Which of the following is MOST effective in preventing security breaches on a network?
(Select THREE).

A.
Bandwidth throttling

B.
Eliminate password history

C.
Enable QoS

D.
Antivirus software

E.
User education

F.
Enforced login/logoff hours

Explanation:

Reference:
http://www.esecurityplanet.com/network-security/how-to-prevent-security-breaches-fromknown-vulnerabilities.html