CertQuestUSA
Transportation70+AK/AL/AR +moreConstruction & Safety39+CAEnvironmental99+AL/AR/AZ +moreHealthcare & Clinical196+AL/AR/AZ +moreProfessional Licensing307+AL/AR/AZ +moreEducation & Teacher Certification24+CAAviation & FAA Certification9Finance & Securities Licensing23IT & Cloud Certification6Project Management1Military Entrance Testing1View all sectors ›

CompTIA Network+ (N10-009) Practice Test

First published: September 13, 2026Bank updated: September 13, 2026Published by CertQuestUSA · review process
TL;DR

CompTIA Network+ (N10-009) Practice Test: a 360-question practice bank for the real IT Certification standard, 4 full papers of 90 questions each with no repeats, every question written to the exam sponsor's published content outline.

Where these questions come from

Every question in this bank cites a real source -- primarily N10-009 (100%) of this exam's citations.

Not sure where you stand? Take the free diagnostic — 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.
Start diagnostic
4
full papers, no repeats
90
questions per paper
360
questions in the bank
What this exam covers
5 real sample questions
Wireless users near a microwave oven and cordless phones on 2.4 GHz report slow speeds at lunchtime. What is the cause?
A. Roaming misconfiguration
B. Insufficient coverage
C. Interference
D. Congestion on the wired uplink
Show answer and reasoning

Correct answer: C. Interference

Correct. Non-Wi-Fi devices in 2.4 GHz cause interference. Source: N10-009 objective 5.4, Wireless, Interference.

  • A: Roaming affects moving clients.
  • B: Coverage relates to signal reach.
  • D: This is an RF issue.
Source: N10-009 5.4
What is the final step of the troubleshooting methodology?
A. Implement the solution
B. Verify full system functionality
C. Escalate
D. Document findings, actions, outcomes and lessons learned
Show answer and reasoning

Correct answer: D. Document findings, actions, outcomes and lessons learned

Correct. Documentation throughout and at the end closes the process. Source: N10-009 objective 5.1, Document findings, actions, outcomes, and lessons learned.

  • A: Implementation is step five.
  • B: Verification is step six.
  • C: Escalation is an option within earlier steps.
Source: N10-009 5.1
A user reports that email and file shares both stopped working. Which methodology guidance applies while identifying the problem?
A. Assume both share one cause and fix them together
B. Escalate immediately
C. Approach multiple problems individually
D. Skip gathering information
Show answer and reasoning

Correct answer: C. Approach multiple problems individually

Correct. The methodology says to approach multiple problems individually. Source: N10-009 objective 5.1, Identify the problem, Approach multiple problems individually.

  • A: Assuming a single cause can mislead.
  • B: Escalation is not the first action.
  • D: Gathering information is required.
Source: N10-009 5.1
A technician determines the fix requires changing a core router configuration that is beyond their authority. What does the methodology direct?
A. Escalate as necessary
B. Implement the change anyway
C. Establish a new theory
D. Document and stop
Show answer and reasoning

Correct answer: A. Escalate as necessary

Correct. Implement the solution or escalate as necessary. Source: N10-009 objective 5.1, Implement the solution or escalate as necessary.

  • B: Acting beyond authority violates change control.
  • C: The theory is already confirmed.
  • D: Stopping leaves the problem unresolved.
Source: N10-009 5.1
Two hosts intermittently lose connectivity and the operating system reports an address conflict. What is the issue?
A. ACL block
B. Duplicate IP address
C. Root bridge misplacement
D. Incorrect subnet mask
Show answer and reasoning

Correct answer: B. Duplicate IP address

Correct. Two devices sharing one address conflict at Layer 2/3. Source: N10-009 objective 5.3, Incorrect IP address, Duplicate IP address.

  • A: ACLs block consistently, not intermittently with conflict warnings.
  • C: Spanning tree is Layer 2 topology.
  • D: Mask errors do not produce conflict alerts.
Source: N10-009 5.3

Frequently asked questions

How many questions are on the CertQuestUSA CompTIA Network+ (N10-009) Practice Test practice test?
360 questions total, split into 4 full papers of 90 each with no repeats across papers.
What topics does the CompTIA Network+ (N10-009) Practice Test test cover?
5 domains, with the heaviest weight on Network Troubleshooting (24%), Networking Concepts (23%), and Network Implementation (20%).
Where do CertQuestUSA's CompTIA Network+ (N10-009) Practice Test questions come from?
Primarily N10-009 (100%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free diagnostic for CompTIA Network+ (N10-009) Practice Test?
Yes -- 10 real questions across the exam's domains, no sign-up required, with a domain-by-domain breakdown at the end.
Composing your paper...