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N10-009 Premium File: 768 Questions & Answers

Last Update: Nov 14, 2026

N10-009 Training Course: 240 Video Lectures

N10-009 PDF Study Guide: 128 Pages

$79.99

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CompTIA N10-009 Practice Test 30

Question 290

A network specialist investigates this evidence: A wireless troubleshooting report claims each AP should have an identical BSSID for one corporate SSID. Which underlying condition BEST explains the observed failure or requirement?

  1. Enterprise authentication infrastructure is unavailable for casual guests.
  2. BSSIDs identify individual radios even where SSID names match.
  3. Directional radiation pattern misses clients around the AP.
  4. Shared PSK authentication cannot selectively revoke one user.

Explanation

Correct Answer

B:

BSSIDs identify individual radios even where SSID names match. Clients roam among BSSIDs representing separate AP radios.

Incorrect Answers

A:

Enterprise authentication infrastructure is unavailable for casual guests. That does not establish bSSIDs identify individual radios even where SSID names match.

C:

Directional radiation pattern misses clients around the AP. That does not establish bSSIDs identify individual radios even where SSID names match.

D:

Shared PSK authentication cannot selectively revoke one user. That does not establish bSSIDs identify individual radios even where SSID names match.

Question 291

A network team observes: Two buildings need a long outdoor point-to-point wireless link, but an omnidirectional antenna wastes signal across all directions. What is the MOST appropriate corrective action or technical decision?

  1. Use a planned wireless mesh with capacity and hop constraints.
  2. Use an appropriate omnidirectional antenna or distributed AP plan.
  3. Select aligned directional antennas with compliant power and clear Fresnel zone.
  4. Adjust placement and applicable RTS/CTS or RF cell design.

Explanation

Correct Answer

C:

Directional gain improves link budget along a fixed point-to-point path. Antenna pattern does not concentrate power toward the far endpoint.

Incorrect Answers

A:

Using a planned wireless mesh with capacity and hop constraints would not meet the need for aligned directional antennas with compliant power and clear Fresnel zone.

B:

Using an appropriate omnidirectional antenna or distributed AP plan would not meet the need for aligned directional antennas with compliant power and clear Fresnel zone.

D:

Adjusting placement and applicable RTS/CTS or RF cell design would not meet the need for aligned directional antennas with compliant power and clear Fresnel zone.

Question 292

A network team addresses this situation: Two buildings need a long outdoor point-to-point wireless link, but an omnidirectional antenna wastes signal across all directions. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Test throughput at the farthest hop under expected client load.
  2. Survey signal and roaming across the intended aisle map.
  3. Capture retries and frame timing after a controlled mitigation.
  4. Measure RSSI and throughput while checking alignment.

Explanation

Correct Answer

D:

Sufficient margin validates antenna selection. select aligned directional antennas with compliant power and clear fresnel zone.

Incorrect Answers

A:

Test throughput at the farthest hop under expected client load.

B:

Survey signal and roaming across the intended aisle map.

C:

Lower collision rate supports the hidden-node diagnosis.

Question 293

A network specialist investigates this evidence: Two buildings need a long outdoor point-to-point wireless link, but an omnidirectional antenna wastes signal across all directions. Which underlying condition BEST explains the observed failure or requirement?

  1. Antenna pattern does not concentrate power toward the far endpoint.
  2. Cabled distribution is unavailable at remote coverage locations.
  3. Hidden-station behavior causes collisions at the receiver.
  4. Directional radiation pattern misses clients around the AP.

Explanation

Correct Answer

A:

Antenna pattern does not concentrate power toward the far endpoint. Directional gain improves link budget along a fixed point-to-point path.

Incorrect Answers

B:

Cabled distribution is unavailable at remote coverage locations. That does not establish antenna pattern does not concentrate power toward the far endpoint.

C:

Hidden-station behavior causes collisions at the receiver. That does not establish antenna pattern does not concentrate power toward the far endpoint.

D:

Directional radiation pattern misses clients around the AP. That does not establish antenna pattern does not concentrate power toward the far endpoint.

Question 294

A network team observes: A warehouse AP serves scanners around all sides but a narrow dish antenna covers only one aisle. What is the MOST appropriate corrective action or technical decision?

  1. Select aligned directional antennas with compliant power and clear Fresnel zone.
  2. Use an appropriate omnidirectional antenna or distributed AP plan.
  3. Adjust placement and applicable RTS/CTS or RF cell design.
  4. Use supported WPA3-Enterprise or WPA2-Enterprise with individual 802.1X credentials.

Explanation

Correct Answer

B:

Directional radiation pattern misses clients around the ap.

Incorrect Answers

A:

Selecting aligned directional antennas with compliant power and clear Fresnel zone would not meet the need for an appropriate omnidirectional antenna or distributed AP plan.

C:

Adjusting placement and applicable RTS/CTS or RF cell design would not meet the need for an appropriate omnidirectional antenna or distributed AP plan.

D:

Directional radiation pattern misses clients around the ap. The necessary intervention is to use an appropriate omnidirectional antenna or distributed AP plan.

Question 295

A network team addresses this situation: A warehouse AP serves scanners around all sides but a narrow dish antenna covers only one aisle. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Measure RSSI and throughput while checking alignment.
  2. Revoke one test user while confirming another account remains connected.
  3. Survey signal and roaming across the intended aisle map.
  4. Accept portal and test internet versus internal printer reachability.

Explanation

Correct Answer

C:

Survey signal and roaming across the intended aisle map. Verification of this result involves survey signal and roaming across the intended aisle map.

Incorrect Answers

A:

Measure RSSI and throughput while checking alignment. That check cannot demonstrate survey signal and roaming across the intended aisle map.

B:

Revoke one test user while confirming another account remains connected. That check cannot demonstrate survey signal and roaming across the intended aisle map.

D:

Guest success and internal denial validate both rules. That check cannot demonstrate survey signal and roaming across the intended aisle map.

Question 296

A network specialist investigates this evidence: A warehouse AP serves scanners around all sides but a narrow dish antenna covers only one aisle. Which underlying condition BEST explains the observed failure or requirement?

  1. Antenna pattern does not concentrate power toward the far endpoint.
  2. BSSIDs identify individual radios even where SSID names match.
  3. Enterprise authentication infrastructure is unavailable for casual guests.
  4. Directional radiation pattern misses clients around the AP.

Explanation

Correct Answer

D:

Directional radiation pattern misses clients around the AP. Omnidirectional patterns provide broad azimuth coverage.

Incorrect Answers

A:

Antenna pattern does not concentrate power toward the far endpoint. The missing change involves directional radiation pattern misses clients around the AP.

B:

BSSIDs identify individual radios even where SSID names match. That does not establish directional radiation pattern misses clients around the AP.

C:

Enterprise authentication infrastructure is unavailable for casual guests. That does not establish directional radiation pattern misses clients around the AP.

Question 297

A network team observes: Fifty branch access points have manually diverging RF channels and security settings. What is the MOST appropriate corrective action or technical decision?

  1. Use supported centrally managed lightweight APs and controller policy.
  2. Keep a common enterprise SSID while allowing each radio its distinct BSSID.
  3. Use DFS-compliant operation or plan a suitable non-DFS channel if needed.
  4. Configure an isolated guest SSID with captive portal and restricted routing.

Explanation

Correct Answer

A:

Central RF management enables coordinated channel and security configuration. Autonomous per-ap management lacks central consistency.

Incorrect Answers

B:

Keeping a common enterprise SSID while allowing each radio its distinct BSSID would not meet the need for supported centrally managed lightweight APs and controller policy.

C:

Using DFS-compliant operation or plan a suitable non-DFS channel if needed would not meet the need for supported centrally managed lightweight APs and controller policy.

D:

Configuring an isolated guest SSID with captive portal and restricted routing would not meet the need for supported centrally managed lightweight APs and controller policy.

Question 298

A network team addresses this situation: Fifty branch access points have manually diverging RF channels and security settings. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Observe one client moving across APs and BSSID changes without losing service.
  2. Push a controlled policy change and inspect adoption across the fleet.
  3. Join with the guest credential and verify internal segmentation.
  4. Inspect controller DFS event log and observed channel migration.

Explanation

Correct Answer

B:

Push a controlled policy change and inspect adoption across the fleet.

Incorrect Answers

A:

Changed BSSID with stable service confirms roaming. That check cannot demonstrate push a controlled policy change and inspect adoption across the fleet.

C:

Separate access with blocked internal routes confirms guest design. That check cannot demonstrate push a controlled policy change and inspect adoption across the fleet.

D:

Event and move confirm correct DFS handling. That check cannot demonstrate push a controlled policy change and inspect adoption across the fleet.

Question 299

A network specialist investigates this evidence: Fifty branch access points have manually diverging RF channels and security settings. Which underlying condition BEST explains the observed failure or requirement?

  1. BSSIDs identify individual radios even where SSID names match.
  2. Wide channels reduce usable nonoverlapping channel choices.
  3. Autonomous per-AP management lacks central consistency.
  4. DFS regulation requires vacating radar-sensitive channels.

Explanation

Correct Answer

C:

Autonomous per-AP management lacks central consistency. Central RF management enables coordinated channel and security configuration.

Incorrect Answers

A:

BSSIDs identify individual radios even where SSID names match. That does not establish autonomous per-AP management lacks central consistency.

B:

Wide channels reduce usable nonoverlapping channel choices. That does not establish autonomous per-AP management lacks central consistency.

D:

Regulatory radar protection supersedes static channel preference. That does not establish autonomous per-AP management lacks central consistency.

Question 300

A network team observes: A large temporary event has no Ethernet in remote tents but nearby APs can relay approved wireless backhaul. What is the MOST appropriate corrective action or technical decision?

  1. Select aligned directional antennas with compliant power and clear Fresnel zone.
  2. Segment legacy devices while migrating capable clients to WPA3 on a separate policy-controlled SSID.
  3. Provide an appropriate compatible 5GHz SSID or upgrade clients with 6GHz-capable radios.
  4. Use a planned wireless mesh with capacity and hop constraints.

Explanation

Correct Answer

D:

Mesh APs can relay traffic through wireless backhaul links. Cabled distribution is unavailable at remote coverage locations.

Incorrect Answers

A:

Selecting aligned directional antennas with compliant power and clear Fresnel zone would not meet the need for a planned wireless mesh with capacity and hop constraints.

B:

Segment legacy devices while migrating capable clients to WPA3 on a separate policy-controlled SSID would not meet the need for a planned wireless mesh with capacity and hop constraints.

C:

Providing an appropriate compatible 5GHz SSID or upgrade clients with 6GHz-capable radios would not meet the need for a planned wireless mesh with capacity and hop constraints.


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