220-1102 Question #591: Real Exam Question with Answer & Explanation

Question

A user clicked on a link in an email and was redirected to a web page. Now, some commonly used websites are not accessible. A technician confirms that other users are not experiencing the same issue. Which of the following steps should the technician take next to properly identify the issue?

Options

• ACheck the hosts file.
• BReview the laptop's IP settings
• CEnable the Windows Firewall.
• DVerify if the wireless router is functioning.

Explanation

The issue of specific websites being inaccessible only on one user's machine after clicking an email link strongly suggests a local DNS resolution compromise, making checking the hosts file the next logical step.

Common mistakes.

• B. Reviewing IP settings is generally a first step for no network connectivity, but specific website inaccessibility while others work indicates a DNS or application-layer issue, not a fundamental IP configuration problem.
• C. Enabling the Windows Firewall might prevent access to all network resources or specific ports, but it's unlikely to selectively block only 'some commonly used websites' in this manner, and it should already be enabled for security.
• D. If the wireless router was not functioning, other users would also experience network issues, and all websites, not just 'some commonly used ones,' would be inaccessible on the affected laptop.

Concept tested. Troubleshooting DNS resolution and malware effects

Reference. https://learn.microsoft.com/en-us/troubleshoot/windows-client/networking/hosts-file-precedence

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