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

Need of WAN

To be direct and give you a straightforward answer, yes. WANs are a crucial part of today's business. If you own a business, no matter what it is, you will at least have a web page or some sort of social media to advertise yourself. The days of using the newspaper really does not work anymore. TV and radio are good options, but those also exist online.

So, even the smallest of businesses must have something online, to advertise themselves so their business can grow; that is the ultimate reason we get into a business. If you want to stay current and competitive in today's business world, you must have a presence online and if you have multiple locations for your business and they are located in different locations, you need to have access to those branches through the internet to see what is going on.

With the growth of the internet and the fact that we can...