A network technician suspects that a faulty patch cable is causing a user's intermittent connectivity. Which action would BEST test this theory?

Check the switch port statistics for errors

Run a ping test to the default gateway

Replace the patch cable with a known-good cable and observe if the issue persists

A network engineer resolved a complex routing issue that took several hours to diagnose. The engineer wants to ensure that the knowledge gained is not lost. What is the BEST action?

Keep the solution in a personal notebook

Share the solution verbally with colleagues

Do nothing because the issue is resolved

Create a detailed knowledge base article with symptoms, cause, and resolution

A network administrator resolved a recurring DHCP issue by updating the switch configuration. The administrator wants to ensure that future technicians can understand and resolve similar issues quickly. What should the administrator do?

Create a new VLAN for DHCP clients to prevent recurrence

Document the problem, the solution, and the steps taken in the knowledge base

Inform the users that the issue is resolved

Reboot the DHCP server to ensure it is working correctly

After replacing a network interface card (NIC) in a server, the server can ping other devices but cannot be pinged by other devices. You have verified the IP configuration and the NIC drivers are correct. What should you do NEXT to verify full system functionality?

Replace the NIC again because it is likely faulty

Check the server's firewall settings to ensure they allow inbound ICMP

Document the issue and close the ticket

Reboot the server to apply the NIC driver changes

A technician notes that a user cannot access the internet but can access internal resources. Based on this information, which is a probable cause to hypothesize?

The default gateway is down or misconfigured

The user's IP address is invalid

The user's network cable is unplugged

CompTIANetwork+

Domain 5Objective 1

Troubleshooting Methodology N10-009 Practice Questions (Page 2)

Part of the Network troubleshooting domain, which makes up ~15% of our current practice bank. CompTIA does not publish an official question count, but from its 90-minute exam (~35–60 total, ~5–9 in this domain), expect 1–2 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

7concepts

Questions 6–10

6application · medium
A network technician suspects that a faulty patch cable is causing a user's intermittent connectivity. Which action would BEST test this theory?
Select an answer first
7application · medium
A network engineer resolved a complex routing issue that took several hours to diagnose. The engineer wants to ensure that the knowledge gained is not lost. What is the BEST action?
Select an answer first
8application · medium
A network administrator resolved a recurring DHCP issue by updating the switch configuration. The administrator wants to ensure that future technicians can understand and resolve similar issues quickly. What should the administrator do?
Select an answer first
9expert · hard
After replacing a network interface card (NIC) in a server, the server can ping other devices but cannot be pinged by other devices. You have verified the IP configuration and the NIC drivers are correct. What should you do NEXT to verify full system functionality?
Select an answer first
10foundation · easy
A technician notes that a user cannot access the internet but can access internal resources. Based on this information, which is a probable cause to hypothesize?
Select an answer first

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