A user cannot access the Internet. The PC has a valid IP address. After you replace the network card, the problem persists. According to the troubleshooting methodology, what should you do next?
Establish a new theory, such as checking the network cable or router, and test it.
Inform the user they need a new computer.
Assume that the Internet service is down and wait for it to come back on its own.
Replace the network card again with a different brand.
Because replacing the network card did not restore connectivity, the original theory is disproven. The next step in the CompTIA troubleshooting process is to establish a new probable cause-such as a faulty cable or router-and test that theory. Replacing identical hardware again, telling the user to buy a new computer, or simply waiting do not follow the methodology.
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What is the purpose of establishing a new theory when troubleshooting?
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How do you know if the network cable or router could be the issue?
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What does 'escalating to a higher level of support' mean in troubleshooting?