CompTIA ITF+ (FC0-U61) — Question 164

A technician reading workstation security logs notices that an unidentified device is plugged into a USB port several hours a day but is never plugged in when the technician goes to check the machine. File audits reveal nothing unexpected. Which of the following devices is most likely causing this message?

Answer options

• A. Mobile phone
• B. Mouse
• C. Scanner
• D. External hard drive

Correct answer: B

Explanation

The mouse is the most probable device because it is commonly used and often left connected, but may not be noticed when the technician checks. Other devices like mobile phones or external hard drives are less likely to be connected for extended periods without user interaction, and scanners typically require more attention and setup.