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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 89

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.

Question 881

A location-aware application cannot find good roam candidates although coverage overlaps because neighbor information is missing. Which first diagnostic check is most useful before changing the network?

  1. Inspect the client radio's supported bands and the AP's enabled SSID bands.
  2. Review channel width, overlap and utilization on neighboring APs.
  3. Compare target and source AP SSID, AKM and security advertisements.
  4. Capture neighbor report requests and responses during a controlled roam.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: without neighbor guidance a client may scan more widely before selecting a roam target. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

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: without neighbor guidance a client may scan more widely before selecting a roam target.

B:

This would be a reasonable check when a stadium's WLAN uses 80 MHz channels everywhere, producing excessive overlapping BSSs during a sold-out event, but is less direct for the issue at hand: without neighbor guidance a client may scan more widely before selecting a roam target.

C:

This would be a reasonable check when a warehouse handheld disconnects while roaming between APs because its target radios have different SSID security settings, but is less direct for the issue at hand: without neighbor guidance a client may scan more widely before selecting a roam target.

Question 882

An engineer interprets 802.11v BSS transition recommendations as a command that always forces a client onto a chosen AP. Which first diagnostic check is most useful before changing the network?

  1. Check the scanner's supported 802.11 bands and AP radio configuration.
  2. Inspect BSS transition frames and actual association decisions.
  3. Inspect actual RADIUS attributes, assigned role and resulting traffic permissions.
  4. Inspect client supported AKM suites and association failure reasons.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: a BSS transition management request guides client selection but clients may decline. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a warehouse WLAN assigns every radio to 5 GHz, leaving legacy scanners that support only 2.4 GHz unable to join, but is less direct for the issue at hand: a BSS transition management request guides client selection but clients may decline.

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: a BSS transition management request guides client selection but clients may decline.

D:

This would be a reasonable check when a campus is migrating staff to WPA3-Enterprise but several devices only support WPA2-Enterprise, but is less direct for the issue at hand: a BSS transition management request guides client selection but clients may decline.

Question 883

A six-building WLAN uses the same SSID but places client VLANs into different subnets without planning how real-time applications survive moves. Which first diagnostic check is most useful before changing the network?

  1. Inspect beacon captures and applied WLAN profiles across the relevant AP group.
  2. Trace client IP changes and tunnel or mobility state through a roam.
  3. Inspect the client radio's supported bands and the AP's enabled SSID bands.
  4. Inspect RF spectrum occupancy and adjacent-channel energy.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: SSID equality does not itself preserve IP reachability or active sessions across subnet boundaries. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

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: SSID equality does not itself preserve IP reachability or active sessions across subnet boundaries.

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: SSID equality does not itself preserve IP reachability or active sessions across subnet boundaries.

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: SSID equality does not itself preserve IP reachability or active sessions across subnet boundaries.

Question 884

A lab SSID uses a pre-shared password and the organization needs different access per shared IoT device type. Which first diagnostic check is most useful before changing the network?

  1. Inspect actual client role, VLAN and effective access policy after onboarding.
  2. Inspect the actual PSK identity, assigned user role and policy decision.
  3. Inspect radio mode, client capability and OFDMA usage statistics where supported.
  4. Inspect DFS channel events and active regulatory domain settings.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: a single common PSK provides insufficient per-class segmentation without additional controls. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a visitor WLAN sends all guest traffic into a production data VLAN because its role mapping uses the employee default role, but is less direct for the issue at hand: a single common PSK provides insufficient per-class segmentation without additional controls.

C:

This would be a reasonable check when a Wi-Fi 6 AP has 802.11ax clients but an engineer expects OFDMA to increase peak bandwidth of a single long stream automatically, but is less direct for the issue at hand: a single common PSK provides insufficient per-class segmentation without additional controls.

D:

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: a single common PSK provides insufficient per-class segmentation without additional controls.

Question 885

An AP is installed with a directional antenna pointed into a concrete wall rather than the intended warehouse aisle. Which first diagnostic check is most useful before changing the network?

  1. Inspect DFS channel events and active regulatory domain settings.
  2. Inspect antenna type and orientation against a measured site map.
  3. Inspect beacon captures and applied WLAN profiles across the relevant AP group.
  4. Inspect channel assignments, utilization, retry rate and nearby BSSIDs.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: a directional antenna focuses radiated energy in the wrong physical direction. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

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: a directional antenna focuses radiated energy in the wrong physical direction.

C:

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: a directional antenna focuses radiated energy in the wrong physical direction.

D:

This would be a reasonable check when a hospital's staff WLAN has strong signal near APs but frequent retries in a wing where two adjacent APs use the same busy 2.4 GHz channel, but is less direct for the issue at hand: a directional antenna focuses radiated energy in the wrong physical direction.

Question 886

The campus WLAN's APs transmit at maximum power, creating very large overlapping cells and sticky client behavior. Which first diagnostic check is most useful before changing the network?

  1. Compare AP map positions with physical survey notes and calibration readings.
  2. Inspect client supported AKM suites and association failure reasons.
  3. Compare client association history, AP power and cell-edge data rates.
  4. Compare client band capability, selected band and steering-related logs.

Explanation

Correct Answer

C:

This check collects evidence at the layer implicated by the symptom: oversized high-power cells can encourage clients to remain associated beyond a useful data-rate boundary. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

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: oversized high-power cells can encourage clients to remain associated beyond a useful data-rate boundary.

B:

This would be a reasonable check when a campus is migrating staff to WPA3-Enterprise but several devices only support WPA2-Enterprise, but is less direct for the issue at hand: oversized high-power cells can encourage clients to remain associated beyond a useful data-rate boundary.

D:

This would be a reasonable check when a large office wants better distribution of capable clients between 2.4 and 5 GHz but all steer to 2.4 after a new RF policy, but is less direct for the issue at hand: oversized high-power cells can encourage clients to remain associated beyond a useful data-rate boundary.

Question 887

A security team wants to disable a previously unused SSID but the site still broadcasts it through a second WLAN profile. Which first diagnostic check is most useful before changing the network?

  1. Inspect channel assignments, utilization, retry rate and nearby BSSIDs.
  2. Inspect the actual PSK identity, assigned user role and policy decision.
  3. Inspect supported client rates, airtime use and AP retry counters.
  4. Inspect beacon captures and applied WLAN profiles across the relevant AP group.

Explanation

Correct Answer

D:

This check collects evidence at the layer implicated by the symptom: duplicate or inherited WLAN profiles can continue advertising a supposedly retired SSID. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a hospital's staff WLAN has strong signal near APs but frequent retries in a wing where two adjacent APs use the same busy 2.4 GHz channel, but is less direct for the issue at hand: duplicate or inherited WLAN profiles can continue advertising a supposedly retired SSID.

B:

This would be a reasonable check when a lab SSID uses a pre-shared password and the organization needs different access per shared IoT device type, but is less direct for the issue at hand: duplicate or inherited WLAN profiles can continue advertising a supposedly retired SSID.

C:

This would be a reasonable check when an office has a high-density 2.4 GHz WLAN where many IoT sensors use old low basic rates, consuming excessive airtime, but is less direct for the issue at hand: duplicate or inherited WLAN profiles can continue advertising a supposedly retired SSID.

Question 888

A deployment reports high AP client counts but users complain about slow uploads during busy classes. 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 antenna type and orientation against a measured site map.
  3. Inspect channel utilization, retries, noise and client SNR together.
  4. Map BSSID overlap and channel airtime utilization during peak attendance.

Explanation

Correct Answer

A:

This check collects evidence at the layer implicated by the symptom: client count alone does not describe real capacity or whether uplink airtime is overloaded. Examine the evidence before choosing the corrective change.

Incorrect Answers

B:

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: client count alone does not describe real capacity or whether uplink airtime is overloaded.

C:

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: client count alone does not describe real capacity or whether uplink airtime is overloaded.

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: client count alone does not describe real capacity or whether uplink airtime is overloaded.

Question 889

A site uses overlapping 2.4 GHz channels 1 and 3 believing their numbers are far enough apart. Which first diagnostic check is most useful before changing the network?

  1. Compare target and source AP SSID, AKM and security advertisements.
  2. Inspect RF spectrum occupancy and adjacent-channel energy.
  3. Inspect channel assignments, utilization, retry rate and nearby BSSIDs.
  4. Capture probe and association exchanges for the failed client.

Explanation

Correct Answer

B:

This check collects evidence at the layer implicated by the symptom: closely spaced 2.4 GHz channels overlap spectrally and interfere with one another. Examine the evidence before choosing the corrective change.

Incorrect Answers

A:

This would be a reasonable check when a warehouse handheld disconnects while roaming between APs because its target radios have different SSID security settings, but is less direct for the issue at hand: closely spaced 2.4 GHz channels overlap spectrally and interfere with one another.

C:

This would be a reasonable check when a hospital's staff WLAN has strong signal near APs but frequent retries in a wing where two adjacent APs use the same busy 2.4 GHz channel, but is less direct for the issue at hand: closely spaced 2.4 GHz channels overlap spectrally and interfere with one another.

D:

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: closely spaced 2.4 GHz channels overlap spectrally and interfere with one another.

Question 890

A wireless client can associate to an SSID but never obtains an IPv4 address, while neighboring wired clients obtain DHCP leases. 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 the client radio's supported bands and the AP's enabled SSID bands.
  3. Map BSSID overlap and channel airtime utilization during peak attendance.
  4. Measure RSSI, SNR and noise behind the obstructing wall.

Explanation

Correct Answer

A:

This check collects evidence at the layer implicated by the symptom: association success verifies radio access, not correct DHCP transport into the client subnet. Examine the evidence before choosing the corrective change.

Incorrect Answers

B:

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: association success verifies radio access, not correct DHCP transport into the client subnet.

C:

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: association success verifies radio access, not correct DHCP transport into the client subnet.

D:

This would be a reasonable check when a wireless floor gets poor coverage behind dense concrete despite high AP transmit power in the corridor, but is less direct for the issue at hand: association success verifies radio access, not correct DHCP transport into the client subnet.