DQ 1) Why should an organization consider implementing Role-Based Access Control (RBAC) over Discretionary Access Controls (DAC) or Mandatory Access Controls (MAC)? Provide an example to put into context the differences between the three approaches. DQ 2) Based on the Barr (2009) article, how can RFID technology be applied to providing enterprise security? What are the major factors to consider when employing this technology? DQ 3) Based on the Barr (2010) article, what strategies should be employed to guarantee 100% Web site availability for the Enterprise?