CompTIA
220-802 · Question #900
220-802 Question #900: Real Exam Question with Answer & Explanation
The correct answer is A: Files not accessed recently may contain a virus.. Real-time antivirus scanning only monitors files that are actively accessed, so dormant or rarely accessed files can harbor malware undetected without periodic full scans.
Question
A virus scanner is running on a computer and scans all files currently in use. Why should a full scan be performed periodically?
Options
- AFiles not accessed recently may contain a virus.
- BA full scan optimizes all files on the hard drive.
- CA full scan resets the archive bit on the file.
- DActive antivirus software only scans the C:\WINDOWS directory.
Explanation
Real-time antivirus scanning only monitors files that are actively accessed, so dormant or rarely accessed files can harbor malware undetected without periodic full scans.
Common mistakes.
- B. Antivirus full scans detect and remove malware; they do not perform any file system optimization or defragmentation.
- C. Resetting the archive bit is a function of backup software, not antivirus scanning.
- D. Active antivirus software monitors file system activity across all directories, not just C:\Windows; this statement is factually incorrect.
Concept tested. Importance of periodic full antivirus scans
Community Discussion
No community discussion yet for this question.