By Bob Vachon
Having access to the WAN CCNA Exploration better half advisor Bob Vachon Rick Graziani gaining access to the WAN, CCNA Exploration better half advisor is the reputable supplemental textbook for the getting access to the WAN direction within the Cisco Networking Academy CCNA Exploration curriculum model four. This path discusses the WAN applied sciences and community prone required by means of converged functions in firm networks. The better half advisor, written and edited by way of Networking Academy teachers, is designed as a conveyable table connection with use each time, wherever. The book’s beneficial properties make stronger the cloth within the direction that can assist you specialise in vital options and manage your learn time for checks. New and stronger beneficial properties assist you research and reach this path: bankruptcy ambitions: evaluation center recommendations via answering the point of interest questions indexed initially of every bankruptcy. keywords: consult with the up-to-date lists of networking vocabulary brought and switch to the highlighted phrases in context in every one bankruptcy. word list: seek advice the all-new finished thesaurus with greater than 250 phrases. payment Your realizing questions and resolution key: review 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 each one resolution. problem questions and actions: attempt to ace more difficult evaluation questions and actions designed to arrange you for the advanced kinds of questions chances are you'll see at the CCNA examination. the reply key explains each one solution. Bob Vachon is the coordinator of the pc structures expertise software and teaches networking infrastructure classes at Cambrian university in Sudbury, Ontario, Canada. Bob has labored and taught within the laptop networking and knowledge expertise box for 25 years and is a pupil graduate of Cambrian College. Rick Graziani teaches computing device technological know-how and machine networking classes at Cabrillo university in Aptos, California. Rick has labored and taught within the machine networking and knowledge expertise box for 30 years. how you can: search for this icon to review the stairs you might want to learn how to practice definite initiatives. Packet Tracer actions: discover networking ideas in actions interspersed all through a few chapters utilizing Packet Tracer v4.1 built through Cisco. The documents for those actions are at the accompanying CD-ROM. additionally on hand for the having access to the WAN direction getting access to the WAN, CCNA Exploration Labs and examine consultant ISBN-10: 1-58713-201-X ISBN-13: 978-1-58713-201-8 better half CD-ROM The CD-ROM offers many helpful instruments and knowledge to help your schooling: Packet Tracer task workout documents A advisor to utilizing a Networker’s magazine book Taking Notes: A .txt dossier of the bankruptcy targets extra IT occupation details pointers 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 help and supplement the Cisco Networking Academy on-line curriculum.
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Gaining access to the WAN CCNA Exploration spouse advisor Bob Vachon Rick Graziani getting access to the WAN, CCNA Exploration significant other advisor is the respectable supplemental textbook for the gaining 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 means of converged functions in firm networks.
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Extra info for Accessing the WAN, CCNA Exploration Companion Guide
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.
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. In addition, the company has an extranet that provides project information only to designated customers. qxp 8 3/31/08 3:33 PM Page 8 Accessing the WAN, CCNA Exploration Companion Guide Figure 1-3 Campus (Multiple LANs) Marketing and Sales Finance and Accounting Internet Engineering and Production Business Campus (100s of Employees in One or More Floors or Neighboring Buildings) Branch (WAN) Another five years later, Span Engineering has been so successful with its patented process that demand for its services has skyrocketed.
ATM is different from the others, because it uses small fixed-size cells of 53 bytes (48 bytes for data), unlike the other packet-switched technologies, which use variablesized packets. 25 are older data-link protocols that are less frequently used today. However, ISDN is still covered in this course because of its use when provisioning a VoIP network using PRI links. 25 is mentioned to help explain the relevance of Frame Relay. 25 is still in use in developing countries where packet data networks (PDN) are used to transmit credit card and debit card transactions from retailers.