Book Image

CCNA Routing and Switching 200-125 Certification Guide

By : Lazaro (Laz) Diaz
Book Image

CCNA Routing and Switching 200-125 Certification Guide

By: Lazaro (Laz) Diaz

Overview of this book

Cisco Certified Network Associate (CCNA) Routing and Switching is one of the most important qualifications for keeping your networking skills up to date. CCNA Routing and Switching 200-125 Certification Guide covers topics included in the latest CCNA exam, along with review and practice questions. This guide introduces you to the structure of IPv4 and IPv6 addresses and examines in detail the creation of IP networks and sub-networks and how to assign addresses in the network. You will then move on to understanding how to configure, verify, and troubleshoot layer 2 and layer 3 protocols. In addition to this, you will discover the functionality, configuration, and troubleshooting of DHCPv4. Combined with router and router simulation practice, this certification guide will help you cover everything you need to know in order to pass the CCNA Routing and Switching 200-125 exam. By the end of this book, you will explore security best practices, as well as get familiar with the protocols that a network administrator can use to monitor the network.
Table of Contents (24 chapters)
4
Subnetting in IPv4
21
Mock Test Questions
22
Assessments

Licensing

If you work in any branch of IT, you are going to run into licensing issues. By that, I mean every piece of software you have needs to be licensed, and Cisco is no exception.

If we look back several years, the Cisco IOS 15.0 had no licensing; it was based on an honor code. That may have worked back in the time of Camelot, but those days are gone. So, that means when you order your router or switch, you are also paying for the IOS that comes with it. But you need to choose wisely which IOS you purchase, as not all IOSes have the same features. So, you need to analyze your network requirements and choose an IOS that will meet those needs.

You might be wondering why Cisco is putting this topic into its certification. The answer is simple. A lot of people were on the honor system and, believe it or not, they did not honor it. But not only that, we have so called Cisco engineers...