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HP HPE7-A01 Practice Test 89

Question 880

A busy wireless campus has clients on 2.4 GHz when 5 GHz offers cleaner capacity. Which belief about the configuration should the team reject?

  1. Assume nominal aggregate dual-link bandwidth remains unchanged after one link fails
  2. Block all UDP traffic to reduce video usage without distinguishing real-time applications
  3. Disable 2.4 GHz immediately for all devices without checking scanner support
  4. Assume a low five-minute average utilization guarantees zero short-term queue loss

Explanation

Correct Answer

C:

Single-band legacy devices may lose connectivity. Moving compatible users can reduce 2.4 GHz contention.

Incorrect Answers

A:

Losing a physical link reduces available capacity. In this situation, single-band legacy devices may lose connectivity.

B:

Many legitimate conferencing and voice flows use UDP. By contrast, single-band legacy devices may lose connectivity.

D:

Averages can hide momentary saturation. It would not resolve the documented symptom; single-band legacy devices may lose connectivity.

Question 881

A busy wireless campus has clients on 2.4 GHz when 5 GHz offers cleaner capacity. What should be included in the rollout plan to limit a foreseeable failure?

  1. Pilot with mixed hardware and monitor reassociation failures
  2. Size a surviving uplink for the largest critical single-flow demand
  3. Address interference first and then retest application latency
  4. Validate client capability and latency during a phased channel-plan change

Explanation

Correct Answer

A:

Compatibility must shape the capacity plan. Effective steering should improve actual service, not just association counts.

Incorrect Answers

B:

Aggregate capacity does not guarantee per-flow throughput. It would not resolve the documented symptom; compatibility must shape the capacity plan.

C:

A bandwidth upgrade cannot fix the RF collision environment. The relevant technical distinction is that compatibility must shape the capacity plan.

D:

A new width can affect older devices and regulatory choices. By contrast, compatibility must shape the capacity plan.

Question 882

A routing core uses ECMP but its traffic distribution is skewed because most demand is one large flow. What should the network engineer do to address this requirement?

  1. Review minimum/basic rates with measured coverage and legacy client requirements
  2. Coordinate the provider's supported QoS class mapping and local ingress/egress policy
  3. Review per-flow hashing and consider supported aggregation or application-level distribution
  4. Refine application/role classification and adjust shaping only for the intended bulk content

Explanation

Correct Answer

C:

A single flow may not spread across multiple equal-cost paths. The contrast demonstrates the distribution granularity.

Incorrect Answers

A:

Slow management traffic consumes disproportionate airtime in dense cells. Here, however, a single flow may not spread across multiple equal-cost paths.

B:

End-to-end prioritization depends on preserved or translated markings. The relevant technical distinction is that a single flow may not spread across multiple equal-cost paths.

D:

Broad media categories can unintentionally include required live instruction. By contrast, a single flow may not spread across multiple equal-cost paths.

Question 883

A routing core uses ECMP but its traffic distribution is skewed because most demand is one large flow. What should the team inspect to confirm the result?

  1. Measure call jitter, queue drops and marking preservation across wired/wireless hops
  2. Measure interactive latency and backup throughput during representative simultaneous load
  3. Inspect client band choice, channel utilization and user throughput after a trial
  4. Compare next-hop counters for many independent flows versus one transfer

Explanation

Correct Answer

D:

The contrast demonstrates the distribution granularity. A single flow may not spread across multiple equal-cost paths.

Incorrect Answers

A:

Voice quality must improve on the actual congested path. The relevant technical distinction is that the contrast demonstrates the distribution granularity.

B:

Both service classes should remain within business targets. In this situation, the contrast demonstrates the distribution granularity.

C:

Effective steering should improve actual service, not just association counts. Here, however, the contrast demonstrates the distribution granularity.

Question 884

A routing core uses ECMP but its traffic distribution is skewed because most demand is one large flow. Which misconception is most likely to obstruct a correct fix?

  1. Accept every client DSCP value as an approved enterprise priority
  2. Assume one TCP flow will saturate the sum of every ECMP uplink rate
  3. Set an AP's channel width to maximum and assume metal obstruction ceases to matter
  4. Remove all QoS classification so both applications compete without any prioritization

Explanation

Correct Answer

B:

Hash-based load balancing typically pins a flow to one path. A single flow may not spread across multiple equal-cost paths.

Incorrect Answers

A:

Untrusted endpoints can abuse premium queues. In this situation, hash-based load balancing typically pins a flow to one path.

C:

Channel width cannot remove physical shadowing. Here, however, hash-based load balancing typically pins a flow to one path.

D:

Eliminating controls may worsen low-latency traffic service. It would not resolve the documented symptom; hash-based load balancing typically pins a flow to one path.

Question 885

A routing core uses ECMP but its traffic distribution is skewed because most demand is one large flow. What precaution is most important before the change is expanded?

  1. Provide a restricted compatible SSID or managed replacement plan
  2. Limit mis-marking by untrusted clients and document class boundaries
  3. Size a surviving uplink for the largest critical single-flow demand
  4. Address interference first and then retest application latency

Explanation

Correct Answer

C:

Aggregate capacity does not guarantee per-flow throughput. The contrast demonstrates the distribution granularity.

Incorrect Answers

A:

Performance improvements should include a supported transition for older devices. In this situation, aggregate capacity does not guarantee per-flow throughput.

B:

Priority abuse can starve ordinary educational services. By contrast, aggregate capacity does not guarantee per-flow throughput.

D:

A bandwidth upgrade cannot fix the RF collision environment. It would not resolve the documented symptom; aggregate capacity does not guarantee per-flow throughput.

Question 886

A warehouse Wi-Fi network experiences high jitter when forklifts block the direct RF path. Which TWO actions together implement the required change and verify that it works? Choose TWO.

  1. Audit application categories and protect minimum bandwidth for non-voice services
  2. Review antenna placement, multipath and fallback coverage around moving obstructions
  3. Investigate RF SNR, channel contention and client rates instead of assuming spare airtime
  4. Measure SNR, retry rates and application latency along the equipment routes
  5. Apply supported WMM and end-to-end QoS marking for voice while maintaining normal data policy

Explanation

Correct Answers

B:

Temporary shielding can change signal-to-noise and retransmission needs. A moving RF survey captures the conditions that cause jitter.

D:

A moving RF survey captures the conditions that cause jitter. Temporary shielding can change signal-to-noise and retransmission needs.

Incorrect Answers

A:

Excessive priority reservation can starve needed background traffic. By contrast, operational activity changes the propagation environment.

C:

Repeated failed frames consume radio time even when payload throughput is low. It would not resolve the documented symptom; temporary shielding can change signal-to-noise and retransmission needs.

E:

Priority handling can reduce voice delay under contention. The relevant technical distinction is that temporary shielding can change signal-to-noise and retransmission needs.

Question 887

A warehouse Wi-Fi network experiences high jitter when forklifts block the direct RF path. Which check most directly demonstrates the desired network behavior?

  1. Inspect client band choice, channel utilization and user throughput after a trial
  2. Compare combined AP traffic, uplink saturation and queue drops during a busy class
  3. Compare failing client capability against changed WLAN parameters and association logs
  4. Measure SNR, retry rates and application latency along the equipment routes

Explanation

Correct Answer

D:

A moving RF survey captures the conditions that cause jitter. Temporary shielding can change signal-to-noise and retransmission needs.

Incorrect Answers

A:

Effective steering should improve actual service, not just association counts. The relevant technical distinction is that a moving RF survey captures the conditions that cause jitter.

B:

Correlation identifies the wired bottleneck behind a healthy WLAN signal. Here, however, a moving RF survey captures the conditions that cause jitter.

C:

The exact mismatch identifies what optimization broke compatibility. By contrast, a moving RF survey captures the conditions that cause jitter.

Question 888

A warehouse Wi-Fi network experiences high jitter when forklifts block the direct RF path. Which assumption would be most misleading when investigating this situation?

  1. Accept every client DSCP value as an approved enterprise priority
  2. Assume one TCP flow will saturate the sum of every ECMP uplink rate
  3. Block all UDP traffic to reduce video usage without distinguishing real-time applications
  4. Set an AP's channel width to maximum and assume metal obstruction ceases to matter

Explanation

Correct Answer

D:

Channel width cannot remove physical shadowing. Temporary shielding can change signal-to-noise and retransmission needs.

Incorrect Answers

A:

Untrusted endpoints can abuse premium queues. The relevant technical distinction is that channel width cannot remove physical shadowing.

B:

Hash-based load balancing typically pins a flow to one path. Here, however, channel width cannot remove physical shadowing.

C:

Many legitimate conferencing and voice flows use UDP. In this situation, channel width cannot remove physical shadowing.

Question 889

A warehouse Wi-Fi network experiences high jitter when forklifts block the direct RF path. Which safeguard best reduces the deployment risk in this case?

  1. Test with real warehouse movements before finalizing radio power
  2. Size a surviving uplink for the largest critical single-flow demand
  3. Rebalance queues on a pilot interface and verify other application classes
  4. Validate client capability and latency during a phased channel-plan change

Explanation

Correct Answer

A:

Operational activity changes the propagation environment. A moving RF survey captures the conditions that cause jitter.

Incorrect Answers

B:

Aggregate capacity does not guarantee per-flow throughput. In this situation, operational activity changes the propagation environment.

C:

Fixing one class should not starve another. Here, however, operational activity changes the propagation environment.

D:

A new width can affect older devices and regulatory choices. It would not resolve the documented symptom; operational activity changes the propagation environment.

Question 890

A school improves average Wi-Fi throughput but several older laptops stop associating. What is the most appropriate first technical change?

  1. Evaluate narrower channels and improved reuse based on measured co-channel occupancy
  2. Reassess minimum rates, security mode and band/channel compatibility for supported legacy clients
  3. Apply supported WMM and end-to-end QoS marking for voice while maintaining normal data policy
  4. Investigate RF SNR, channel contention and client rates instead of assuming spare airtime

Explanation

Correct Answer

B:

A faster design can exclude hardware without newer radio features. The exact mismatch identifies what optimization broke compatibility.

Incorrect Answers

A:

Wide channels can reduce the number of nonoverlapping cells. In this situation, a faster design can exclude hardware without newer radio features.

C:

Priority handling can reduce voice delay under contention. By contrast, a faster design can exclude hardware without newer radio features.

D:

Repeated failed frames consume radio time even when payload throughput is low. It would not resolve the documented symptom; a faster design can exclude hardware without newer radio features.

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

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