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Last Update: Nov 14, 2026

N10-009 Training Course: 240 Video Lectures

N10-009 PDF Study Guide: 128 Pages

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CompTIA N10-009 Practice Test 29

Question 280

A network team addresses this situation: Dual-band clients crowd 2.4GHz while 5GHz remains lightly used. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Inspect controller DFS event log and observed channel migration.
  2. Review client adapter capability and successful 5GHz association.
  3. Measure aggregate cell throughput and contention after reducing width.
  4. Compare association distribution and throughput after steering.

Explanation

Correct Answer

D:

Migration without coverage loss validates steering.4ghz coverage for legacy devices.

Incorrect Answers

A:

Event and move confirm correct DFS handling. It does not compare association distribution and throughput after steering.

B:

Review client adapter capability and successful 5GHz association. It does not compare association distribution and throughput after steering.

C:

Area throughput validates the dense RF tradeoff.

Question 281

A network specialist investigates this evidence: Dual-band clients crowd 2.4GHz while 5GHz remains lightly used. Which underlying condition BEST explains the observed failure or requirement?

  1. Band choice is not optimized for supported clients.
  2. DFS regulation requires vacating radar-sensitive channels.
  3. Legacy radios cannot discover unsupported 6GHz bands.
  4. Wide channels reduce usable nonoverlapping channel choices.

Explanation

Correct Answer

A:

Band choice is not optimized for supported clients. Capable devices can shift to less-congested 5GHz channels.

Incorrect Answers

B:

Regulatory radar protection supersedes static channel preference. That does not establish band choice is not optimized for supported clients.

C:

Legacy radios cannot discover unsupported 6GHz bands. 6GHz connectivity requires suitable client radio and regulatory support. The missing change involves band choice is not optimized for supported clients.

D:

Wide channels reduce usable nonoverlapping channel choices. That does not establish band choice is not optimized for supported clients.

Question 282

A network team observes: A corporation uses one shared Wi-Fi passphrase for hundreds of employees, making individual revocation impractical. What is the MOST appropriate corrective action or technical decision?

  1. Reduce channel width where dense deployments need more independent channels.
  2. Use supported WPA3-Enterprise or WPA2-Enterprise with individual 802.1X credentials.
  3. Use an appropriate omnidirectional antenna or distributed AP plan.
  4. Keep a common enterprise SSID while allowing each radio its distinct BSSID.

Explanation

Correct Answer

B:

Per-user identity enables central policies and revocation. Shared psk authentication cannot selectively revoke one user.

Incorrect Answers

A:

Reduce channel width where dense deployments need more independent channels would not meet the need for credential management.

C:

Using an appropriate omnidirectional antenna or distributed AP plan would not meet the need for credential management.

D:

Keeping a common enterprise SSID while allowing each radio its distinct BSSID would not meet the need for credential management.

Question 283

A network team addresses this situation: A corporation uses one shared Wi-Fi passphrase for hundreds of employees, making individual revocation impractical. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Measure aggregate cell throughput and contention after reducing width.
  2. Observe one client moving across APs and BSSID changes without losing service.
  3. Revoke one test user while confirming another account remains connected.
  4. Test both client classes and enforce isolation between their networks.

Explanation

Correct Answer

C:

Revoke one test user while confirming another account remains connected.

Incorrect Answers

A:

Area throughput validates the dense RF tradeoff. That check cannot demonstrate revoke one test user while confirming another account remains connected.

B:

Changed BSSID with stable service confirms roaming. That check cannot demonstrate revoke one test user while confirming another account remains connected.

D:

Both classes functioning in their intended policy zones validate migration. That check cannot demonstrate revoke one test user while confirming another account remains connected.

Question 284

A network specialist investigates this evidence: A corporation uses one shared Wi-Fi passphrase for hundreds of employees, making individual revocation impractical. Which underlying condition BEST explains the observed failure or requirement?

  1. Directional radiation pattern misses clients around the AP.
  2. BSSIDs identify individual radios even where SSID names match.
  3. Some legacy devices do not support WPA3 and block instant cutover.
  4. Shared PSK authentication cannot selectively revoke one user.

Explanation

Correct Answer

D:

Shared PSK authentication cannot selectively revoke one user. Per-user identity enables central policies and revocation.

Incorrect Answers

A:

Directional radiation pattern misses clients around the AP. That does not establish shared PSK authentication cannot selectively revoke one user.

B:

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

C:

Some legacy devices do not support WPA3 and block instant cutover.

Question 285

A network team observes: Visitors must accept a network use notice before internet access but should not reach internal printers. What is the MOST appropriate corrective action or technical decision?

  1. Configure an isolated guest SSID with captive portal and restricted routing.
  2. Adjust placement and applicable RTS/CTS or RF cell design.
  3. Use DFS-compliant operation or plan a suitable non-DFS channel if needed.
  4. Use supported centrally managed lightweight APs and controller policy.

Explanation

Correct Answer

A:

Guest policy can control entry while protecting internal segments. Guest access lacks captive acknowledgement and segmentation.

Incorrect Answers

B:

Adjusting placement and applicable RTS/CTS or RF cell design would not configure an isolated guest SSID with captive portal and restricted routing.

C:

Using DFS-compliant operation or plan a suitable non-DFS channel if needed would not configure an isolated guest SSID with captive portal and restricted routing.

D:

Using supported centrally managed lightweight APs and controller policy would not configure an isolated guest SSID with captive portal and restricted routing.

Question 286

A network team addresses this situation: Visitors must accept a network use notice before internet access but should not reach internal printers. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Capture retries and frame timing after a controlled mitigation.
  2. Accept portal and test internet versus internal printer reachability.
  3. Inspect controller DFS event log and observed channel migration.
  4. Push a controlled policy change and inspect adoption across the fleet.

Explanation

Correct Answer

B:

Guest success and internal denial validate both rules.

Incorrect Answers

A:

Lower collision rate supports the hidden-node diagnosis. That check cannot demonstrate accept portal and test internet versus internal printer reachability.

C:

Event and move confirm correct DFS handling. That check cannot demonstrate accept portal and test internet versus internal printer reachability.

D:

Push a controlled policy change and inspect adoption across the fleet. That check cannot demonstrate accept portal and test internet versus internal printer reachability.

Question 287

A network specialist investigates this evidence: Visitors must accept a network use notice before internet access but should not reach internal printers. Which underlying condition BEST explains the observed failure or requirement?

  1. Hidden-station behavior causes collisions at the receiver.
  2. DFS regulation requires vacating radar-sensitive channels.
  3. Guest access lacks captive acknowledgement and segmentation.
  4. Antenna pattern does not concentrate power toward the far endpoint.

Explanation

Correct Answer

C:

Guest access lacks captive acknowledgement and segmentation. Guest policy can control entry while protecting internal segments.

Incorrect Answers

A:

Hidden-station behavior causes collisions at the receiver. That does not establish guest access lacks captive acknowledgement and segmentation.

B:

Regulatory radar protection supersedes static channel preference. That does not establish guest access lacks captive acknowledgement and segmentation.

D:

Antenna pattern does not concentrate power toward the far endpoint. The missing change involves guest access lacks captive acknowledgement and segmentation.

Question 288

A network team observes: A wireless troubleshooting report claims each AP should have an identical BSSID for one corporate SSID. What is the MOST appropriate corrective action or technical decision?

  1. Use a dedicated segmented guest PSK or portal design separate from managed corporate Wi-Fi.
  2. Use supported centrally managed lightweight APs and controller policy.
  3. Use an appropriate omnidirectional antenna or distributed AP plan.
  4. Keep a common enterprise SSID while allowing each radio its distinct BSSID.

Explanation

Correct Answer

D:

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

Incorrect Answers

A:

Using a dedicated segmented guest PSK or portal design separate from managed corporate Wi-Fi would not keep a common enterprise SSID while allowing each radio its distinct BSSID.

B:

Using supported centrally managed lightweight APs and controller policy would not keep a common enterprise SSID while allowing each radio its distinct BSSID.

C:

Using an appropriate omnidirectional antenna or distributed AP plan would not keep a common enterprise SSID while allowing each radio its distinct BSSID.

Question 289

A network team addresses this situation: A wireless troubleshooting report claims each AP should have an identical BSSID for one corporate SSID. 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. Join with the guest credential and verify internal segmentation.
  3. Push a controlled policy change and inspect adoption across the fleet.
  4. Measure retry rate after channel survey and retuning.

Explanation

Correct Answer

A:

Changed BSSID with stable service confirms roaming.

Incorrect Answers

B:

Separate access with blocked internal routes confirms guest design. It does not observe one client moving across APs and BSSID changes without losing service.

C:

Push a controlled policy change and inspect adoption across the fleet. It does not observe one client moving across APs and BSSID changes without losing service.

D:

That test concerns 2.4ghz channel overlap rather than the specific reported condition. Changed BSSID with stable service confirms roaming.

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.


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