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

Types of connection used in a WAN

So, now that you have an idea of how WAN data gets from one side to the other and the speed available, you now need to understand the types of connections they use. We basically have three types of connection, as shown in the following diagram, and then we will break down each one:

So, let's break down these types of connections, starting with the following:

  • Dedicated or leased lines: This type of connection is what we would call a point-to-point connection and it is a dedicated connection. It is simple connection going from one CPE through the DCE to another CPE, and you would have bandwidth up to 45 Mbps. But this type of connection is very expensive, as you always have a dedicated line just for you; therefore, you need to know your network. In this type of connection, you would use either the HDLC or PPP encapsulation types. I will discuss...