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)

Ethernet communication technology

Today, Ethernet is the communication technology that is widely used in LANs. Ethernet operates in the physical layer and data link layer of the OSI reference model. Thus, it defines both Layer 1 technologies and Layer 2 protocols. The data on an Ethernet network is carried on by a frame.

Ethernet history

The merits for the invention of the Ethernet belong to Dr. Robert Metcalfe, who in 1973 while working at the Xerox Palo Alto Research Center (PARC) wrote a memo in which he described his finding. Metcalfe had built an Ethernet network system to interconnect workstations with laser printers, thus making it possible to transfer data up to 1 Mbps. Undoubtedly, being convinced of the potential...