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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 37

Question 360

A network specialist investigates this evidence: An emergency router patch is delayed because nobody knows which firmware runs at each branch. Which underlying condition BEST explains the observed failure or requirement?

  1. A controlled baseline is not applied consistently.
  2. The logical Layer 3 diagram is outdated.
  3. The change lacks impact analysis and authorized window.
  4. Network software version and support records are missing.

Explanation

Correct Answer

D:

Network software version and support records are missing. Version visibility permits scoped vulnerability remediation.

Incorrect Answers

A:

A controlled baseline is not applied consistently. That does not establish network software version and support records are missing.

B:

The logical Layer 3 diagram is outdated. That does not establish network software version and support records are missing.

C:

The change lacks impact analysis and authorized window. That does not establish network software version and support records are missing.

Question 361

A network team observes: A WAN supplier promises 99.9 percent availability but contracts do not define how downtime is measured. What is the MOST appropriate corrective action or technical decision?

  1. Specify observation windows, exclusions, reporting and remedies in the SLA.
  2. Perform a predictive and post-install site survey with coverage heatmap.
  3. Maintain separate physical cable maps and logical network diagrams linked by identifiers.
  4. Update routed subnet and gateway diagrams from observed configuration.

Explanation

Correct Answer

A:

The sla lacks measurable service definitions.

Incorrect Answers

B:

A wireless site survey measures coverage; it does not define how WAN service availability is measured under the SLA.

C:

Cable and topology diagrams document network paths, but they do not set the SLA observation window, exclusions, or remedies.

D:

Gateway and subnet diagrams describe routing, not the contractual definition of downtime.

Question 362

A network team addresses this situation: A WAN supplier promises 99.9 percent availability but contracts do not define how downtime is measured. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Measure RSSI and throughput in intended scanner locations.
  2. Reconcile monitored outage minutes against the contracted calculation.
  3. Trace actual patch paths and reconcile them with the physical map.
  4. Compare a sampled route table and subnet to the approved diagram.

Explanation

Correct Answer

B:

Reconcile monitored outage minutes against the contracted calculation.

Incorrect Answers

A:

Measure RSSI and throughput in intended scanner locations. That check cannot demonstrate reconcile monitored outage minutes against the contracted calculation.

C:

End-to-end tracing proves the right diagram was used. That check cannot demonstrate reconcile monitored outage minutes against the contracted calculation.

D:

IP routing depends on a route to the destination prefix and a reachable next hop. That check cannot demonstrate reconcile monitored outage minutes against the contracted calculation.

Question 363

A network specialist investigates this evidence: A WAN supplier promises 99.9 percent availability but contracts do not define how downtime is measured. Which underlying condition BEST explains the observed failure or requirement?

  1. Logical routes alone do not represent cable termination paths.
  2. Wireless design relied on desk estimates rather than site measurements.
  3. The SLA lacks measurable service definitions.
  4. The rack elevation and hardware dimensions were never captured.

Explanation

Correct Answer

C:

The SLA lacks measurable service definitions. Availability commitments need defined measurement criteria.

Incorrect Answers

A:

Logical routes alone do not represent cable termination paths.

B:

Wireless design relied on desk estimates rather than site measurements.

D:

The rack elevation and hardware dimensions were never captured. That does not establish the SLA lacks measurable service definitions.

Question 364

A network team observes: A new warehouse floor plan includes metal shelving but no RF survey, and coverage assumptions fail. What is the MOST appropriate corrective action or technical decision?

  1. Specify observation windows, exclusions, reporting and remedies in the SLA.
  2. Maintain separate physical cable maps and logical network diagrams linked by identifiers.
  3. Maintain a labeled cable map linking wall jacks, panel ports and switch interfaces.
  4. Perform a predictive and post-install site survey with coverage heatmap.

Explanation

Correct Answer

D:

RF obstructions affect propagation and client coverage. Wireless design relied on desk estimates rather than site measurements.

Incorrect Answers

A:

Specifying observation windows, exclusions, reporting and remedies in the SLA would not perform a predictive and post-install site survey with coverage heatmap.

B:

Maintaining separate physical cable maps and logical network diagrams linked by identifiers would not perform a predictive and post-install site survey with coverage heatmap.

C:

Maintaining a labeled cable map linking wall jacks, panel ports and switching interfaces would not perform a predictive and post-install site survey with coverage heatmap.

Question 365

A network team addresses this situation: A new warehouse floor plan includes metal shelving but no RF survey, and coverage assumptions fail. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Measure RSSI and throughput in intended scanner locations.
  2. Reconcile monitored outage minutes against the contracted calculation.
  3. Trace jack 2-17 with a toner and compare it to the maintained map.
  4. Trace actual patch paths and reconcile them with the physical map.

Explanation

Correct Answer

A:

Measure RSSI and throughput in intended scanner locations.

Incorrect Answers

B:

Reconcile monitored outage minutes against the contracted calculation. It does not measure RSSI and throughput in intended scanner locations.

C:

A correct trace validates the cable inventory. It does not measure RSSI and throughput in intended scanner locations.

D:

End-to-end tracing proves the right diagram was used. It does not measure RSSI and throughput in intended scanner locations.

Question 366

A network specialist investigates this evidence: A new warehouse floor plan includes metal shelving but no RF survey, and coverage assumptions fail. Which underlying condition BEST explains the observed failure or requirement?

  1. The SLA lacks measurable service definitions.
  2. Wireless design relied on desk estimates rather than site measurements.
  3. Logical routes alone do not represent cable termination paths.
  4. Physical Layer 1 cable records are incomplete.

Explanation

Correct Answer

B:

Wireless design relied on desk estimates rather than site measurements. RF obstructions affect propagation and client coverage.

Incorrect Answers

A:

The SLA lacks measurable service definitions. That does not establish wireless design relied on desk estimates rather than site measurements.

C:

Logical routes alone do not represent cable termination paths. That does not establish wireless design relied on desk estimates rather than site measurements.

D:

Physical Layer 1 cable records are incomplete. That does not establish wireless design relied on desk estimates rather than site measurements.

Question 367

A network team observes: Switches in identical branch models have widely different ACL and management settings after several emergency fixes. What is the MOST appropriate corrective action or technical decision?

  1. Collect running firmware versions into a maintained asset configuration inventory.
  2. Maintain a labeled cable map linking wall jacks, panel ports and switch interfaces.
  3. Version and deploy an approved golden configuration with documented exceptions.
  4. Use centralized IP address management with reservation and conflict detection.

Explanation

Correct Answer

C:

Baseline controls enable drift detection and reproducible setup. A controlled baseline is not applied consistently.

Incorrect Answers

A:

Collecting running firmware versions into a maintained asset configuration inventory would not address the need for version and deploy an approved golden configuration with documented exceptions.

B:

Maintaining a labeled cable map linking wall jacks, panel ports and switching interfaces would not address the need for version and deploy an approved golden configuration with documented exceptions.

D:

Using centralized IP address management with reservation and conflict detection would not address the need for version and deploy an approved golden configuration with documented exceptions.

Question 368

A network team addresses this situation: Switches in identical branch models have widely different ACL and management settings after several emergency fixes. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Compare device version output against the inventory for representative branches.
  2. Inspect the ticket and test the rollback procedure in a safe environment.
  3. Attempt a duplicate allocation through the IPAM workflow.
  4. Diff running configurations against the approved baseline.

Explanation

Correct Answer

D:

Documented deviations reveal configuration drift. version and deploy an approved golden configuration with documented exceptions.

Incorrect Answers

A:

Compare device version output against the inventory for representative branches. That check cannot demonstrate diff running configurations against the approved baseline.

B:

Approved scope and rollback evidence validate change governance.

C:

Attempt a duplicate allocation through the IPAM workflow. That check cannot demonstrate diff running configurations against the approved baseline.

Question 369

A network team observes: A network engineer changes a core router's routing policy during peak traffic without business notification. What is the MOST appropriate corrective action or technical decision?

  1. Use a change request with dependency review, approval, backout and communication.
  2. Maintain network hardware ownership, EOS dates and approved replacement plans.
  3. Collect running firmware versions into a maintained asset configuration inventory.
  4. Update routed subnet and gateway diagrams from observed configuration.

Explanation

Correct Answer

A:

Change control reduces outages caused by uncoordinated modifications. The change lacks impact analysis and authorized window.

Incorrect Answers

B:

Maintaining network hardware ownership, EOS dates and approved replacement plans would not meet the need for a change request with dependency review, approval, backout and communication.

C:

Collecting running firmware versions into a maintained asset configuration inventory would not meet the need for a change request with dependency review, approval, backout and communication.

D:

Updating routed subnet and gateway diagrams from observed configuration would not meet the need for a change request with dependency review, approval, backout and communication.

Question 370

A network team addresses this situation: A network engineer changes a core router's routing policy during peak traffic without business notification. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Cross-check procurement, vendor EOS and discovered devices.
  2. Inspect the ticket and test the rollback procedure in a safe environment.
  3. Compare device version output against the inventory for representative branches.
  4. Compare a sampled route table and subnet to the approved diagram.

Explanation

Correct Answer

B:

Approved scope and rollback evidence validate change governance. Verification of this result involves inspecting the ticket and test the rollback procedure in a safe environment.

Incorrect Answers

A:

Reconciled support status validates asset lifecycle records. It does not inspect the ticket and test the rollback procedure in a safe environment.

C:

Compare device version output against the inventory for representative branches. It does not inspect the ticket and test the rollback procedure in a safe environment.

D:

IP routing depends on a route to the destination prefix and a reachable next hop. It does not inspect the ticket and test the rollback procedure in a safe environment.


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