Lan and wan technologies

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  • With some 200 million hosts generating traffic on the Internet, TCP/IP (transmission control protocol/Internet protocol) has become the protocol suite of choice to support the exchange of messages in commercial operations and residential activities. This hands-on resource provides professionals with a comprehensive picture of the Internet protocol stack and the role of TCP/IP in data communication. It serves as a detailed guide to the protocols, networks, codes, signals, and equipment that make it possible to communicate using TCP/IP.

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  • The main contents of this chapter include all of the following: Wide-Area Network, WAN Access and the OSI reference model, WAN devices, physical layer: WANs, serial Point-to-Point connections, WAN-Multiple LANs,... Inviting you to refer.

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  • In the two decades since their invention, the heterogeneity of networks has expanded further with the deployment of Ethernet, Token Ring, Fiber Distributed Data Interface (FDDI), X.25, Frame Relay, Switched Multimegabit Data Service (SMDS), Integrated Services Digital Network (ISDN), and most recently, Asynchronous Transfer Mode (ATM). The Internet protocols are the best proven approach to internetworking this diverse range of LAN and WAN technologies.

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  • Network Security Identify security risks in LANs and WANs and design security policies that minimize risks Explain how physical security contributes to network security Discuss hardware- and design-based security techniques Use network operating system techniques to provide basic security Understand methods of encryption, such as SSL and IPSec, that can secure data in storage and in transit Describe how popular authentication protocols, such as RADIUS, TACACS, Kerberos, PAP, CHAP, and MS-CHAP, function Understand wireless security protocols, such as WEP, WPA, and 802.11...

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  • This chapter offers a brief introduction to networking and some basic networking terms and concepts. This material should be a review of many already known concepts. You should be familiar with the various networking topologies used in networks, as well as different types of networks, such as local area networks (LANs) and wide area networks (WANs).

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  • Superior high speed data and voice cross connect modules. Available in 8 and 10 pair disconnect versions. These modules enable high speed LAN and WAN systems maximum headroom in transmission performance. HIGHBAND utilises the silver plated LSA Plus contact principle. This is proven technology which has become the ‘industry standard’ in over 60 countries. The gas tight contacts ensure a reliable and long lasting connection. These modules can be either patched, jumpered and used in a patch by exception configuration....

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  • Superior high speed data and voice cross connect modules. Available in 16 and 20 pair versions. These modules enable high speed LAN and WAN systems maximum headroom in transmission performance. They are ideal where density is of more importance than the disconnection feature of the HIGHBAND 8 and 10 pair modules. HIGHBAND utilises the LSA Plus silver plated contact principle. This is proven technology which has become the ‘industry standard’ in over 60 countries. The gas tight contacts ensure a reliable and long lasting connection. These modules can be either patched or double jumpered....

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  • Superior high speed data and voice cross connect modules. Available in 8 pair disconnect version with a compact footprint for high density applications. These modules also enable high speed LAN and WAN systems maximum headroom beyond Enhanced CAT 5 transmission performance HIGHBAND utilises the silver plated LSA Plus contact principle. This is proven technology which has become the ‘industry standard‘ in over 60 countries. The gas tight contacts ensure a reliable and long lasting connection.

    pdf2p thanhha 27-08-2009 61 3   Download

  • This textbook was developed for beginning information technology (IT) students who want to learn to support and troubleshoot local area networks (LANs) and wide area networks (WANs) consisting of computers running Microsoft Windows and other operating systems.

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  • This textbook was developed for beginning information technology (IT) students who want to learn to support and troubleshoot local area networks (LANs) and wide area networks (WANs) consisting of computers running Microsoft Windows and other operating systems.

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  • Chapter 5 - Networks and telecommunications. Compare LANs, WANs, and MANs; list and describe the four components that differentiate networks; compare the two types of network architectures; explain topology and the different types found in networks; describe TCP/IP along with its primary purpose; identify the different media types found in networks;...

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  • We discussed wireless LANs in chapter 14. Wireless technology is also used in cellular telephony and satellite networks. We discuss the former in this chapter as well as examples of channelization access methods (see Chapter 12). We also briefly discuss satellite networks, a technology that eventually will be linked to cellular telephony to access the Internet directly.

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  • Introduction to PAN Technology and Applications 11.1.1 Historical Overview The concept of a Personal Area Network (PAN) differs from that of other types of data networks (e.g. LAN, MAN, WAN) in terms of size, performance and cost (Figure 11.1). PANs are the next step down from LANs and target applications that demand short-range communications inside the Personal Operating Space (POS) of a person or device. The term POS is used to define the space in the near vicinity of a person or device and can be thought of as a bubble that surrounds him. As the person goes through his regular daily...

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  • Module E - Network basics. After completing this unit, you should be able to: Identify and describe the four basic concepts on which networks are built and describe what is needed to set up a small peer-to-peer network at home; describe the components used to build large business networks and define and compare local area networks (LANs), wide area networks (WANs), and metropolitan area networks (MANs); compare and contrast the various Internet connection possibilities;...

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  • After studying this chapter you will be able to: Describe the fundamental concepts of Frame Relay technology in terms of Enterprise WAN services including Frame Relay operation, Frame Relay implementation requirements, Frame Relay maps, and LMI operation; configure a basic Frame Relay PVC including configuring and troubleshooting Frame Relay on a router serial interface and configuring a static Frame Relay map.

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  • Chapter summary: Computers communicate by using languages called protocols, protocols provide services to other protocols operating above and below them, a LAN uses a common network medium to connect computers in a relatively small area, a WAN uses an external network provider to connect LANs, broadband networks carry multiple signals at once, while baseband networks carry only one signal,...

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  • The H.323 standard is a cornerstone technology for the transmission of real-time audio, video, and data communications over packet-based networks. It specifies the components, protocols, and procedures providing multimedia communication over packet-based networks (see Figure 1). Packet-based networks include IP–based (including the Internet) or Internet packet exchange (IPX)–based local-area networks (LANs), enterprise networks (ENs), metropolitan-area networks (MANs), and wide-area networks (WANs). H.

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  • Frame Relay is a standardized wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology. Originally designed for transport across Integrated Services Digital Network (ISDN) infrastructure, it may be used today in the context of many other network interfaces. Network providers commonly implement Frame Relay for voice (VoFR) and data as an encapsulation technique, used between local area networks (LANs) over a wide area network (WAN).

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