The use of virtualization, cloud computing, mobile devices, wireless, and fiber optics present challenges and opportunities for the security professional charged with securing those networks. Frequently these variations on traditional networking are combined in modern networks. It is important for the security professional to understand the risks as well as the benefits and to be able to recommend the appropriate mitigations that most effectively balance factors such as cost, complexity, security, availability, and confidentiality. Discuss the following: Briefly discuss the following network security defense tools: Firewall Virtual Private Networks and Remote Access Network Access Control Wireless encryption types What are the alternatives available to an small, single-site business for creation of an effective DMZ? Compare and contrast the physical security implications of fiber optic versus traditional copper wired networks. Describe the optimal approach to implementing both public and private wireless in organizations that must be able to support both