Security Fundamentals

As we all know, security is an essential aspect of the networking domain. Therefore, this module is added to the CCNA Certification exam. The Security Fundamentals module carries a 15% exam weightage. It takes you from the basics of security and types of attacks to create a more secure network. From the beginning of this module, you will understand threats, vulnerabilities, attacks, and mitigation techniques. You will learn how to apply them to protect the network infrastructure. This module also teaches about:
Layer 2 security like DHCP snooping
Dynamic ARP inspection
Port security
Wireless security protocols like WPA, WPA2, WPA3

The IP service domain carries the weightage of 10% in the exam. It makes us aware of NAT’s configuration & verification (Network Address Translation) static and pool and NTP (Network Time Protocol) operating in client and server mode. This module also covers:
DHCP (Dynamic Host Control Protocol)
DNS (Domain Name System)
SMTP (Simple Mail Transfer Protocol)
The functions of FTP in a network

This module gives an insight into how automation leaves an impact on network management. The Automation and Programmability domain carries the exam weightage of 10%. This section is pretty light, but it opens up new topics that were unknown to network engineers. As the network becomes big and complex, it is required to know which traffic is passing through our network. The automation and programmability will help us in doing that. The module also covers:
Characteristics of REST-based APIs (CRUD, HTTP verbs, and data encoding)
How to configure management mechanism like Puppet, Chef, Ansible
Interpreting JSON data
Controller-based networking
Cisco DNA Center enabled device management

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