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

Global configuration commands

At this point, we have covered the basics of navigating through the CLI, show commands, verifying connectivity, and how you would connect to the router or switch. It is time to start the configuration. Even though we are going to focus on global configuration commands, I want to show you a guideline for your certification—what commands you should know. But bear in mind this order is not set in stone, it's a guideline which is provided in R1 configuration.

The following topology is what we are going to be using for our configurations for the majority of our configuration examples:

Here is the R1 configuration:

    >ENABLE  (command to get to privilege mode)
    #CONFIG T  (command to get to global configuration)
    (CONFIG)#HOSTNAME R1 (command to give the router a hostname)
    R1(CONFIG)#ENABLE PASSWORD CISCO (command to configure...