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HP HPE7-A01 Practice Test 27

Question 260

A switch fabric passes small pings but drops larger application frames after one aggregation interface was left at a smaller MTU. The change fails acceptance. What is the safest targeted restoration action?

  1. Restore the previously working end-to-end MTU and revert the isolated change if large traffic still fails.
  2. Restore the last valid SVI address and routing policy to reestablish gateway functionality before retrying migration.
  3. Restore the last correct trunk allowed list and matching tag configuration before reopening the affected VLAN.
  4. Return both trunk ends to the previously matching native VLAN and recheck untagged management reachability.

Explanation

Correct Answer

A:

Restore the previously working end-to-end MTU and revert the isolated change if large traffic still fails. A single low-MTU hop can disrupt large packets even while small connectivity probes succeed; end-to-end sizing matters. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described mtu mismatch in a campus path situation.

Incorrect Answers

B:

Restore the last valid SVI address and routing policy to reestablish gateway functionality before retrying migration. This instead concerns svi versus layer 2 access interface. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. It would not safely roll back the relevant failed change. The immediate problem concerns mtu mismatch in a campus path.

C:

Restore the last correct trunk allowed list and matching tag configuration before reopening the affected VLAN. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not safely roll back the relevant failed change. The immediate problem concerns mtu mismatch in a campus path.

D:

Return both trunk ends to the previously matching native VLAN and recheck untagged management reachability. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not safely roll back the relevant failed change. The immediate problem concerns mtu mismatch in a campus path.

Question 261

A video endpoint reaches its server over a new VLAN but large payloads fail because one routed hop cannot carry the intended packet size. The review requires TWO complementary actions: one diagnostic check and one controlled configuration remedy. Select TWO actions that together meet those requirements.

  1. Review VLAN membership, switched-port state, SVI IP address and whether Layer 3 forwarding is enabled on the intended device.
  2. Review interface and path MTUs, oversized drop counters and ICMP packet-too-big handling.
  3. Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling for the affected campus deployment.
  4. Apply compatible MTU on each required link and routed path while respecting device and application limits.

Explanation

Correct Answers

B:

Review interface and path MTUs, oversized drop counters and ICMP packet-too-big handling. A single low-MTU hop can disrupt large packets even while small connectivity probes succeed; end-to-end sizing matters. This is the required diagnosis or controlled remedy; the other keyed action supplies the complementary role. The decision applies to the described mtu mismatch in a campus path situation.

D:

Apply compatible MTU on each required link and routed path while respecting device and application limits. A single low-MTU hop can disrupt large packets even while small connectivity probes succeed; end-to-end sizing matters. This is the required diagnosis or controlled remedy; the other keyed action supplies the complementary role. The decision applies to the described mtu mismatch in a campus path situation.

Incorrect Answers

A:

Review VLAN membership, switched-port state, SVI IP address and whether Layer 3 forwarding is enabled on the intended device. This instead concerns svi versus layer 2 access interface. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. It is not one of the requested paired diagnosis and configuration actions. The immediate problem concerns mtu mismatch in a campus path.

C:

Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling for the affected campus deployment. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It is not one of the requested paired diagnosis and configuration actions. The immediate problem concerns mtu mismatch in a campus path.

Question 262

A video endpoint reaches its server over a new VLAN but large payloads fail because one routed hop cannot carry the intended packet size. After the root cause is confirmed, which narrowly scoped configuration action should be selected?

  1. Establish or restore the authorized routed VLAN interface and its routing or ACL context, keeping access ports Layer 2.
  2. Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling for the affected campus deployment.
  3. Apply compatible MTU on each required link and routed path while respecting device and application limits.
  4. Match the native VLAN to the approved design or explicitly tag the required traffic on both sides.

Explanation

Correct Answer

C:

Apply compatible MTU on each required link and routed path while respecting device and application limits. A single low-MTU hop can disrupt large packets even while small connectivity probes succeed; end-to-end sizing matters. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described mtu mismatch in a campus path situation.

Incorrect Answers

A:

Establish or restore the authorized routed VLAN interface and its routing or ACL context, keeping access ports Layer 2. This instead concerns svi versus layer 2 access interface. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. It would not implement the specifically required change. The immediate problem concerns mtu mismatch in a campus path.

B:

Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling for the affected campus deployment. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not implement the specifically required change. The immediate problem concerns mtu mismatch in a campus path.

D:

Match the native VLAN to the approved design or explicitly tag the required traffic on both sides. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not implement the specifically required change. The immediate problem concerns mtu mismatch in a campus path.

Question 263

A video endpoint reaches its server over a new VLAN but large payloads fail because one routed hop cannot carry the intended packet size. A deployment job reports success. Which observed result would actually validate the affected service?

  1. Confirm same-VLAN switching and permitted cross-VLAN routing through the intended SVI without unexpected leakage.
  2. Exercise payloads near the intended path size and confirm large frames pass without fragmentation-related loss.
  3. Collect tagged test frames and verify each client VLAN reaches only its intended gateway.
  4. Confirm untagged frames map to the intended VLAN and management traffic remains isolated from client networks.

Explanation

Correct Answer

B:

Exercise payloads near the intended path size and confirm large frames pass without fragmentation-related loss. A single low-MTU hop can disrupt large packets even while small connectivity probes succeed; end-to-end sizing matters. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described mtu mismatch in a campus path situation.

Incorrect Answers

A:

Confirm same-VLAN switching and permitted cross-VLAN routing through the intended SVI without unexpected leakage. This instead concerns svi versus layer 2 access interface. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. It would not establish that this function actually works. The immediate problem concerns mtu mismatch in a campus path.

C:

Collect tagged test frames and verify each client VLAN reaches only its intended gateway. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not establish that this function actually works. The immediate problem concerns mtu mismatch in a campus path.

D:

Confirm untagged frames map to the intended VLAN and management traffic remains isolated from client networks. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not establish that this function actually works. The immediate problem concerns mtu mismatch in a campus path.

Question 264

A video endpoint reaches its server over a new VLAN but large payloads fail because one routed hop cannot carry the intended packet size. If the revised setting disrupts users, which controlled rollback would be most relevant?

  1. Reinstate the previously working end-to-end MTU and revert the isolated change if large traffic still fails.
  2. Reinstate the last valid SVI address and routing policy to reestablish gateway functionality before retrying migration.
  3. Reinstate the last correct trunk allowed list and matching tag configuration before reopening the affected VLAN.
  4. Return both trunk ends to the previously matching native VLAN and recheck untagged management reachability.

Explanation

Correct Answer

A:

Reinstate the previously working end-to-end MTU and revert the isolated change if large traffic still fails. A single low-MTU hop can disrupt large packets even while small connectivity probes succeed; end-to-end sizing matters. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described mtu mismatch in a campus path situation.

Incorrect Answers

B:

Reinstate the last valid SVI address and routing policy to reestablish gateway functionality before retrying migration. This instead concerns svi versus layer 2 access interface. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. It would not safely roll back the relevant failed change. The immediate problem concerns mtu mismatch in a campus path.

C:

Reinstate the last correct trunk allowed list and matching tag configuration before reopening the affected VLAN. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not safely roll back the relevant failed change. The immediate problem concerns mtu mismatch in a campus path.

D:

Return both trunk ends to the previously matching native VLAN and recheck untagged management reachability. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not safely roll back the relevant failed change. The immediate problem concerns mtu mismatch in a campus path. For the incident in this item: A video endpoint reaches its server over a new VLAN but large payloads fail because one routed hop cannot carry the intended packet size.

Question 265

A staff VLAN spans two access switches but cannot reach another subnet because the expected routed VLAN interface is administratively down. Which investigation would best isolate the immediate network dependency?

  1. Inspect VLAN membership, switched-port state, SVI IP address and whether Layer 3 forwarding is enabled on the intended device.
  2. Inspect trunk allowed VLANs, tag state and the connected device's matching VLAN expectations.
  3. Inspect native VLAN settings and untagged ingress or egress classification on both connected trunk interfaces.
  4. Inspect local and peer LACP mode, system IDs and member negotiation state.

Explanation

Correct Answer

A:

Inspect VLAN membership, switched-port state, SVI IP address and whether Layer 3 forwarding is enabled on the intended device. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described svi versus layer 2 access interface situation.

Incorrect Answers

B:

Inspect trunk allowed VLANs, tag state and the connected device's matching VLAN expectations. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It does not isolate the cause of the stated incident. The immediate problem concerns svi versus layer 2 access interface.

C:

Inspect native VLAN settings and untagged ingress or egress classification on both connected trunk interfaces. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It does not isolate the cause of the stated incident. The immediate problem concerns svi versus layer 2 access interface.

D:

Inspect local and peer LACP mode, system IDs and member negotiation state. This instead concerns lacp mode compatibility. LACP negotiation depends on both peers participating in a compatible aggregation; unrelated physical ports cannot safely imitate a bundled link. It does not isolate the cause of the stated incident. The immediate problem concerns svi versus layer 2 access interface.

Question 266

A staff VLAN spans two access switches but cannot reach another subnet because the expected routed VLAN interface is administratively down. Which specific corrective design step best meets the stated campus requirement?

  1. Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling.
  2. Align the native VLAN to the approved design or explicitly tag the required traffic on both sides.
  3. Configure compatible LACP participation on both ends and bundle only links with matching attributes.
  4. Create or restore the authorized routed VLAN interface and its routing or ACL context, keeping access ports Layer 2.

Explanation

Correct Answer

D:

Create or restore the authorized routed VLAN interface and its routing or ACL context, keeping access ports Layer 2. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described svi versus layer 2 access interface situation.

Incorrect Answers

A:

Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not implement the specifically required change. The immediate problem concerns svi versus layer 2 access interface.

B:

Align the native VLAN to the approved design or explicitly tag the required traffic on both sides. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not implement the specifically required change. The immediate problem concerns svi versus layer 2 access interface.

C:

Configure compatible LACP participation on both ends and bundle only links with matching attributes. This instead concerns lacp mode compatibility. LACP negotiation depends on both peers participating in a compatible aggregation; unrelated physical ports cannot safely imitate a bundled link. It would not implement the specifically required change. The immediate problem concerns svi versus layer 2 access interface.

Question 267

A staff VLAN spans two access switches but cannot reach another subnet because the expected routed VLAN interface is administratively down. Following a targeted change, which acceptance test would most directly demonstrate success?

  1. Capture tagged test frames and verify each client VLAN reaches only its intended gateway.
  2. Verify untagged frames map to the intended VLAN and management traffic remains isolated from client networks.
  3. Verify same-VLAN switching and permitted cross-VLAN routing through the intended SVI without unexpected leakage.
  4. Verify the negotiated aggregator and active collecting or distributing member set are stable under traffic.

Explanation

Correct Answer

C:

Verify same-VLAN switching and permitted cross-VLAN routing through the intended SVI without unexpected leakage. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described svi versus layer 2 access interface situation.

Incorrect Answers

A:

Capture tagged test frames and verify each client VLAN reaches only its intended gateway. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not establish that this function actually works. The immediate problem concerns svi versus layer 2 access interface.

B:

Verify untagged frames map to the intended VLAN and management traffic remains isolated from client networks. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not establish that this function actually works. The immediate problem concerns svi versus layer 2 access interface.

D:

Verify the negotiated aggregator and active collecting or distributing member set are stable under traffic. This instead concerns lacp mode compatibility. LACP negotiation depends on both peers participating in a compatible aggregation; unrelated physical ports cannot safely imitate a bundled link. It would not establish that this function actually works. The immediate problem concerns svi versus layer 2 access interface.

Question 268

A staff VLAN spans two access switches but cannot reach another subnet because the expected routed VLAN interface is administratively down. The change fails acceptance. What is the safest targeted restoration action?

  1. Restore the last correct trunk allowed list and matching tag configuration before reopening the affected VLAN.
  2. Restore the last valid SVI address and routing policy to reestablish gateway functionality before retrying migration.
  3. Return both trunk ends to the previously matching native VLAN and recheck untagged management reachability.
  4. Restore the previously compatible channel parameters and isolate any link that would otherwise create parallel paths.

Explanation

Correct Answer

B:

Restore the last valid SVI address and routing policy to reestablish gateway functionality before retrying migration. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described svi versus layer 2 access interface situation.

Incorrect Answers

A:

Restore the last correct trunk allowed list and matching tag configuration before reopening the affected VLAN. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not safely roll back the relevant failed change. The immediate problem concerns svi versus layer 2 access interface.

C:

Return both trunk ends to the previously matching native VLAN and recheck untagged management reachability. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not safely roll back the relevant failed change. The immediate problem concerns svi versus layer 2 access interface.

D:

Restore the previously compatible channel parameters and isolate any link that would otherwise create parallel paths. This instead concerns lacp mode compatibility. LACP negotiation depends on both peers participating in a compatible aggregation; unrelated physical ports cannot safely imitate a bundled link. It would not safely roll back the relevant failed change. The immediate problem concerns svi versus layer 2 access interface.

Question 269

A distribution switch has VLAN membership configured but no working gateway SVI for inter-VLAN routing after a site migration. Before implementing a remedy, what should the engineer check first?

  1. Review VLAN membership, switched-port state, SVI IP address and whether Layer 3 forwarding is enabled on the intended device.
  2. Review trunk allowed VLANs, tag state and the connected device's matching VLAN expectations.
  3. Review native VLAN settings and untagged ingress or egress classification on both connected trunk interfaces.
  4. Review local and peer LACP mode, system IDs and member negotiation state.

Explanation

Correct Answer

A:

Review VLAN membership, switched-port state, SVI IP address and whether Layer 3 forwarding is enabled on the intended device. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described svi versus layer 2 access interface situation.

Incorrect Answers

B:

Review trunk allowed VLANs, tag state and the connected device's matching VLAN expectations. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It does not isolate the cause of the stated incident. The immediate problem concerns svi versus layer 2 access interface.

C:

Review native VLAN settings and untagged ingress or egress classification on both connected trunk interfaces. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It does not isolate the cause of the stated incident. The immediate problem concerns svi versus layer 2 access interface.

D:

Review local and peer LACP mode, system IDs and member negotiation state. This instead concerns lacp mode compatibility. LACP negotiation depends on both peers participating in a compatible aggregation; unrelated physical ports cannot safely imitate a bundled link. It does not isolate the cause of the stated incident. The immediate problem concerns svi versus layer 2 access interface.

Question 270

A distribution switch has VLAN membership configured but no working gateway SVI for inter-VLAN routing after a site migration. After the root cause is confirmed, which narrowly scoped configuration action should be selected?

  1. Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling for the affected campus deployment.
  2. Match the native VLAN to the approved design or explicitly tag the required traffic on both sides.
  3. Set up compatible LACP participation on both ends and bundle only links with matching attributes.
  4. Establish or restore the authorized routed VLAN interface and its routing or ACL context, keeping access ports Layer 2.

Explanation

Correct Answer

D:

Establish or restore the authorized routed VLAN interface and its routing or ACL context, keeping access ports Layer 2. A Layer 2 VLAN groups frames, whereas an SVI provides an IP routing interface; one does not automatically create the other. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described svi versus layer 2 access interface situation.

Incorrect Answers

A:

Permit the approved tagged VLAN IDs on both ends and set compatible native or untagged VLAN handling for the affected campus deployment. This instead concerns vlan tagging on an 802.1q trunk. An IEEE 802.1Q trunk carries multiple VLANs by tags; permitted VLAN membership and native-tag treatment must agree across the link. It would not implement the specifically required change. The immediate problem concerns svi versus layer 2 access interface.

B:

Match the native VLAN to the approved design or explicitly tag the required traffic on both sides. This instead concerns native vlan mismatch. A native VLAN mismatch can silently classify untagged frames into different broadcast domains, even while tagged VLANs operate normally. It would not implement the specifically required change. The immediate problem concerns svi versus layer 2 access interface.

C:

Set up compatible LACP participation on both ends and bundle only links with matching attributes. This instead concerns lacp mode compatibility. LACP negotiation depends on both peers participating in a compatible aggregation; unrelated physical ports cannot safely imitate a bundled link. It would not implement the specifically required change. The immediate problem concerns svi versus layer 2 access interface.

HPE Network Campus Access Professional (HPE7-A01) Practice Tests