Get Accessing the WAN CCNA Exploration Companion Guide PDF

By Bob Vachon

Accessing the WAN

CCNA Exploration spouse Guide


Bob Vachon

Rick Graziani


Accessing the WAN, CCNA Exploration significant other Guide is the legit supplemental textbook for the gaining access to the WAN direction within the Cisco Networking Academy CCNA Exploration curriculum model four. This direction discusses the WAN applied sciences and community prone required by means of converged purposes in firm networks. The better half consultant, written and edited via Networking Academy teachers, is designed as a conveyable table connection with use every time, at any place. The book’s good points toughen the cloth within the direction that can assist you concentrate on very important ideas and manage your research time for checks.


New and more desirable positive aspects assist you research and reach this course:

  • Chapter targets: evaluate middle thoughts via answering the focal point questions indexed first and foremost of every bankruptcy.
  • Key phrases: check with 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 realizing 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 path quizzes. the reply key explains each one answer.
  • Challenge questions and actions: try to ace tougher evaluation questions and actions designed to organize you for the complicated forms of questions chances are 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 machine networking and data know-how box for 25 years and is a student graduate of Cambrian College. 


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


How To: search for this icon to review the stairs you should 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 built by way of Cisco. The records for those actions are at the accompanying CD-ROM.


Also on hand for the getting access to the WAN Course

Accessing the WAN,

CCNA Exploration

Labs and learn 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 aid your education:

Packet Tracer job workout files

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


This ebook 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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Additional resources for Accessing the WAN CCNA Exploration Companion Guide

Example text

DSL DSL technology, shown in Figure 1-27, is an always-on connection technology that uses existing twisted-pair telephone lines to transport high-bandwidth data and provides IP services to subscribers. A DSL modem converts an Ethernet signal from the user device into a DSL signal, which is transmitted to the central office. qxp 3/31/08 3:33 PM Page 39 Chapter 1: Introduction to WANs 39 Multiple DSL subscriber lines are multiplexed into a single high-capacity link using a DSL access multiplexer (DSLAM) at the provider location.

Switched virtual circuit (SVC): A VC that is dynamically established on demand and terminated when transmission is complete. Communication over an SVC consists of three phases: circuit establishment, data transfer, and circuit termination. The establishment phase involves creating the VC between the source and destination devices, with SVC entries stored in lookup tables held in memory. Data transfer involves transmitting data between the devices over the VC, and the circuit termination phase involves tearing down the VC between the source and destination devices.

Cable Modem Coaxial cable is widely used in urban areas to distribute television signals. Network access is available from some cable television networks. This allows for greater bandwidth than the conventional telephone local loop. Cable modems provide an always-on connection and a simple installation. Figure 1-28 shows how a subscriber connects a computer or LAN router to the cable modem, which translates the digital signals into the broadband frequencies used for transmitting on a cable television network.

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Accessing the WAN CCNA Exploration Companion Guide by Bob Vachon

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