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Exam Code: HPE7-A01

Exam Name HPE Network Campus Access Professional

Certification Provider: HP

Corresponding Certification: HPE Aruba Networking Certified Professional - Campus Access

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HP HPE7-A01 Practice Test 79

Question 780

A campus VLAN can reach its gateway but cannot access an internet SaaS site although neighboring VLANs can. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Use peer comparison when only one user is affected.
  2. Maintain versioned configuration snapshots, owner approval and rollback procedures.
  3. Compare wired and wireless baseline tests during performance incidents.
  4. Keep per-VLAN external access regression tests.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which local gateway success does not verify downstream routed, policy or name-resolution service. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a single client cannot reach a printer even though other clients in the same VLAN succeed. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a campus deployment has repeated outages after hurried template changes, and the NOC has no versioned baseline for comparison. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a network administrator assumes a wireless slowdown is an ISP fault, but wired clients on the same WAN are fast. It would leave the present failure mode insufficiently addressed.

Question 781

A network administrator assumes a wireless slowdown is an ISP fault, but wired clients on the same WAN are fast. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Include error-rate checks in LAN incident intake.
  2. Maintain healthy-floor baselines for rapid comparison.
  3. Include roaming walk tests in voice WLAN changes.
  4. Compare wired and wireless baseline tests during performance incidents.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which the comparative evidence localizes the impairment to the wireless segment. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a user has a valid IP address but intermittent access to a local service, and switch counters show CRC errors. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when only one floor's wireless clients cannot reach DNS while other floors on the same SSID work. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when voice handsets lose calls only after crossing between two APs, while stationary calls remain stable. It would leave the present failure mode insufficiently addressed.

Question 782

Two core switches disagree on an OSPF route after a configuration change, and one advertises a stale static prefix. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Maintain versioned configuration snapshots, owner approval and rollback procedures.
  2. Require controlled redistribution and prefix-policy reviews.
  3. Compare wired and wireless baseline tests during performance incidents.
  4. Use peer comparison when only one user is affected.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which an incorrect redistributed source can create inconsistent advertised reachability. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a campus deployment has repeated outages after hurried template changes, and the NOC has no versioned baseline for comparison. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a network administrator assumes a wireless slowdown is an ISP fault, but wired clients on the same WAN are fast. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a single client cannot reach a printer even though other clients in the same VLAN succeed. It would leave the present failure mode insufficiently addressed.

Question 783

A single client cannot reach a printer even though other clients in the same VLAN succeed. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Use layer-by-layer triage starting at the failing endpoint.
  2. Use peer comparison when only one user is affected.
  3. Keep per-VLAN external access regression tests.
  4. Include error-rate checks in LAN incident intake.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which the difference is likely endpoint-specific rather than a complete subnet outage. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a wired client reports no network access, and a technician wants to replace the core router before inspecting the local port. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a campus VLAN can reach its gateway but cannot access an internet SaaS site although neighboring VLANs can. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a user has a valid IP address but intermittent access to a local service, and switch counters show CRC errors. It would leave the present failure mode insufficiently addressed.

Question 784

Voice handsets lose calls only after crossing between two APs, while stationary calls remain stable. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Maintain versioned configuration snapshots, owner approval and rollback procedures.
  2. Maintain healthy-floor baselines for rapid comparison.
  3. Include roaming walk tests in voice WLAN changes.
  4. Use layer-by-layer triage starting at the failing endpoint.

Explanation

Correct Answer

C:

This is a continuing control for the failure mode in which the time-localized outage points to roaming continuity rather than all-call network capacity. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a campus deployment has repeated outages after hurried template changes, and the NOC has no versioned baseline for comparison. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when only one floor's wireless clients cannot reach DNS while other floors on the same SSID work. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a wired client reports no network access, and a technician wants to replace the core router before inspecting the local port. It would leave the present failure mode insufficiently addressed.

Question 785

A switch appears unreachable from Central yet local console shows healthy data-plane operation. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Compare wired and wireless baseline tests during performance incidents.
  2. Monitor out-of-band management status distinct from forwarding health.
  3. Monitor DHCP server health and relay error counters.
  4. Require controlled redistribution and prefix-policy reviews.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which management connectivity loss does not necessarily imply switching outage. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a network administrator assumes a wireless slowdown is an ISP fault, but wired clients on the same WAN are fast. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when several users lose connectivity after a DHCP renewal while clients with static addresses continue working. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when two core switches disagree on an OSPF route after a configuration change, and one advertises a stale static prefix. It would leave the present failure mode insufficiently addressed.

Question 786

A campus deployment has repeated outages after hurried template changes, and the NOC has no versioned baseline for comparison. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Maintain versioned configuration snapshots, owner approval and rollback procedures.
  2. Keep per-VLAN external access regression tests.
  3. Include EAP failure-stage codes in WLAN support workflows.
  4. Compare wired and wireless baseline tests during performance incidents.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which untracked configuration drift prevents reliable comparison and controlled rollback. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

B:

That control is useful for a different failure, such as when a campus VLAN can reach its gateway but cannot access an internet SaaS site although neighboring VLANs can. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when an AP reports excellent RF signal but EAP-TLS clients fail to join after a certificate update. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a network administrator assumes a wireless slowdown is an ISP fault, but wired clients on the same WAN are fast. It would leave the present failure mode insufficiently addressed.

Question 787

A voice deployment marks DSCP EF at its phones but the access switch does not trust or preserve the marking on ingress. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Review every QoS remarking boundary after routing or security upgrades.
  2. Audit QoS trust only on verified voice-access ports.
  3. Test QoS under congestion rather than idle conditions alone.
  4. Report p95/p99 latency alongside mean in service-level monitoring.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which priority markings are lost before traffic enters the campus QoS scheduling domain. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when an application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. It would leave the present failure mode insufficiently addressed.

Question 788

A campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Test slow legacy devices before changing radio minimum rates.
  2. Test QoS under congestion rather than idle conditions alone.
  3. Set RF minimum performance criteria in voice deployment acceptance.
  4. Audit QoS trust only on verified voice-access ports.

Explanation

Correct Answer

B:

This is a continuing control for the failure mode in which without distinct QoS classes, bulk traffic can queue ahead of latency-sensitive packets. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a wireless network has high airtime consumption from low legacy data rates despite moderate user counts. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a wireless voice call has low RSSI but the WLAN team tries to repair it solely with DSCP priority rules. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a voice deployment marks DSCP EF at its phones but the access switch does not trust or preserve the marking on ingress. It would leave the present failure mode insufficiently addressed.

Question 789

A video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Use site-specific client capability tests before radio rate changes.
  2. Size AP uplinks against realistic aggregate usage rather than radio-rate labels.
  3. Base growth plans on busy-hour traffic and application metrics.
  4. Review every QoS remarking boundary after routing or security upgrades.

Explanation

Correct Answer

D:

This is a continuing control for the failure mode in which a broad remarking rule removes the priority distinction required by the intended service policy. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

A:

That control is useful for a different failure, such as when a WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. It would leave the present failure mode insufficiently addressed.

B:

That control is useful for a different failure, such as when a large class sends video traffic through a 1 Gbps uplink attached to multiple multigigabit APs and the uplink becomes saturated. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a high-density WLAN has a large number of associated idle devices; an operator assumes association count alone proves capacity overload. It would leave the present failure mode insufficiently addressed.

Question 790

A wireless voice call has low RSSI but the WLAN team tries to repair it solely with DSCP priority rules. Which ongoing operational safeguard best reduces the chance of recurrence?

  1. Set RF minimum performance criteria in voice deployment acceptance.
  2. Test slow legacy devices before changing radio minimum rates.
  3. Review every QoS remarking boundary after routing or security upgrades.
  4. Audit QoS trust only on verified voice-access ports.

Explanation

Correct Answer

A:

This is a continuing control for the failure mode in which traffic priority cannot compensate for unusable wireless link quality. It complements the immediate fix instead of relying on a one-off correction.

Incorrect Answers

B:

That control is useful for a different failure, such as when a wireless network has high airtime consumption from low legacy data rates despite moderate user counts. It would leave the present failure mode insufficiently addressed.

C:

That control is useful for a different failure, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. It would leave the present failure mode insufficiently addressed.

D:

That control is useful for a different failure, such as when a voice deployment marks DSCP EF at its phones but the access switch does not trust or preserve the marking on ingress. It would leave the present failure mode insufficiently addressed.