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HP HPE7-A01 Practice Test 77

Question 760

A branch WLAN uses a voice-capable SSID but DSCP-to-WMM mapping is wrong and calls break up under file-transfer load. If the revised setting disrupts users, which controlled rollback would be most relevant?

  1. Reinstate prior airtime scheduling settings if the change harms legitimate client connectivity at cell edges.
  2. Reinstate the previously accepted channel widths and reuse map if the new configuration increases adjacent-cell interference.
  3. Reinstate the last healthy QoS mapping and cap competing bulk traffic while investigating the misclassification.
  4. Return to the last working AP location and power settings while retesting a less obstructed candidate site.

Explanation

Correct Answer

C:

Reinstate the last healthy QoS mapping and cap competing bulk traffic while investigating the misclassification. WMM differentiates wireless contention by access category; a voice SSID label does not automatically prioritize packet airtime. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described 802.11e wmm voice queues situation.

Incorrect Answers

A:

Reinstate prior airtime scheduling settings if the change harms legitimate client connectivity at cell edges. This instead concerns airtime fairness across slow clients. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. It would not safely roll back the relevant failed change. The immediate problem concerns 802.11e wmm voice queues.

B:

Reinstate the previously accepted channel widths and reuse map if the new configuration increases adjacent-cell interference. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It would not safely roll back the relevant failed change. The immediate problem concerns 802.11e wmm voice queues.

D:

Return to the last working AP location and power settings while retesting a less obstructed candidate site. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not safely roll back the relevant failed change. The immediate problem concerns 802.11e wmm voice queues. For the incident in this item: A branch WLAN uses a voice-capable SSID but DSCP-to-WMM mapping is wrong and calls break up under file-transfer load.

Question 761

A WLAN cell's total throughput collapses when one distant station transmits at very low data rates alongside modern clients. Which investigation would best isolate the immediate network dependency?

  1. Inspect site survey spectrum reuse, client PHY capabilities and channel utilization at the configured width.
  2. Inspect bidirectional RSSI and SNR, floorplan obstructions, client transmit capabilities and overlap with neighboring cells.
  3. Inspect per-client PHY rates, airtime consumption and supported fairness scheduling behavior.
  4. Inspect broadcast and multicast rates, client discovery requirements and available WLAN optimization features.

Explanation

Correct Answer

C:

Inspect per-client PHY rates, airtime consumption and supported fairness scheduling behavior. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

A:

Inspect site survey spectrum reuse, client PHY capabilities and channel utilization at the configured width. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It does not isolate the cause of the stated incident. The immediate problem concerns airtime fairness across slow clients.

B:

Inspect bidirectional RSSI and SNR, floorplan obstructions, client transmit capabilities and overlap with neighboring cells. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It does not isolate the cause of the stated incident. The immediate problem concerns airtime fairness across slow clients.

D:

Inspect broadcast and multicast rates, client discovery requirements and available WLAN optimization features. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It does not isolate the cause of the stated incident. The immediate problem concerns airtime fairness across slow clients.

Question 762

A WLAN cell's total throughput collapses when one distant station transmits at very low data rates alongside modern clients. Which specific corrective design step best meets the stated campus requirement?

  1. Choose RF channel widths that balance available spectrum, number of APs and target client density.
  2. Tune supported airtime fairness and RF coverage so low-rate stations cannot monopolize the shared channel.
  3. Relocate or add approved APs and rebalance cell size based on coverage and capacity survey data.
  4. Apply supported multicast or broadcast containment and efficient delivery settings without blocking required discovery traffic.

Explanation

Correct Answer

B:

Tune supported airtime fairness and RF coverage so low-rate stations cannot monopolize the shared channel. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

A:

Choose RF channel widths that balance available spectrum, number of APs and target client density. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It would not implement the specifically required change. The immediate problem concerns airtime fairness across slow clients.

C:

Relocate or add approved APs and rebalance cell size based on coverage and capacity survey data. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not implement the specifically required change. The immediate problem concerns airtime fairness across slow clients.

D:

Apply supported multicast or broadcast containment and efficient delivery settings without blocking required discovery traffic. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It would not implement the specifically required change. The immediate problem concerns airtime fairness across slow clients.

Question 763

A WLAN cell's total throughput collapses when one distant station transmits at very low data rates alongside modern clients. Following a targeted change, which acceptance test would most directly demonstrate success?

  1. Verify multiple clients gain fair airtime and application throughput without excluding required low-capability devices.
  2. Verify busy-hour aggregate throughput and retry rates improve under a comparable workload.
  3. Validate stable service on both uplink and downlink during a representative walk-through.
  4. Verify reduced airtime occupancy while necessary DHCP, ARP and service discovery still function.

Explanation

Correct Answer

A:

Verify multiple clients gain fair airtime and application throughput without excluding required low-capability devices. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

B:

Verify busy-hour aggregate throughput and retry rates improve under a comparable workload. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It would not establish that this function actually works. The immediate problem concerns airtime fairness across slow clients.

C:

Validate stable service on both uplink and downlink during a representative walk-through. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not establish that this function actually works. The immediate problem concerns airtime fairness across slow clients.

D:

Verify reduced airtime occupancy while necessary DHCP, ARP and service discovery still function. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It would not establish that this function actually works. The immediate problem concerns airtime fairness across slow clients.

Question 764

A WLAN cell's total throughput collapses when one distant station transmits at very low data rates alongside modern clients. The change fails acceptance. What is the safest targeted restoration action?

  1. Restore the previously accepted channel widths and reuse map if the new configuration increases adjacent-cell interference.
  2. Return to the last working AP location and power settings while retesting a less obstructed candidate site.
  3. Restore the prior permitted broadcast and multicast forwarding if legitimate devices lose discovery capability.
  4. Restore prior airtime scheduling settings if the change harms legitimate client connectivity at cell edges.

Explanation

Correct Answer

D:

Restore prior airtime scheduling settings if the change harms legitimate client connectivity at cell edges. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

A:

Restore the previously accepted channel widths and reuse map if the new configuration increases adjacent-cell interference. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It would not safely roll back the relevant failed change. The immediate problem concerns airtime fairness across slow clients.

B:

Return to the last working AP location and power settings while retesting a less obstructed candidate site. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not safely roll back the relevant failed change. The immediate problem concerns airtime fairness across slow clients.

C:

Restore the prior permitted broadcast and multicast forwarding if legitimate devices lose discovery capability. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It would not safely roll back the relevant failed change. The immediate problem concerns airtime fairness across slow clients.

Question 765

A conference-floor AP spends most airtime serving a few low-rate IoT devices and delays video sessions. Before implementing a remedy, what should the engineer check first?

  1. Review site survey spectrum reuse, client PHY capabilities and channel utilization at the configured width.
  2. Review bidirectional RSSI and SNR, floorplan obstructions, client transmit capabilities and overlap with neighboring cells.
  3. Review per-client PHY rates, airtime consumption and supported fairness scheduling behavior.
  4. Review broadcast and multicast rates, client discovery requirements and available WLAN optimization features.

Explanation

Correct Answer

C:

Review per-client PHY rates, airtime consumption and supported fairness scheduling behavior. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

A:

Review site survey spectrum reuse, client PHY capabilities and channel utilization at the configured width. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It does not isolate the cause of the stated incident. The immediate problem concerns airtime fairness across slow clients.

B:

Review bidirectional RSSI and SNR, floorplan obstructions, client transmit capabilities and overlap with neighboring cells. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It does not isolate the cause of the stated incident. The immediate problem concerns airtime fairness across slow clients.

D:

Review broadcast and multicast rates, client discovery requirements and available WLAN optimization features. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It does not isolate the cause of the stated incident. The immediate problem concerns airtime fairness across slow clients.

Question 766

A conference-floor AP spends most airtime serving a few low-rate IoT devices and delays video sessions. After the root cause is confirmed, which narrowly scoped configuration action should be selected?

  1. Select RF channel widths that balance available spectrum, number of APs and target client density.
  2. Tune supported airtime fairness and RF coverage so low-rate stations cannot monopolize the shared channel for the affected campus deployment.
  3. Relocate or add approved APs and rebalance cell size based on coverage and capacity survey data for the affected campus deployment.
  4. Enforce supported multicast or broadcast containment and efficient delivery settings without blocking required discovery traffic.

Explanation

Correct Answer

B:

Tune supported airtime fairness and RF coverage so low-rate stations cannot monopolize the shared channel for the affected campus deployment. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

A:

Select RF channel widths that balance available spectrum, number of APs and target client density. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It would not implement the specifically required change. The immediate problem concerns airtime fairness across slow clients.

C:

Relocate or add approved APs and rebalance cell size based on coverage and capacity survey data for the affected campus deployment. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not implement the specifically required change. The immediate problem concerns airtime fairness across slow clients.

D:

Enforce supported multicast or broadcast containment and efficient delivery settings without blocking required discovery traffic. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It would not implement the specifically required change. The immediate problem concerns airtime fairness across slow clients.

Question 767

A conference-floor AP spends most airtime serving a few low-rate IoT devices and delays video sessions. A deployment job reports success. Which observed result would actually validate the affected service?

  1. Confirm multiple clients gain fair airtime and application throughput without excluding required low-capability devices.
  2. Confirm busy-hour aggregate throughput and retry rates improve under a comparable workload.
  3. Validate stable service on both uplink and downlink during a representative walk-through for the affected campus deployment.
  4. Confirm reduced airtime occupancy while necessary DHCP, ARP and service discovery still function.

Explanation

Correct Answer

A:

Confirm multiple clients gain fair airtime and application throughput without excluding required low-capability devices. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The result tests actual working behavior, not merely a saved configuration. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

B:

Confirm busy-hour aggregate throughput and retry rates improve under a comparable workload. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It would not establish that this function actually works. The immediate problem concerns airtime fairness across slow clients.

C:

Validate stable service on both uplink and downlink during a representative walk-through for the affected campus deployment. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not establish that this function actually works. The immediate problem concerns airtime fairness across slow clients.

D:

Confirm reduced airtime occupancy while necessary DHCP, ARP and service discovery still function. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It would not establish that this function actually works. The immediate problem concerns airtime fairness across slow clients.

Question 768

A conference-floor AP spends most airtime serving a few low-rate IoT devices and delays video sessions. If the revised setting disrupts users, which controlled rollback would be most relevant?

  1. Reinstate the previously accepted channel widths and reuse map if the new configuration increases adjacent-cell interference.
  2. Return to the last working AP location and power settings while retesting a less obstructed candidate site.
  3. Reinstate the prior permitted broadcast and multicast forwarding if legitimate devices lose discovery capability.
  4. Reinstate prior airtime scheduling settings if the change harms legitimate client connectivity at cell edges.

Explanation

Correct Answer

D:

Reinstate prior airtime scheduling settings if the change harms legitimate client connectivity at cell edges. Wireless airtime is shared by time rather than raw bytes; slow stations can consume disproportionate transmission opportunity. The focused rollback restores a known safe baseline before another change attempt. The decision applies to the described airtime fairness across slow clients situation.

Incorrect Answers

A:

Reinstate the previously accepted channel widths and reuse map if the new configuration increases adjacent-cell interference. This instead concerns channel width for capacity optimization. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. It would not safely roll back the relevant failed change. The immediate problem concerns airtime fairness across slow clients.

B:

Return to the last working AP location and power settings while retesting a less obstructed candidate site. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not safely roll back the relevant failed change. The immediate problem concerns airtime fairness across slow clients. For the incident in this item: A conference-floor AP spends most airtime serving a few low-rate IoT devices and delays video sessions.

C:

Reinstate the prior permitted broadcast and multicast forwarding if legitimate devices lose discovery capability. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It would not safely roll back the relevant failed change. The immediate problem concerns airtime fairness across slow clients.

Question 769

A dense teaching building adopts 80 MHz WLAN channels and performance worsens as neighboring APs contend for the same spectrum. Which investigation would best isolate the immediate network dependency?

  1. Inspect bidirectional RSSI and SNR, floorplan obstructions, client transmit capabilities and overlap with neighboring cells.
  2. Inspect broadcast and multicast rates, client discovery requirements and available WLAN optimization features.
  3. Inspect egress queue occupancy, drop counters and application classifications under representative load.
  4. Inspect site survey spectrum reuse, client PHY capabilities and channel utilization at the configured width.

Explanation

Correct Answer

D:

Inspect site survey spectrum reuse, client PHY capabilities and channel utilization at the configured width. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. The evidence check isolates the relevant prerequisite before a disruptive change. The decision applies to the described channel width for capacity optimization situation.

Incorrect Answers

A:

Inspect bidirectional RSSI and SNR, floorplan obstructions, client transmit capabilities and overlap with neighboring cells. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It does not isolate the cause of the stated incident. The immediate problem concerns channel width for capacity optimization.

B:

Inspect broadcast and multicast rates, client discovery requirements and available WLAN optimization features. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It does not isolate the cause of the stated incident. The immediate problem concerns channel width for capacity optimization.

C:

Inspect egress queue occupancy, drop counters and application classifications under representative load. This instead concerns queue congestion and shaping. QoS queue management controls contention at the egress bottleneck; high interface bandwidth alone does not guarantee low delay under bursts. It does not isolate the cause of the stated incident. The immediate problem concerns channel width for capacity optimization.

Question 770

A dense teaching building adopts 80 MHz WLAN channels and performance worsens as neighboring APs contend for the same spectrum. Which specific corrective design step best meets the stated campus requirement?

  1. Relocate or add approved APs and rebalance cell size based on coverage and capacity survey data.
  2. Apply supported multicast or broadcast containment and efficient delivery settings without blocking required discovery traffic.
  3. Choose RF channel widths that balance available spectrum, number of APs and target client density.
  4. Apply approved scheduling, policing or shaping that protects sensitive traffic while retaining reasonable bulk service.

Explanation

Correct Answer

C:

Choose RF channel widths that balance available spectrum, number of APs and target client density. Increasing width increases potential peak rate but decreases independent channels, so dense WLAN design often prefers more reuse. The proposed configuration targets the stated dependency without broadening unrelated access. The decision applies to the described channel width for capacity optimization situation.

Incorrect Answers

A:

Relocate or add approved APs and rebalance cell size based on coverage and capacity survey data. This instead concerns ap placement and cell-edge design. Good downlink power from an AP cannot compensate for a weak client uplink or severe physical RF obstruction. It would not implement the specifically required change. The immediate problem concerns channel width for capacity optimization.

B:

Apply supported multicast or broadcast containment and efficient delivery settings without blocking required discovery traffic. This instead concerns multicast and broadcast airtime optimization. Broadcast and low-rate multicast consume shared radio airtime across receivers; optimization must preserve essential control and discovery protocols. It would not implement the specifically required change. The immediate problem concerns channel width for capacity optimization.

D:

Apply approved scheduling, policing or shaping that protects sensitive traffic while retaining reasonable bulk service. This instead concerns queue congestion and shaping. QoS queue management controls contention at the egress bottleneck; high interface bandwidth alone does not guarantee low delay under bursts. It would not implement the specifically required change. The immediate problem concerns channel width for capacity optimization.

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