Summary
In this chapter, you learned about the identification of network-related risks and pertinent controls. You explored different components of the network, including repeaters, hubs, switches, routers, and firewalls. You also learned about the basic structure of OSI layers and network physical media.
The following are some important topics you covered in this chapter:
- Optical fiber is a thin and flexible piece of fiber made of glass or plastic. Fiber-optic cables are considered to be more secure than copper wire. Fiber optics is the preferred choice for managing long-distance networks and handling high volumes of data. They are not impacted or affected by EMI and have very marginal transmission loss.
- The most stringent and robust configuration setting in firewall rules is “deny all traffic and allow specific traffic” (as opposed to “allow all traffic and deny specific traffic”). This restricts unknown traffic from entering critical systems...