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Troubleshooting

Diagnosing and fixing issues

5 minutes 5 Questions

Troubleshooting is a systematic approach to identifying and resolving technical problems in computer systems and networks. In CompTIA A+, troubleshooting methodology follows a structured process that helps technicians efficiently diagnose and fix issues. The CompTIA A+ troubleshooting model typica…

Key Concepts 10
Verifying and DocumentingEscalating and CollaboratingEstablishing a Plan of ActionIdentifying Common SymptomsEstablishing a Theory of Probable CauseGathering InformationSeparating Hardware and Software IssuesImplementing the SolutionTesting the Theory to Determine CausePrioritizing Issues
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CompTIA A+ - Troubleshooting Example Questions

Test your knowledge of Troubleshooting

Question 1

A user complains that their laptop is not turning on and getting too hot. What's the most likely cause?

Correct Answer: Overheating due to a malfunctioning fan

The most likely cause of a laptop not turning on and getting too hot is overheating due to a malfunctioning fan. If the laptop's cooling system, primarily the fan, is not working properly, it can lead to excessive heat buildup inside the device. This can cause the laptop to shut down unexpectedly or prevent it from turning on altogether as a safety measure to protect the internal components from damage. A faulty motherboard, while possible, is less likely to be the primary cause of both issues simultaneously. Insufficient power supply would typically prevent the laptop from turning on but would not directly cause overheating. Incorrect BIOS settings may cause boot issues but are unlikely to be responsible for the laptop getting too hot.

Question 2

A user reports their computer shuts down randomly. What is the first step in establishing a theory of probable cause?

Correct Answer: Gather information from the user

Gathering information from the user helps determine possible causes for the issue before taking any action.

Question 3

A user is experiencing slow performance when connecting to the company VPN. The technician checks the VPN configuration settings and notices that the settings were changed by a non-authorized user. After fixing the issue, what should the technician do to document and prevent future unauthorized changes?

Correct Answer: Record the incident in the ticketing system, change the admin password, and implement a policy for managing authentication

The best answer is to record the incident in the ticketing system, change the admin password, and implement a policy for managing authentication. This documents the issue, secures the system by changing the compromised password, and helps prevent future unauthorized changes by establishing an authentication policy. Sending an email to all employees is not an effective solution as it does not directly address the root cause or implement preventative measures. Removing VPN access for all users is an extreme overreaction that would disrupt productivity. Constantly monitoring VPN configurations in real-time is unnecessary and resource-intensive when a well-designed authentication policy can mitigate the risk of unauthorized changes.

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