CompTIA Exam Questions

which of the following is the MOST efficient method to install an operating system?

If a computer does not have an optical drive, which of the following is the MOST efficient
method to install an operating system?

A.
Emergency Restore CD

B.
Floppy disk

C.
USB flash drive

D.
Bluetooth connection

Explanation:

Reference:
http://en.wikipedia.org/wiki/USB_flash_drive