A user contacts a technician to report issues with unwanted pop-ups appearing on a computer. Additionally, when the user types a search term into the browser, the user is taken to an unexpected search engine. The technician checks the IP configuration of the computer and determines the DNS is set to 8.8.8.8.
Which of the following should the technician perform to determine the cause of the unwanted behavior?
A. Verify any modifications to the hosts file.
B. Flush the DNS records.
C. Install a software-based IDS.
D. Change to a different DNS server.
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The hosts file is used to map hostnames (in other words domains) to IP addresses. Using a hosts file, you can change the IP address that you resolve a given domain name to. This change only affects your own computer without affecting how the domain is resolved worldwide