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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 88

Question 870

An office installs a new 6 GHz-capable AP, but an older 802.11ac laptop cannot detect the dedicated 6 GHz-only SSID. Which first diagnostic check is most useful before changing the network?

  1. Capture neighbor report requests and responses during a controlled roam.
  2. Inspect EAP-TLS failure reason and the new server certificate chain.
  3. Compare client association history, AP power and cell-edge data rates.
  4. Inspect the client radio's supported bands and the AP's enabled SSID bands.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: a 5 GHz-only 802.11ac radio cannot discover or join a 6 GHz WLAN. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a location-aware application cannot find good roam candidates although coverage overlaps because neighbor information is missing, but is less direct for the issue at hand: a 5 GHz-only 802.11ac radio cannot discover or join a 6 GHz WLAN.

B:

This would be a reasonable check when an employee WLAN uses EAP-TLS and clients fail immediately after a RADIUS server certificate renewal, but is less direct for the issue at hand: a 5 GHz-only 802.11ac radio cannot discover or join a 6 GHz WLAN.

C:

This would be a reasonable check when the campus WLAN's APs transmit at maximum power, creating very large overlapping cells and sticky client behavior, but is less direct for the issue at hand: a 5 GHz-only 802.11ac radio cannot discover or join a 6 GHz WLAN.

Question 871

A stadium's WLAN uses 80 MHz channels everywhere, producing excessive overlapping BSSs during a sold-out event. Which first diagnostic check is most useful before changing the network?

  1. Inspect antenna type and orientation against a measured site map.
  2. Review channel width, overlap and utilization on neighboring APs.
  3. Inspect the client radio's supported bands and the AP's enabled SSID bands.
  4. Inspect per-AP airtime, retry and application throughput over peak periods.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: very wide channels reduce the number of reusable channel blocks in dense environments. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when an AP is installed with a directional antenna pointed into a concrete wall rather than the intended warehouse aisle, but is less direct for the issue at hand: very wide channels reduce the number of reusable channel blocks in dense environments.

C:

This would be a reasonable check when an office installs a new 6 GHz-capable AP, but an older 802.11ac laptop cannot detect the dedicated 6 GHz-only SSID, but is less direct for the issue at hand: very wide channels reduce the number of reusable channel blocks in dense environments.

D:

This would be a reasonable check when a deployment reports high AP client counts but users complain about slow uploads during busy classes, but is less direct for the issue at hand: very wide channels reduce the number of reusable channel blocks in dense environments.

Question 872

A conference room has healthy RSSI but intermittent audio latency when several nearby clients transmit on the same channel. Which first diagnostic check is most useful before changing the network?

  1. Inspect antenna type and orientation against a measured site map.
  2. Inspect RSN and PMF negotiation in association traces.
  3. Inspect DFS channel events and active regulatory domain settings.
  4. Inspect channel utilization, retries, noise and client SNR together.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: strong RSSI does not rule out busy-channel contention and wireless retransmissions. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when an AP is installed with a directional antenna pointed into a concrete wall rather than the intended warehouse aisle, but is less direct for the issue at hand: strong RSSI does not rule out busy-channel contention and wireless retransmissions.

B:

This would be a reasonable check when an engineer disables protected management frames to support one old handheld despite a WLAN security requirement that mandates PMF, but is less direct for the issue at hand: strong RSSI does not rule out busy-channel contention and wireless retransmissions.

C:

This would be a reasonable check when an AP shows DFS radar events and channels change during business hours, interrupting some clients, but is less direct for the issue at hand: strong RSSI does not rule out busy-channel contention and wireless retransmissions.

Question 873

An AP shows DFS radar events and channels change during business hours, interrupting some clients. Which first diagnostic check is most useful before changing the network?

  1. Inspect roam traces and negotiated AKM or fast-transition elements.
  2. Inspect DFS channel events and active regulatory domain settings.
  3. Inspect EAP-TLS failure reason and the new server certificate chain.
  4. Map BSSID overlap and channel airtime utilization during peak attendance.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: regulated DFS channels require evacuation when radar is detected. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a voice WLAN introduces rapid roaming requirements, but the configuration has no support for the client-compatible 802.11r fast transition mechanism, but is less direct for the issue at hand: regulated DFS channels require evacuation when radar is detected.

C:

This would be a reasonable check when an employee WLAN uses EAP-TLS and clients fail immediately after a RADIUS server certificate renewal, but is less direct for the issue at hand: regulated DFS channels require evacuation when radar is detected.

D:

This would be a reasonable check when an event venue experiences persistent poor throughput after deploying many extra APs in close proximity on unchanged channels, but is less direct for the issue at hand: regulated DFS channels require evacuation when radar is detected.

Question 874

A warehouse handheld disconnects while roaming between APs because its target radios have different SSID security settings. Which first diagnostic check is most useful before changing the network?

  1. Compare client assigned VLAN, DHCP discovery and switch trunk allow list.
  2. Inspect beacon captures and applied WLAN profiles across the relevant AP group.
  3. Compare target and source AP SSID, AKM and security advertisements.
  4. Inspect antenna type and orientation against a measured site map.

Explanation

Correct Answer

C:

This check collects evidence at the layer implicated by the symptom: roaming fails when the target WLAN is not compatible with the client's established security association. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a wireless client can associate to an SSID but never obtains an IPv4 address, while neighboring wired clients obtain DHCP leases, but is less direct for the issue at hand: roaming fails when the target WLAN is not compatible with the client's established security association.

B:

This would be a reasonable check when a security team wants to disable a previously unused SSID but the site still broadcasts it through a second WLAN profile, but is less direct for the issue at hand: roaming fails when the target WLAN is not compatible with the client's established security association.

D:

This would be a reasonable check when an AP is installed with a directional antenna pointed into a concrete wall rather than the intended warehouse aisle, but is less direct for the issue at hand: roaming fails when the target WLAN is not compatible with the client's established security association.

Question 875

A wireless floor gets poor coverage behind dense concrete despite high AP transmit power in the corridor. Which first diagnostic check is most useful before changing the network?

  1. Inspect roam traces and negotiated AKM or fast-transition elements.
  2. Compare AP map positions with physical survey notes and calibration readings.
  3. Capture probe and association exchanges for the failed client.
  4. Measure RSSI, SNR and noise behind the obstructing wall.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: building attenuation and obstruction, not merely configuration, create the coverage hole. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a voice WLAN introduces rapid roaming requirements, but the configuration has no support for the client-compatible 802.11r fast transition mechanism, but is less direct for the issue at hand: building attenuation and obstruction, not merely configuration, create the coverage hole.

B:

This would be a reasonable check when a warehouse deployment needs accurate client location, but APs were installed with no stable coordinate or floor map assignment, but is less direct for the issue at hand: building attenuation and obstruction, not merely configuration, create the coverage hole.

C:

This would be a reasonable check when a client station repeatedly attempts to join a hidden SSID but technicians attribute its failure solely to low signal, but is less direct for the issue at hand: building attenuation and obstruction, not merely configuration, create the coverage hole.

Question 876

A VoIP design attempts to solve poor call quality solely by raising AP power while clients still transmit at weak power levels. Which first diagnostic check is most useful before changing the network?

  1. Compare uplink RSSI/SNR with client-reported downlink RSSI.
  2. Inspect roam traces and negotiated AKM or fast-transition elements.
  3. Inspect actual RADIUS attributes, assigned role and resulting traffic permissions.
  4. Inspect antenna type and orientation against a measured site map.

Explanation

Correct Answer

A:

This check collects evidence at the layer implicated by the symptom: an asymmetric RF link can hear a strong AP even when the AP cannot reliably hear the weaker client. Examine the evidence before choosing the corrective change.

Incorrect Answers

B:

This would be a reasonable check when a voice WLAN introduces rapid roaming requirements, but the configuration has no support for the client-compatible 802.11r fast transition mechanism, but is less direct for the issue at hand: an asymmetric RF link can hear a strong AP even when the AP cannot reliably hear the weaker client.

C:

This would be a reasonable check when a wireless role design assumes connecting to the corporate SSID always grants internal network privileges even when a guest certificate authenticates, but is less direct for the issue at hand: an asymmetric RF link can hear a strong AP even when the AP cannot reliably hear the weaker client.

D:

This would be a reasonable check when an AP is installed with a directional antenna pointed into a concrete wall rather than the intended warehouse aisle, but is less direct for the issue at hand: an asymmetric RF link can hear a strong AP even when the AP cannot reliably hear the weaker client.

Question 877

A campus is migrating staff to WPA3-Enterprise but several devices only support WPA2-Enterprise. Which first diagnostic check is most useful before changing the network?

  1. Inspect AP regulatory settings, antenna gain and configured transmit power.
  2. Inspect channel utilization, retries, noise and client SNR together.
  3. Inspect client supported AKM suites and association failure reasons.
  4. Inspect RF spectrum occupancy and adjacent-channel energy.

Explanation

Correct Answer

C:

This check collects evidence at the layer implicated by the symptom: unsupported authentication and encryption suites prevent association to WPA3-only WLANs. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a retail site uses multiple AP models but a uniform antenna-gain configuration that overstretches permitted EIRP in some areas, but is less direct for the issue at hand: unsupported authentication and encryption suites prevent association to WPA3-only WLANs.

B:

This would be a reasonable check when a conference room has healthy RSSI but intermittent audio latency when several nearby clients transmit on the same channel, but is less direct for the issue at hand: unsupported authentication and encryption suites prevent association to WPA3-only WLANs.

D:

This would be a reasonable check when a site uses overlapping 2.4 GHz channels 1 and 3 believing their numbers are far enough apart, but is less direct for the issue at hand: unsupported authentication and encryption suites prevent association to WPA3-only WLANs.

Question 878

A visitor WLAN sends all guest traffic into a production data VLAN because its role mapping uses the employee default role. Which first diagnostic check is most useful before changing the network?

  1. Trace client packet ingress and tunnel or bridge state on the AP or gateway.
  2. Compare uplink RSSI/SNR with client-reported downlink RSSI.
  3. Inspect actual client role, VLAN and effective access policy after onboarding.
  4. Inspect the client radio's supported bands and the AP's enabled SSID bands.

Explanation

Correct Answer

C:

This check collects evidence at the layer implicated by the symptom: the default post-authentication role bypasses the designed guest isolation policy. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a controller-based WLAN is intended to tunnel client data centrally, but a new AP group forwards it locally due to the wrong forwarding profile, but is less direct for the issue at hand: the default post-authentication role bypasses the designed guest isolation policy.

B:

This would be a reasonable check when a VoIP design attempts to solve poor call quality solely by raising AP power while clients still transmit at weak power levels, but is less direct for the issue at hand: the default post-authentication role bypasses the designed guest isolation policy.

D:

This would be a reasonable check when an office installs a new 6 GHz-capable AP, but an older 802.11ac laptop cannot detect the dedicated 6 GHz-only SSID, but is less direct for the issue at hand: the default post-authentication role bypasses the designed guest isolation policy.

Question 879

An office has a high-density 2.4 GHz WLAN where many IoT sensors use old low basic rates, consuming excessive airtime. Which first diagnostic check is most useful before changing the network?

  1. Compare client association history, AP power and cell-edge data rates.
  2. Inspect EAP-TLS failure reason and the new server certificate chain.
  3. Trace client IP changes and tunnel or mobility state through a roam.
  4. Inspect supported client rates, airtime use and AP retry counters.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: slow basic rates and many management frames consume airtime that higher-rate clients would otherwise use. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when the campus WLAN's APs transmit at maximum power, creating very large overlapping cells and sticky client behavior, but is less direct for the issue at hand: slow basic rates and many management frames consume airtime that higher-rate clients would otherwise use.

B:

This would be a reasonable check when an employee WLAN uses EAP-TLS and clients fail immediately after a RADIUS server certificate renewal, but is less direct for the issue at hand: slow basic rates and many management frames consume airtime that higher-rate clients would otherwise use.

C:

This would be a reasonable check when a six-building WLAN uses the same SSID but places client VLANs into different subnets without planning how real-time applications survive moves, but is less direct for the issue at hand: slow basic rates and many management frames consume airtime that higher-rate clients would otherwise use.

Question 880

A voice WLAN introduces rapid roaming requirements, but the configuration has no support for the client-compatible 802.11r fast transition mechanism. Which first diagnostic check is most useful before changing the network?

  1. Inspect per-AP airtime, retry and application throughput over peak periods.
  2. Inspect roam traces and negotiated AKM or fast-transition elements.
  3. Measure RSSI, noise and client throughput at multiple seating positions.
  4. Capture neighbor report requests and responses during a controlled roam.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: repeated full key exchanges during roaming can add latency beyond voice application tolerance. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a deployment reports high AP client counts but users complain about slow uploads during busy classes, but is less direct for the issue at hand: repeated full key exchanges during roaming can add latency beyond voice application tolerance.

C:

This would be a reasonable check when a video conference room's clients show low RSSI but good signal-to-noise ratio only near the door; the meeting area itself is below the survey target, but is less direct for the issue at hand: repeated full key exchanges during roaming can add latency beyond voice application tolerance.

D:

This would be a reasonable check when a location-aware application cannot find good roam candidates although coverage overlaps because neighbor information is missing, but is less direct for the issue at hand: repeated full key exchanges during roaming can add latency beyond voice application tolerance.