CompTIA · A+ 220-1202
Troubleshooting PC security issues
A+ 220-1202 · Lesson 22 of 29 · 2:37:33
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In this lesson
Prepare for the CompTIA A+ Core 2 (220-1202) exam. In this lesson: lost network access, desktop alerts and unwanted notifications, fake antivirus alerts, failed OS updates, missing, renamed, or unreadable files, changed system files, pop-ups, redirection, certificate warnings, slow browsers, and the response. Includes three original practice questions.
Preview the topics
- A pop-up claims that the computer has 47 viruses, and offers a cleaner to buy right now, but it does not come from the installed antivirus. What is this?
- The front desk browser always opens an unknown search engine, even after the home page is reset. What should the technician check?
- Every HTTPS site shows a certificate warning on one computer, and its clock shows a date two years in the past. What should be fixed first?