Summary
In this chapter, you learned about the roles and functions of key network components, such as routers, which use IP addresses to forward packets to their destinations; Layer 2 switches, which manage the forwarding of frames and use MAC addresses to determine their forwarding decisions; and even Layer 3 switches, which perform both Layer 2 and Layer 3 switching and routing functions.
Furthermore, you’ve learned how NGFW and IPS solutions enhance the network security of organizations. You also gained a better understanding of their placement within a network topology. Additionally, you’ve discovered how various controllers, such as Cisco DNA, assist with network management and automation, while Cisco WLCs provide centralized management of a wireless network architecture.
Lastly, you’ve learned the function of each layer of the OSI and TCP/IP network models and what occurs as application data travels between a sender and a destination host over a network...
