CompTIA Network+ Practice Test for Subdomain 5.1 #02

Welcome to today’s CompTIA Network+ practice test!

This practice test uses our new UI!

Today’s practice test is based on Subdomain 5.1 (Explain the troubleshooting methodology) from the CompTIA Network+ N10-009 objectives.

This beginner-level practice test is inspired by the CompTIA Network+ (N10-009) exam and is designed to help you reinforce key networking concepts on a daily basis.

These questions are not official exam questions, nor are they brain dumps, but they reflect topics and scenarios relevant to the Network+ certification. Use them to test your knowledge, identify areas for improvement, and build daily cybersecurity habits.

Note: CompTIA and Network+ are registered trademarks of CompTIA. This content is not affiliated with or endorsed by CompTIA.

To choose CompTIA Network+ practice tests based on specific domains/subdomains, click that link.

CompTIA Network+ Practice Test of the Day 260529

10 questions • Single best answer

Question 1

A network technician at a financial services firm is responding to intermittent connectivity reports. After identifying the problem and gathering information from users, he formulates a hypothesis about the cause. According to the CompTIA troubleshooting methodology, what is the NEXT step after establishing a theory of probable cause?

A. Test the theory to determine the cause B. Implement the solution C. Establish a plan of action D. Document findings and outcomes

Question 2

During a network outage, a technician considers several explanations for why traffic is not flowing based on recent changes and reported symptoms. She narrows the issue down to a few likely candidates. Which step of the troubleshooting methodology is she currently performing?

A. Identify the problem B. Establish a theory of probable cause C. Establish a plan of action D. Test the theory

Question 3

A technician resolved a network issue by replacing a faulty PoE switch. Users confirm that connectivity has been restored across the affected floor. What should the technician do as the final step in the troubleshooting process?

A. Verify full system functionality B. Implement the solution or escalate C. Document findings, actions, and outcomes D. Establish a plan of action

Question 4

A junior technician isolates a network problem but finds it requires changes to the core routing infrastructure that are outside her authority to modify. The issue is impacting multiple business-critical applications. What is the correct next action according to the troubleshooting methodology?

A. Test a temporary workaround B. Document the issue and close the ticket C. Implement the fix independently and verify D. Escalate to a senior technician or engineer

Question 5

A network engineer receives reports of slow application performance across several departments. She interviews affected users, reviews the change management log, and checks network monitoring dashboards for alerts. Which step of the troubleshooting methodology is she performing?

A. Establish a theory of probable cause B. Identify the problem C. Test the theory D. Establish a plan of action

Question 6

After replacing a failed switch at a remote site, a technician pings endpoints across multiple VLANs, verifies application access, and confirms that VoIP calls are completing successfully. Before closing the ticket, which troubleshooting step is the technician performing?

A. Verify full system functionality and implement preventive measures B. Establish a plan of action C. Document findings and outcomes D. Test the theory to determine the cause

Question 7

After confirming that a misconfigured access control list is blocking traffic, a technician determines the exact steps needed to resolve the issue and schedules a maintenance window to minimize user impact. What troubleshooting step is this?

A. Implement the solution or escalate B. Test the theory to determine the cause C. Establish a plan of action to resolve the problem D. Verify full system functionality

Question 8

A technician suspects a DNS misconfiguration is causing name resolution failures across the site. She changes the DNS server address on a single test workstation to point to a known-good server and confirms that resolution succeeds. Which troubleshooting step is being performed?

A. Implement the solution B. Establish a plan of action C. Verify full system functionality D. Test the theory to determine the cause

Question 9

A network engineer applies a fix during a maintenance window but finds the connectivity issue persists. She determines that her original theory was incorrect and the root cause may be more complex. What should she do next?

A. Document the failed attempt and close the ticket B. Re-establish a new theory or escalate as appropriate C. Proceed directly to establishing a new plan of action D. Verify full system functionality and close the change request

Question 10

A network administrator is gathering details about a reported connectivity issue. She asks users when the problem started, what changed recently on their systems, and whether the issue affects only certain users. What troubleshooting technique is she applying?

A. Bottom-up OSI layer approach B. Substitution testing on known-good hardware C. Questioning users to gather symptom information D. Divide and conquer network isolation

CompTIA Network+ Practice Test for Subdomain 5.1 #02

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