Practice Quiz

CompTIA 220-801 Certification Practice Test

Category - Essentials

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Which of the following is the best method to remove a flash drive that has been inserted into a USB port?
  1. Restart the computer and then unplug it.
  2. Unplug the drive after using the Safely Remove Hardware icon in the system tray.
  3. Directly unplug the device from the USB port.
  4. Turn off the laptop and then unplug it.
Explanation
Answer - B - Flash drives should be removed from the computer using the Safely Remove Hardware icon in the notification area.

Key Takeaway: A USB drive has a file system, just like a hard drive does. If the power to the machine is cut, or the drive is pulled out during a write, this will result in incomplete data and possibly a corrupted file system on the drive. The "Safely Remove Hardware" bit calls for all programs accessing the drive to complete whatever reads or writes they are performing, as the drive will be removed. When all I/O is complete, the OS removes the drive from its list of usable drives and then tells you it's safe to remove it.
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