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The practice questions for N10-009 exam was last updated on 2025-04-26 .

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Question#1

After running a Cat 8 cable using passthrough plugs, an electrician notices that connected cables are experiencing a lot of cross talk.
Which of the following troubleshooting steps should the electrician take first?

A. Inspect the connectors for any wires that are touching or exposed.
B. Restore default settings on the connected devices.
C. Terminate the connections again.
D. Check for radio frequency interference in the area.

Explanation:
Cross talk can often be caused by improper termination of cables. The first step in troubleshooting should be to inspect the connectors for any wires that might be touching or exposed. Ensuring that all wires are correctly seated and that no conductors are exposed can help reduce or eliminate cross talk. This step should be taken before attempting to re-terminate the connections or check for other sources of interference.
Reference: CompTIA Network+ study materials.

Question#2

Which of the following steps in the troubleshooting methodology comes after using a top-to-top bottom examination of the OSI model to determine cause?

A. Test in the theory
B. Establish a plan of action
C. Verify full system functionality
D. Identify the problem

Question#3

Which of the following steps in the troubleshooting methodology includes checking logs for recent changes?

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

Explanation:
Reference: CompTIA Network+ Certification Exam Objectives - Troubleshooting section.

Question#4

A technician is planning an equipment installation into a rack in a data center that practices hot aisle/cold aisle ventilation.
Which of the following directions should the equipment exhaust face when installed in the rack?

A. Sides
B. Top
C. Front
D. Rear

Explanation:
In a data center that practices hot aisle/cold aisle ventilation, equipment should be installed so that the exhaust faces the rear of the rack. This setup ensures that hot air is expelled into the hot aisle, maintaining proper airflow and cooling efficiency.
Hot Aisle/Cold Aisle Configuration: Equipment intake should face the cold aisle where cool air is supplied, and exhaust should face the hot aisle where hot air is expelled.
Cooling Efficiency: Proper orientation of equipment helps maintain an efficient cooling environment by segregating hot and cold air, preventing overheating and improving energy efficiency. Network
Reference: CompTIA Network+ N10-007 Official Certification Guide: Discusses data center design principles, including hot aisle/cold aisle configurations.
Cisco Data Center Design Guide: Provides best practices for data center layout and equipment installation.
Network+ Certification All-in-One Exam Guide: Covers data center environmental controls and ventilation strategies.

Question#5

Which of the following steps in the troubleshooting methodology would be next after putting preventive measures in place?

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

Explanation:
After implementing a solution and putting preventive measures in place, the next step is to verify that the system is functioning correctly. This ensures that the issue has been fully resolved.

Exam Code: N10-009Q & A: 201 Q&AsUpdated:  2025-04-26

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