Which of the following would BEST protect an organization’s confidential data stored on a laptop computer from unauthorized access?

A.
Strong authentication by password

B.
Encrypted hard drives

C.
Multifactor authentication procedures

D.
Network-based data backup

Explanation:
Encryption of the hard disks will prevent unauthorized access to the laptop even when the laptop is lost or stolen. Strong authentication by password can be bypassed by a determined hacker. Multifactor authentication can be bypassed by removal of the hard drive and insertion into another laptop. Network-based data backups do not prevent access but rather recovery from data loss.