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HP HPE7-A01 Bundle

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 20

Question 190

A wireless voice call has low RSSI but the WLAN team tries to repair it solely with DSCP priority rules. Which immediate engineering change most directly addresses this issue?

  1. Correct the RF coverage and SNR deficit before expecting QoS to repair missing radio frames.
  2. Assign traffic classes and appropriate queue scheduling so delay-sensitive voice receives protected service.
  3. Raise minimum/basic rates only after validating edge coverage and legacy device support.
  4. Remark or police student traffic at the untrusted edge and trust only authorized classifications.

Explanation

Correct Answer

A:

The underlying issue is that traffic priority cannot compensate for unusable wireless link quality. This intervention addresses that cause directly. A useful result to confirm is: voice packet loss improves after coverage correction while approved QoS remains intact.

Incorrect Answers

B:

This is suited to a different condition, such as when a campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. The reported fault instead arises because traffic priority cannot compensate for unusable wireless link quality.

C:

This is suited to a different condition, such as when a wireless network has high airtime consumption from low legacy data rates despite moderate user counts. The reported fault instead arises because traffic priority cannot compensate for unusable wireless link quality.

D:

This is suited to a different condition, such as when a switch receives ingress traffic marked with elevated priority from untrusted student PCs, starving approved voice traffic. The reported fault instead arises because traffic priority cannot compensate for unusable wireless link quality.

Question 191

A wireless network has high airtime consumption from low legacy data rates despite moderate user counts. Which immediate engineering change most directly addresses this issue?

  1. Examine microbursts and egress buffering at fine time resolution rather than relying on minute-average bandwidth.
  2. Correct the RF coverage and SNR deficit before expecting QoS to repair missing radio frames.
  3. Raise minimum/basic rates only after validating edge coverage and legacy device support.
  4. Preserve or correctly remark authorized real-time media classifications through the campus path.

Explanation

Correct Answer

C:

The underlying issue is that low-rate transmissions consume disproportionate channel airtime for the same payload. This intervention addresses that cause directly. A useful result to confirm is: supported clients sustain required coverage with lower airtime utilization.

Incorrect Answers

A:

This is suited to a different condition, such as when a data center uplink shows burst loss while average utilization stays below 40 percent. The reported fault instead arises because low-rate transmissions consume disproportionate channel airtime for the same payload.

B:

This is suited to a different condition, such as when a wireless voice call has low RSSI but the WLAN team tries to repair it solely with DSCP priority rules. The reported fault instead arises because low-rate transmissions consume disproportionate channel airtime for the same payload.

D:

This is suited to a different condition, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. The reported fault instead arises because low-rate transmissions consume disproportionate channel airtime for the same payload.

Question 192

A data center uplink shows burst loss while average utilization stays below 40 percent. Which immediate engineering change most directly addresses this issue?

  1. Assign traffic classes and appropriate queue scheduling so delay-sensitive voice receives protected service.
  2. Apply a supported admission or capacity policy matched to RF and queue resources.
  3. Raise minimum/basic rates only after validating edge coverage and legacy device support.
  4. Examine microbursts and egress buffering at fine time resolution rather than relying on minute-average bandwidth.

Explanation

Correct Answer

D:

The underlying issue is that short high-rate bursts can overflow queues despite acceptable long-term averages. This intervention addresses that cause directly. A useful result to confirm is: drop spikes decrease and latency remains controlled during peak bursts.

Incorrect Answers

A:

This is suited to a different condition, such as when a campus uplink gives backup traffic equal scheduling precedence to interactive voice and latency rises during backups. The reported fault instead arises because short high-rate bursts can overflow queues despite acceptable long-term averages.

B:

This is suited to a different condition, such as when a campus needs voice admission under congestion but the existing profile guarantees QoS to more calls than available airtime. The reported fault instead arises because short high-rate bursts can overflow queues despite acceptable long-term averages.

C:

This is suited to a different condition, such as when a wireless network has high airtime consumption from low legacy data rates despite moderate user counts. The reported fault instead arises because short high-rate bursts can overflow queues despite acceptable long-term averages.

Question 193

An engineer increases every WLAN AP's transmit power to improve coverage, but client roaming deteriorates with larger overlapping cells. Which immediate engineering change most directly addresses this issue?

  1. Examine microbursts and egress buffering at fine time resolution rather than relying on minute-average bandwidth.
  2. Use a documented combination of classification, scheduler weights and policing where required to protect other service classes.
  3. Use measured cell-size optimization and appropriate AP density instead of indiscriminately increasing power.
  4. Remark or police student traffic at the untrusted edge and trust only authorized classifications.

Explanation

Correct Answer

C:

The underlying issue is that oversized cells and client/AP power asymmetry can reduce airtime and roaming efficiency. This intervention addresses that cause directly. A useful result to confirm is: clients roam to better APs and application performance improves across the floor.

Incorrect Answers

A:

This is suited to a different condition, such as when a data center uplink shows burst loss while average utilization stays below 40 percent. The reported fault instead arises because oversized cells and client/AP power asymmetry can reduce airtime and roaming efficiency.

B:

This is suited to a different condition, such as when a campus link carries video and backups, and strict high-priority queuing lets video consume bandwidth without a configured limit. The reported fault instead arises because oversized cells and client/AP power asymmetry can reduce airtime and roaming efficiency.

D:

This is suited to a different condition, such as when a switch receives ingress traffic marked with elevated priority from untrusted student PCs, starving approved voice traffic. The reported fault instead arises because oversized cells and client/AP power asymmetry can reduce airtime and roaming efficiency.

Question 194

A campus needs voice admission under congestion but the existing profile guarantees QoS to more calls than available airtime. Which immediate engineering change most directly addresses this issue?

  1. Increase capacity or distribute AP traffic according to measured aggregate demand.
  2. Use a documented combination of classification, scheduler weights and policing where required to protect other service classes.
  3. Adjust minimum-rate policy based on actual edge-client capabilities and validated coverage.
  4. Apply a supported admission or capacity policy matched to RF and queue resources.

Explanation

Correct Answer

D:

The underlying issue is that priority tagging cannot create unlimited radio airtime or switching buffer capacity. This intervention addresses that cause directly. A useful result to confirm is: admitted calls meet quality objectives, while excess attempts receive controlled treatment.

Incorrect Answers

A:

This is suited to a different condition, such as when a large class sends video traffic through a 1 Gbps uplink attached to multiple multigigabit APs and the uplink becomes saturated. The reported fault instead arises because priority tagging cannot create unlimited radio airtime or switching buffer capacity.

B:

This is suited to a different condition, such as when a campus link carries video and backups, and strict high-priority queuing lets video consume bandwidth without a configured limit. The reported fault instead arises because priority tagging cannot create unlimited radio airtime or switching buffer capacity.

C:

This is suited to a different condition, such as when a WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. The reported fault instead arises because priority tagging cannot create unlimited radio airtime or switching buffer capacity.

Question 195

A large class sends video traffic through a 1 Gbps uplink attached to multiple multigigabit APs and the uplink becomes saturated. Which immediate engineering change most directly addresses this issue?

  1. Adjust minimum-rate policy based on actual edge-client capabilities and validated coverage.
  2. Apply the approved classification and trust boundary at the access edge for authorized voice devices.
  3. Apply a supported admission or capacity policy matched to RF and queue resources.
  4. Increase capacity or distribute AP traffic according to measured aggregate demand.

Explanation

Correct Answer

D:

The underlying issue is that the uplink throughput ceiling is smaller than the aggregate offered wireless load. This intervention addresses that cause directly. A useful result to confirm is: peak traffic stays within safe utilization with acceptable application latency.

Incorrect Answers

A:

This is suited to a different condition, such as when a WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. The reported fault instead arises because the uplink throughput ceiling is smaller than the aggregate offered wireless load.

B:

This is suited to a different condition, 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. The reported fault instead arises because the uplink throughput ceiling is smaller than the aggregate offered wireless load.

C:

This is suited to a different condition, such as when a campus needs voice admission under congestion but the existing profile guarantees QoS to more calls than available airtime. The reported fault instead arises because the uplink throughput ceiling is smaller than the aggregate offered wireless load.

Question 196

A switch receives ingress traffic marked with elevated priority from untrusted student PCs, starving approved voice traffic. Which immediate engineering change most directly addresses this issue?

  1. Measure latency distribution and QoS queue contention, then control the interfering transfer class.
  2. Remark or police student traffic at the untrusted edge and trust only authorized classifications.
  3. Apply the approved classification and trust boundary at the access edge for authorized voice devices.
  4. Apply a supported admission or capacity policy matched to RF and queue resources.

Explanation

Correct Answer

B:

The underlying issue is that uncontrolled client markings let low-trust devices consume protected QoS queues. This intervention addresses that cause directly. A useful result to confirm is: student traffic stays within its policy class and voice queue service remains stable.

Incorrect Answers

A:

This is suited to a different condition, such as when an application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. The reported fault instead arises because uncontrolled client markings let low-trust devices consume protected QoS queues.

C:

This is suited to a different condition, 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. The reported fault instead arises because uncontrolled client markings let low-trust devices consume protected QoS queues.

D:

This is suited to a different condition, such as when a campus needs voice admission under congestion but the existing profile guarantees QoS to more calls than available airtime. The reported fault instead arises because uncontrolled client markings let low-trust devices consume protected QoS queues.

Question 197

A high-density WLAN has a large number of associated idle devices; an operator assumes association count alone proves capacity overload. Which immediate engineering change most directly addresses this issue?

  1. Preserve or correctly remark authorized real-time media classifications through the campus path.
  2. Apply a supported admission or capacity policy matched to RF and queue resources.
  3. Remark or police student traffic at the untrusted edge and trust only authorized classifications.
  4. Correlate channel airtime, retry rate, traffic mix and per-client throughput before scaling APs.

Explanation

Correct Answer

D:

The underlying issue is that idle associations consume a different resource profile than active airtime-intensive clients. This intervention addresses that cause directly. A useful result to confirm is: capacity decisions follow measured airtime and service performance rather than raw client counts.

Incorrect Answers

A:

This is suited to a different condition, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. The reported fault instead arises because idle associations consume a different resource profile than active airtime-intensive clients.

B:

This is suited to a different condition, such as when a campus needs voice admission under congestion but the existing profile guarantees QoS to more calls than available airtime. The reported fault instead arises because idle associations consume a different resource profile than active airtime-intensive clients.

C:

This is suited to a different condition, such as when a switch receives ingress traffic marked with elevated priority from untrusted student PCs, starving approved voice traffic. The reported fault instead arises because idle associations consume a different resource profile than active airtime-intensive clients.

Question 198

A campus link carries video and backups, and strict high-priority queuing lets video consume bandwidth without a configured limit. Which immediate engineering change most directly addresses this issue?

  1. Use a documented combination of classification, scheduler weights and policing where required to protect other service classes.
  2. Use measured cell-size optimization and appropriate AP density instead of indiscriminately increasing power.
  3. Increase capacity or distribute AP traffic according to measured aggregate demand.
  4. Correlate channel airtime, retry rate, traffic mix and per-client throughput before scaling APs.

Explanation

Correct Answer

A:

The underlying issue is that unlimited strict priority may starve lower-priority but necessary traffic under sustained load. This intervention addresses that cause directly. A useful result to confirm is: critical media performs well while backup and management classes retain required bandwidth.

Incorrect Answers

B:

This is suited to a different condition, such as when an engineer increases every WLAN AP's transmit power to improve coverage, but client roaming deteriorates with larger overlapping cells. The reported fault instead arises because unlimited strict priority may starve lower-priority but necessary traffic under sustained load.

C:

This is suited to a different condition, such as when a large class sends video traffic through a 1 Gbps uplink attached to multiple multigigabit APs and the uplink becomes saturated. The reported fault instead arises because unlimited strict priority may starve lower-priority but necessary traffic under sustained load.

D:

This is suited to a different condition, such as when a high-density WLAN has a large number of associated idle devices; an operator assumes association count alone proves capacity overload. The reported fault instead arises because unlimited strict priority may starve lower-priority but necessary traffic under sustained load.

Question 199

A WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. Which immediate engineering change most directly addresses this issue?

  1. Preserve or correctly remark authorized real-time media classifications through the campus path.
  2. Correlate channel airtime, retry rate, traffic mix and per-client throughput before scaling APs.
  3. Adjust minimum-rate policy based on actual edge-client capabilities and validated coverage.
  4. Examine microbursts and egress buffering at fine time resolution rather than relying on minute-average bandwidth.

Explanation

Correct Answer

C:

The underlying issue is that a raised mandatory/basic rate can prevent distant or legacy clients from maintaining reliable associations. This intervention addresses that cause directly. A useful result to confirm is: edge clients stay associated and achieve the defined minimum service without excessive retries.

Incorrect Answers

A:

This is suited to a different condition, such as when a video conferencing application uses DSCP AF41, but a policy rewrites all traffic to best effort at the distribution layer. The reported fault instead arises because a raised mandatory/basic rate can prevent distant or legacy clients from maintaining reliable associations.

B:

This is suited to a different condition, such as when a high-density WLAN has a large number of associated idle devices; an operator assumes association count alone proves capacity overload. The reported fault instead arises because a raised mandatory/basic rate can prevent distant or legacy clients from maintaining reliable associations.

D:

This is suited to a different condition, such as when a data center uplink shows burst loss while average utilization stays below 40 percent. The reported fault instead arises because a raised mandatory/basic rate can prevent distant or legacy clients from maintaining reliable associations.

Question 200

An application experiences 20 ms average latency but bursts to 250 ms during each storage transfer, causing user complaints. Which immediate engineering change most directly addresses this issue?

  1. Apply a supported admission or capacity policy matched to RF and queue resources.
  2. Measure latency distribution and QoS queue contention, then control the interfering transfer class.
  3. Examine microbursts and egress buffering at fine time resolution rather than relying on minute-average bandwidth.
  4. Adjust minimum-rate policy based on actual edge-client capabilities and validated coverage.

Explanation

Correct Answer

B:

The underlying issue is that an acceptable mean obscures severe queueing spikes correlated with bulk traffic. This intervention addresses that cause directly. A useful result to confirm is: high-percentile latency and jitter remain within application requirements during transfer windows.

Incorrect Answers

A:

This is suited to a different condition, such as when a campus needs voice admission under congestion but the existing profile guarantees QoS to more calls than available airtime. The reported fault instead arises because an acceptable mean obscures severe queueing spikes correlated with bulk traffic.

C:

This is suited to a different condition, such as when a data center uplink shows burst loss while average utilization stays below 40 percent. The reported fault instead arises because an acceptable mean obscures severe queueing spikes correlated with bulk traffic.

D:

This is suited to a different condition, such as when a WLAN operator sees clients reconnect every few minutes after aggressive radio minimum-rate changes, despite good aggregate throughput. The reported fault instead arises because an acceptable mean obscures severe queueing spikes correlated with bulk traffic.