk can isolate an entire VLAN while other VLANs continue operating normally, obscuring the break.

Explanation

Correct Answer

D:

The direct operational failure mode is: One mismatched trunk can isolate an entire VLAN while other VLANs continue operating normally, obscuring the break. It applies to the condition An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly. The suitable corrective action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop. Independently validate using: A probe from each side of the affected trunk passes on the required VLAN without unapproved tag leakage.

Incorrect Answers

A:

This alternative concerns lacp aggregator and individual member failure; its associated risk is: A LAG with the wrong partner or member state can behave like a link failure despite all cables showing carrier. The observed case An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

B:

This alternative concerns vsf member identity and split detection fault; its associated risk is: A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable. The observed case An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

C:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case An unexpected guest VLAN is forwarded through a restricted uplink because the trunk allowed list was copied broadly requires the more specific trunk allowed vlan and native tag fault detection control. The targeted action is: Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.

Question 433

An HPE Aruba Networking engineer observes: One fiber uplink loses carrier whenever a patch cord is moved near the optical panel. The corrective solution must keep intended connectivity, segmentation, and operational resilience. Which change best addresses the observed switching requirement?

  1. Compare a failed endpoint's observed MAC-learning VLAN, access interface membership and IP lease with the expected role.
  2. Compare LACP partner IDs, actor states, member eligibility and upstream wiring to locate a failed or partially formed bundle.
  3. Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.
  4. Review VSF member status, conductor role, topology and stack link health before treating missing interfaces as VLAN misconfiguration.

Explanation

Correct Answer

C:

The decisive observed condition is: One fiber uplink loses carrier whenever a patch cord is moved near the optical panel. The appropriate switching action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. It addresses the risk that repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up. Confirm with: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.

Incorrect Answers

A:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case One fiber uplink loses carrier whenever a patch cord is moved near the optical panel requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

B:

This alternative concerns lacp aggregator and individual member failure; its associated risk is: A LAG with the wrong partner or member state can behave like a link failure despite all cables showing carrier. The observed case One fiber uplink loses carrier whenever a patch cord is moved near the optical panel requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns vsf member identity and split detection fault; its associated risk is: A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable. The observed case One fiber uplink loses carrier whenever a patch cord is moved near the optical panel requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

Question 434

An engineer investigates: One fiber uplink loses carrier whenever a patch cord is moved near the optical panel. What network observation should the team require before approving completion?

  1. Both ends show expected active aggregation members and service survives one physical member shutdown.
  2. The stack returns to a single intended logical inventory with healthy member ports and validated failover.
  3. A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.
  4. MAC tables and host lease tests confirm the intended VLAN and matching first-hop gateway after correction.

Explanation

Correct Answer

C:

The independent acceptance evidence for One fiber uplink loses carrier whenever a patch cord is moved near the optical panel is: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test. It tests whether the team has actually implemented: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. An enabled interface or saved configuration by itself is not evidence of complete service recovery.

Incorrect Answers

A:

This alternative concerns lacp aggregator and individual member failure; its associated risk is: A LAG with the wrong partner or member state can behave like a link failure despite all cables showing carrier. The observed case One fiber uplink loses carrier whenever a patch cord is moved near the optical panel requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

B:

This alternative concerns vsf member identity and split detection fault; its associated risk is: A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable. The observed case One fiber uplink loses carrier whenever a patch cord is moved near the optical panel requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case One fiber uplink loses carrier whenever a patch cord is moved near the optical panel requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

Question 435

An HPE Aruba Networking engineer observes: A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use. The corrective solution must keep intended connectivity, segmentation, and operational resilience. What is the most defensible operational action before closing the network change?

  1. Compare a failed endpoint's observed MAC-learning VLAN, access interface membership and IP lease with the expected role.
  2. Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.
  3. Trace the affected VLAN over all inter-switch trunks and reconcile tagged or untagged handling at each hop.
  4. Review VSF member status, conductor role, topology and stack link health before treating missing interfaces as VLAN misconfiguration.

Explanation

Correct Answer

B:

The decisive observed condition is: A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use. The appropriate switching action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. It addresses the risk that repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up. Confirm with: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.

Incorrect Answers

A:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

C:

This alternative concerns trunk allowed vlan and native tag fault detection; its associated risk is: One mismatched trunk can isolate an entire VLAN while other VLANs continue operating normally, obscuring the break. The observed case A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns vsf member identity and split detection fault; its associated risk is: A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable. The observed case A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

Question 436

The switch operations team reports: A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use. Which consequence explains why the described network state is unsuitable?

  1. A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services.
  2. One mismatched trunk can isolate an entire VLAN while other VLANs continue operating normally, obscuring the break.
  3. Repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up.
  4. A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable.

Explanation

Correct Answer

C:

The direct operational failure mode is: Repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up. It applies to the condition A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use. The suitable corrective action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. Independently validate using: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.

Incorrect Answers

A:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

B:

This alternative concerns trunk allowed vlan and native tag fault detection; its associated risk is: One mismatched trunk can isolate an entire VLAN while other VLANs continue operating normally, obscuring the break. The observed case A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns vsf member identity and split detection fault; its associated risk is: A failed stack member or split may remove physical access ports and strand endpoints while the logical switch remains partially reachable. The observed case A replacement transceiver negotiates link but has rapidly increasing CRC errors during peak use requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

Question 437

An HPE Aruba Networking engineer observes: A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling. The corrective solution must keep intended connectivity, segmentation, and operational resilience. Which implementation or troubleshooting step directly resolves the specific network issue?

  1. Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.
  2. Inspect MSTP region configuration, root election and per-instance port states to explain blocking or topology churn.
  3. Compare LACP partner IDs, actor states, member eligibility and upstream wiring to locate a failed or partially formed bundle.
  4. Compare a failed endpoint's observed MAC-learning VLAN, access interface membership and IP lease with the expected role.

Explanation

Correct Answer

A:

The decisive observed condition is: A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling. The appropriate switching action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. It addresses the risk that repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up. Confirm with: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.

Incorrect Answers

B:

This alternative concerns spanning tree topology and root inconsistency; its associated risk is: An unexpected root or mismatched region can suppress the intended redundant forwarding path and cause intermittent client connectivity. The observed case A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

C:

This alternative concerns lacp aggregator and individual member failure; its associated risk is: A LAG with the wrong partner or member state can behave like a link failure despite all cables showing carrier. The observed case A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

Question 438

An engineer investigates: A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling. What network observation should the team require before approving completion?

  1. MSTP state returns to the designed root and port roles after a controlled link-state test.
  2. MAC tables and host lease tests confirm the intended VLAN and matching first-hop gateway after correction.
  3. A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.
  4. Both ends show expected active aggregation members and service survives one physical member shutdown.

Explanation

Correct Answer

C:

The independent acceptance evidence for A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling is: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test. It tests whether the team has actually implemented: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. An enabled interface or saved configuration by itself is not evidence of complete service recovery.

Incorrect Answers

A:

This alternative concerns spanning tree topology and root inconsistency; its associated risk is: An unexpected root or mismatched region can suppress the intended redundant forwarding path and cause intermittent client connectivity. The observed case A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

B:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns lacp aggregator and individual member failure; its associated risk is: A LAG with the wrong partner or member state can behave like a link failure despite all cables showing carrier. The observed case A campus endpoint runs at 100 Mb/s because a damaged cable pair prevents reliable 1 Gb/s signaling requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

Question 439

An HPE Aruba Networking engineer observes: An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block. The corrective solution must keep intended connectivity, segmentation, and operational resilience. Which response best satisfies the technical requirement without disrupting unrelated traffic?

  1. Inspect MSTP region configuration, root election and per-instance port states to explain blocking or topology churn.
  2. Compare a failed endpoint's observed MAC-learning VLAN, access interface membership and IP lease with the expected role.
  3. Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.
  4. Start IP reachability triage by comparing host address, mask, default gateway and SVI subnet on the actual VLAN before changing routes.

Explanation

Correct Answer

C:

The decisive observed condition is: An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block. The appropriate switching action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. It addresses the risk that repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up. Confirm with: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.

Incorrect Answers

A:

This alternative concerns spanning tree topology and root inconsistency; its associated risk is: An unexpected root or mismatched region can suppress the intended redundant forwarding path and cause intermittent client connectivity. The observed case An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

B:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns duplicate or mismatched host ipv4 settings; its associated risk is: A duplicate or off-subnet gateway can make traffic fail at the first hop even while switch links and route tables appear normal. The observed case An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

Question 440

The HPE AOS-CX switching case is: An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block. Select TWO: a corrective switching action and separate evidence that the correction worked. (Select TWO.)

  1. A corrected test host ARPs for the intended gateway and reaches both a local peer and an approved remote subnet.
  2. Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.
  3. A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test.
  4. Inspect MSTP region configuration, root election and per-instance port states to explain blocking or topology churn.
  5. Compare a failed endpoint's observed MAC-learning VLAN, access interface membership and IP lease with the expected role.

Explanation

Correct Answers

B:

The targeted correction for An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues. It reduces the risk that repeated CRC errors or light loss can mimic application failures even when the port intermittently reports up.

C:

A separate operational validation for An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block is: A repaired link maintains expected negotiation and clean counters across a sustained bidirectional traffic test. It proves intended behavior instead of accepting configuration presence alone.

Incorrect Answers

A:

This alternative concerns duplicate or mismatched host ipv4 settings; its associated risk is: A duplicate or off-subnet gateway can make traffic fail at the first hop even while switch links and route tables appear normal. The observed case An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

D:

This alternative concerns spanning tree topology and root inconsistency; its associated risk is: An unexpected root or mismatched region can suppress the intended redundant forwarding path and cause intermittent client connectivity. The observed case An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.

E:

This alternative concerns incorrect vlan access assignment identification; its associated risk is: A host in the wrong access VLAN can contact the wrong DHCP scope or become disconnected from its authorized services. The observed case An interface is administratively disabled while a technician incorrectly diagnoses an unsupported spanning-tree block requires the more specific ethernet carrier optic and physical fault isolation control. The targeted action is: Use port operational status, optical diagnostics and CRC or FCS counters to distinguish physical failure from VLAN and routing issues.