By Bob Vachon

Accessing the WAN

CCNA Exploration spouse Guide


Bob Vachon

Rick Graziani


Accessing the WAN, CCNA Exploration significant other Guide is the authentic supplemental textbook for the having access to the WAN path within the Cisco Networking Academy CCNA Exploration curriculum model four. This path discusses the WAN applied sciences and community providers required by way of converged purposes in company networks. The spouse consultant, written and edited via Networking Academy teachers, is designed as a transportable table connection with use every time, at any place. The book’s positive aspects make stronger the fabric within the direction that will help you specialize in very important ideas and set up your learn time for assessments.


New and greater positive factors assist you learn and reach this course:

  • Chapter targets: evaluate middle options via answering the point of interest questions indexed firstly of every bankruptcy.
  • Key phrases: discuss with the up-to-date lists of networking vocabulary brought and switch to the highlighted phrases in context in each one bankruptcy.
  • Glossary: seek advice the all-new entire thesaurus with greater than 250 terms.
  • Check Your knowing questions and solution key: evaluation your readiness with the up to date end-of-chapter questions that fit the fashion of questions you notice at the on-line direction quizzes. the reply key explains each one answer.
  • Challenge questions and actions: try to ace tougher evaluate questions and actions designed to arrange you for the complicated forms of questions it's possible you'll see at the CCNA examination. the reply key explains each one answer.


Bob Vachon is the coordinator of the pc platforms expertise software and teaches networking infrastructure classes at Cambrian university in Sudbury, Ontario, Canada. Bob has labored and taught within the computing device networking and data know-how box for 25 years and is a student graduate of Cambrian College. 


Rick Graziani teaches laptop technology and desktop networking classes at Cabrillo university in Aptos, California. Rick has labored and taught within the computing device networking and data know-how box for 30 years.


How To: search for this icon to check the stairs it's worthwhile to discover ways to practice yes tasks.


Packet Tracer actions: discover networking ideas in actions interspersed all through a few chapters utilizing

Packet Tracer v4.1 built by means of Cisco. The records for those actions are at the accompanying CD-ROM.


Also to be had for the gaining access to the WAN Course

Accessing the WAN,

CCNA Exploration

Labs and research advisor

ISBN-10: 1-58713-201-X

ISBN-13: 978-1-58713-201-8


Companion CD-ROM

The CD-ROM offers many beneficial instruments and data to help your education:

Packet Tracer task workout files

  • A consultant to utilizing a Networker’s magazine booklet
  • Taking Notes: A .txt dossier of the bankruptcy pursuits
  • More IT profession Information
  • Tips on Lifelong studying in Networking


This booklet is a part of the Cisco Networking Academy sequence from Cisco Press. the goods during this sequence help and supplement the Cisco Networking Academy on-line curriculum.

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Sample text

WiMAX: Worldwide Interoperability for Microwave Access (WiMAX) is a new technology that is just beginning to come into use. 16. WiMAX provides high-speed broadband service with wireless access and provides broad coverage like a cell phone network rather than through small Wi-Fi hotspots. WiMAX operates in a similar way to Wi-Fi, but at higher speeds, over greater distances, and for a greater number of users. It uses a network of WiMAX towers that are similar to cell phone towers, as shown in Figure 1-29.

The two are often combined into a single piece of equipment, called the CSU/DSU. The CSU provides termination for the digital signal and ensures connection integrity through error correction and line monitoring. The DSU converts the T-carrier line frames into frames that the LAN can interpret and vice versa. qxp 3/31/08 3:33 PM Page 21 Chapter 1: Introduction to WANs 21 ■ Access server: Concentrates dial-in and dial-out user communications. An access server may have a mixture of analog and digital interfaces and support hundreds of simultaneous users.

The subscriber either owns or leases the CPE. A subscriber, in this context, is a company that arranges for WAN services from a service provider or carrier. ■ Data Communications Equipment (DCE): Also called data circuit-terminating equipment, the DCE consists of devices that put data on the local loop. The DCE primarily provides an interface to connect subscribers to a communication link on the WAN cloud. ■ Data Terminal Equipment (DTE): The customer devices that pass the data from a customer network or host computer for transmission over the WAN.

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