Download Accessing the WAN CCNA Exploration Companion Guide by Bob Vachon PDF

By Bob Vachon

Accessing the WAN

CCNA Exploration better half Guide


Bob Vachon

Rick Graziani


Accessing the WAN, CCNA Exploration significant other Guide is the legit 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 via converged purposes in company networks. The spouse advisor, written and edited by way of Networking Academy teachers, is designed as a transportable table connection with use each time, wherever. The book’s beneficial properties make stronger the fabric within the direction that will help you concentrate on very important thoughts and manage your examine time for checks.


New and enhanced gains assist you learn and achieve this course:

  • Chapter targets: evaluate middle options via answering the point of interest questions indexed firstly of every bankruptcy.
  • Key phrases: seek advice from the up to date lists of networking vocabulary brought and switch to the highlighted phrases in context in every one bankruptcy.
  • Glossary: seek advice the all-new accomplished thesaurus with greater than 250 terms.
  • Check Your figuring out questions and resolution key: overview your readiness with the up to date end-of-chapter questions that fit the fashion of questions you spot at the on-line direction quizzes. the reply key explains every one answer.
  • Challenge questions and actions: attempt to ace tougher assessment questions and actions designed to organize you for the advanced types of questions you may see at the CCNA examination. the reply key explains each one answer.


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


Rick Graziani teaches machine technology and machine networking classes at Cabrillo university in Aptos, California. Rick has labored and taught within the machine networking and knowledge know-how box for 30 years.


How To: search for this icon to review the stairs it's essential to discover ways to practice definite tasks.


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

Packet Tracer v4.1 constructed via Cisco. The records for those actions are at the accompanying CD-ROM.


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

Accessing the WAN,

CCNA Exploration

Labs and examine consultant

ISBN-10: 1-58713-201-X

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


Companion CD-ROM

The CD-ROM presents many helpful instruments and data to help your education:

Packet Tracer job workout files

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


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

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Extra resources for Accessing the WAN CCNA Exploration Companion Guide

Example text

For example, all the engineering staff are on one LAN, and the marketing staff is on another LAN. These multiple LANs are joined to create a company-wide network, or campus, which spans several floors of the building. Figure 1-3 shows Span Engineering’s expanded campus LAN. The business now has in-house IT staff to support and maintain the network. The network includes servers for e-mail, data transfer and file storage, web-based productivity tools, and applications. The network includes a company intranet to provide in-house documents and information to employees.

Two types of VCs exist: ■ Permanent virtual circuit (PVC): A permanently established virtual circuit that consists of one mode: data transfer. PVCs are used in situations in which data transfer between devices is constant. PVCs decrease the bandwidth use associated with establishing and terminating VCs, but they increase costs because of constant virtual circuit availability. PVCs generally are configured by the service provider when an order is placed for service. ■ Switched virtual circuit (SVC): A VC that is dynamically established on demand and terminated when transmission is complete.

Faster modems, such as cable modems and DSL modems, transmit using higher broadband frequencies. ■ CSU/DSU: Digital lines, such as T1 and T3 carrier lines, require a channel service unit (CSU) and a data service unit (DSU). 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.

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