CompTIA
220-1002 · Question #668
220-1002 Question #668: Real Exam Question with Answer & Explanation
The correct answer is A: Clear the DNS cache and check the hosts file.. Being redirected to a completely different website instead of the intended one is a classic indicator of DNS cache poisoning or a modified hosts file, both of which should be investigated first.
Question
A user is having trouble accessing websites on a computer. A technician troubleshoots and tries to access a site the user typically visits but is instead presented with a completely different site. Which of the fallowing should the technician do NEXT?
Options
- AClear the DNS cache and check the hosts file.
- BVerify the default gateway settings are correct.
- CEnsure the outbound firewall rules are accurate.
- DConfigure the workstation for IPV6.
Explanation
Being redirected to a completely different website instead of the intended one is a classic indicator of DNS cache poisoning or a modified hosts file, both of which should be investigated first.
Common mistakes.
- B. An incorrect default gateway would affect all network connectivity broadly, not selectively redirect one specific website to a different destination.
- C. Outbound firewall rule issues would block access to a site entirely rather than redirect the user to a different website.
- D. Configuring IPv6 is unrelated to DNS poisoning or hosts file manipulation and would have no effect on a redirection issue.
Concept tested. DNS cache poisoning and hosts file hijacking detection
Reference. https://learn.microsoft.com/en-us/windows-server/networking/dns/troubleshoot/troubleshoot-dns-client
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