By Bob Vachon
Having access to the WAN CCNA Exploration significant other consultant Bob Vachon Rick Graziani getting access to the WAN, CCNA Exploration better half consultant is the reliable supplemental textbook for the gaining access to the WAN path within the Cisco Networking Academy CCNA Exploration curriculum model four. This direction discusses the WAN applied sciences and community providers required via converged purposes in company networks. The spouse advisor, written and edited via Networking Academy teachers, is designed as a conveyable table connection with use each time, anyplace. The book’s good points make stronger the cloth within the path that can assist you specialize in very important innovations and arrange your examine time for assessments. New and greater positive aspects assist you learn and reach this path: bankruptcy pursuits: overview center ideas by means of answering the point of interest questions indexed first and foremost 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. thesaurus: seek advice the all-new accomplished word list with greater than 250 phrases. cost 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 notice at the on-line path quizzes. the reply key explains every 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 resolution. Bob Vachon is the coordinator of the pc platforms know-how application and teaches networking infrastructure classes at Cambrian collage in Sudbury, Ontario, Canada. Bob has labored and taught within the laptop networking and data know-how box for 25 years and is a pupil graduate of Cambrian College. Rick Graziani teaches laptop technological know-how and machine networking classes at Cabrillo collage in Aptos, California. Rick has labored and taught within the machine networking and knowledge expertise box for 30 years. the right way to: search for this icon to check the stairs you should discover ways to practice convinced projects. Packet Tracer actions: discover networking thoughts 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 having access to the WAN direction gaining 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 aid your schooling: Packet Tracer task workout records A advisor to utilizing a Networker’s magazine publication Taking Notes: A .txt dossier of the bankruptcy ambitions extra IT profession info 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 help and supplement the Cisco Networking Academy on-line curriculum.
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Video and voice traffic do not have to wait for a larger data packet to be transmitted. 25. Furthermore, the ATM cell has at least 5 bytes of overhead for each 48-byte payload. When the cell is carrying segmented network layer packets, the overhead is higher, because the ATM switch must be able to reassemble the packets at the destination. A typical ATM line needs almost 20 percent more bandwidth than Frame Relay to carry the same volume of network layer data. ATM was designed to be extremely scalable.
The following are some of the modules within the architecture that are relevant to the Span Engineering scenario described earlier: ■ Enterprise Campus Architecture ■ Enterprise Branch Architecture ■ Enterprise Data Center Architecture ■ Enterprise Teleworker Architecture Figure 1-9 shows the Cisco Enterprise Architecture, which consists of modules representing focused views that target each place in the network. Each module has a distinct network infrastructure with services and network applications that extend across the modules.
Qxp 3/31/08 3:33 PM Page 31 Chapter 1: Introduction to WANs 31 Dedicated Connection Link Options When permanent dedicated connections are required, a point-to-point link is used to provide a preestablished WAN communications path from the customer premises through the provider network to a remote destination. Point-to-point lines usually are leased from a carrier and are called leased lines. Figure 1-21 shows a T3 and E3 circuit. This section describes how enterprises use leased lines to provide a dedicated WAN connection.
Accessing the WAN, CCNA Exploration Companion Guide by Bob Vachon