Which of the following statements is true regarding Supervisory Control and Data Acquisition Networks? a. Use of an application proxy, and remote log correlation and analysis are two ways to protect SCADA networks from attacks. b. SCADA devices are becoming less widely used. c. Because they are simple, these networks are not vulnerable to attacks. d. An attack on a SCADA network cannot cause much damage, but may reduce efficiency of the systems they control. Which of the following statements are true regarding DMZs? (Select all that apply.) a. DMZs permit access to specific servers or services by users from outside of an organization. b. DMZs should permit all traffic from the Internet into the DMZ. c. Users from inside the organization can use resources from the DMZ. d. Organizations can operate multiple DMZs as long as they have the same security configuration for each