CompTIA A+ Core 2 (220-1002) — Question 451

A technician is in the process of removing a recently discovered Trojan horse application from a user's laptop.
Which of the following should the technician complete to prevent reinfection of the same machine?

Answer options

• A. Reenable Windows System Restore after rebooting the device.
• B. Research the symptoms to identify the threat.
• C. Update the operating system and anti-malware signatures.
• D. Isolate the infected machine from all networks.

Correct answer: C

Explanation

The correct answer, C, emphasizes the need to keep the operating system and anti-malware signatures updated to defend against known vulnerabilities and threats. While options A, B, and D may be important steps in the overall remediation process, they do not directly address the need to secure the system against future infections.