Book Image

CCENT/CCNA: ICND1 100-105 Certification Guide

By : Bekim Dauti
Book Image

CCENT/CCNA: ICND1 100-105 Certification Guide

By: Bekim Dauti

Overview of this book

CCENT is the entry-level certification for those looking to venture into the networking world. This guide will help you stay up-to date with your networking skills. This book starts with the basics and will take you through everything essential to pass the certification exam. It extensively covers IPv4 and IPv6 addressing, IP data networks, switching and routing, network security, and much more—all in some detail. This guide will provide real-world examples with a bunch of hands-on labs to give you immense expertise in important networking tasks, with a practical approach. Each chapter consists of practice questions to help you take up a challenge from what you have procured. This book ends with mock tests with several examples to help you confidently pass the certification. This Certification Guide consists of everything you need to know in order to pass the ICND 1 100-105 Exam, thus obtaining a CCENT certification. However, practicing with real switches and routers or a switch or router simulator will help you succeed.
Table of Contents (18 chapters)
10
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Appendix G: Graphical Network Simulator-3 (GNS3)

Router routing tables

The Routing Information Base (RIB) is a database file stored in RAM that contains all of the information about the routes to directly connected networks and routes to remotely connected networks. As it is explained in this chapter, the routing table plays a decisive role in the router selecting the best path. In addition, other than route information, the routing table may display the metrics of a listed route, too.

Understanding packet forwarding

As you know, each router interface is connected to a particular network. Then, when PC1 sends the packet to PC2, PC1 will consult its routing table; when it determines that PC2 is in the remote network, it sends the packet to the default gateway. In this case...