By Bob Vachon
Having access to the WAN CCNA Exploration significant other advisor Bob Vachon Rick Graziani having access to the WAN, CCNA Exploration better half advisor is the legit supplemental textbook for the having 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 via converged functions in firm networks. The spouse consultant, written and edited through Networking Academy teachers, is designed as a transportable table connection with use every time, anyplace. The book’s beneficial properties make stronger the fabric within the path that can assist you specialize in very important innovations and arrange your learn time for assessments. New and enhanced positive aspects assist you examine and achieve this direction: bankruptcy ambitions: overview center suggestions via answering the point of interest questions indexed before everything of every bankruptcy. keywords: consult with the up to date lists of networking vocabulary brought and switch to the highlighted phrases in context in each one bankruptcy. word list: seek advice the all-new accomplished thesaurus with greater than 250 phrases. cost Your knowing questions and resolution key: assessment 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 overview questions and actions designed to arrange you for the advanced forms of questions you could see at the CCNA examination. the reply key explains each one solution. Bob Vachon is the coordinator of the pc platforms know-how software 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 pupil graduate of Cambrian College. Rick Graziani teaches desktop technology and laptop networking classes at Cabrillo collage in Aptos, California. Rick has labored and taught within the desktop networking and knowledge expertise box for 30 years. the best way to: search for this icon to review the stairs you have to learn how to practice yes projects. Packet Tracer actions: discover networking strategies in actions interspersed all through a few chapters utilizing Packet Tracer v4.1 built via Cisco. The records for those actions are at the accompanying CD-ROM. additionally to be had for the gaining access to the WAN direction gaining access to the WAN, CCNA Exploration Labs and learn consultant ISBN-10: 1-58713-201-X ISBN-13: 978-1-58713-201-8 spouse CD-ROM The CD-ROM presents many helpful instruments and knowledge to help your schooling: Packet Tracer job workout documents A consultant to utilizing a Networker’s magazine ebook Taking Notes: A .txt dossier of the bankruptcy pursuits extra IT profession details tips about 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
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. The local cable TV office, which is called the cable headend, contains the computer system and databases needed to provide Internet access. The most important component located at the headend is the cable modem termination system (CMTS). It sends and receives digital cable modem signals on a cable network and is necessary for providing Internet services to cable subscribers.
Qxp 3/31/08 3:33 PM Page 7 Chapter 1: Introduction to WANs Figure 1-2 7 Small-Office LAN Broadband Access to Internet Internet Small Office (Few Employees) Small Single LAN for Sharing Peripherals and Internet Access To handle the additional workload, the business has hired more staff and leased more office space. It is now a small to medium-sized business with several hundred employees. Many projects are being developed at the same time, and each requires a project manager and support staff. The company has organized itself into functional departments, with each department having its own organizational team.
To help prevent this situation, Cisco has developed a recommended architecture called the Cisco Enterprise Architecture. It has relevance to the different stages of a business’s growth, as shown in Figure 1-8. This architecture is designed to give network planners a road map for network growth as the business moves through different stages. By following the suggested road map, IT managers can plan for future network upgrades that will integrate seamlessly into the existing network and support the ever-growing need for services.