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Wired Ethernet LANs

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  • Chapter 13 introduces you to wired LANs: Ethernet. This chapter introduces wired local area networks. A wired LAN, viewed as a link, is mostly involved in the physical and data link layers. We have devoted the chapter to the discussion of Ethernet and its evolution, a dominant technology today.

    ppt40p koxih_kothogmih5 01-09-2020 16 0   Download

  • In this lecture, students will be able to understand: introduction, network models, data & signals, digital transmission, transmission media, error detection & correction, data link control, wired LANs – ethernet, wireless LANs, network layer - logical addressing, internet protocols, network layer - delivery, forwarding, and routing, transport layer, switching & vlans, application layer.

    ppt18p koxih_kothogmih5 01-09-2020 30 0   Download

  • Chapter 9 - Local area networks part I: Basic concepts and Wired Ethernet LANs. In this chapter, we discuss how the first two layers of the OSI model (physical and data link) are used to implement local area networks (LANs). In this chapter, we discuss the basics of LANs and Ethernet, the dominant LAN technology.

    ppt34p nhanmotchut_2 19-10-2016 34 2   Download

  • In 1985, the Computer Society of the IEEE started a project, called Project 802, to set standards to enable intercommunication among equipment from a variety of manufacturers. Project 802 is a way of specifying functions of the physical layer and the data link layer of major LAN protocols.

    ppt40p trada85 22-01-2013 45 6   Download

  • In random access or contention methods, no station is superior to another station and none is assigned the control over another. No station permits, or does not permit, another station to send. At each instance, a station that has data to send uses a procedure defined by the protocol to make a decision on whether or not to send.

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  • The data link layer needs to pack bits into frames, so that each frame is distinguishable from another. Our postal system practices a type of framing. The simple act of inserting a letter into an envelope separates one piece of information from another; the envelope serves as the delimiter.

    ppt103p trada85 22-01-2013 65 6   Download

  • Put together a proposal for replacing hubs with switches at a branch office. Research at least two different solutions and develop a proposal. The project details are the following: • The company has a branch location still using an Ethernet hub network. Congestion issues are getting to be a serious problem as more and more services are being added to the network. Currently each of the four floors has one or more hubs in a wiring closet supporting 30-35 computers except the ground floor, which has 65 computers. • The four floors plug into an 8-port 10-Mbps switch that was added earlier...

    pdf2p thanhha 27-08-2009 88 5   Download

  • In this lab, the student will work with Ethernet cable drops that are attached to networking devices such as hubs and switches. This is to determine the characteristics of the devices and cabling and identify potential networking problems. Use some of the key capabilities of the Fluke LinkRunner, such as drop activity and ping, to perform the analysis. As networks run faster and become more complex, infrastructure cabling and devices must operate to precise levels in a tighter performance window. As a result, nearly 80% of network problems stem from simple wiring and connection problems.

    pdf6p thanhha 27-08-2009 79 4   Download

  • Final approval of the Power-over-Ethernet (PoE) standard in June 2003, removed a significant barrier to widespread adoption of IP telephony. The standard (IEEE 802.3af) specifies how to supply power to compliant devices over Ethernet LAN cabling. Armed with uninterruptible power supplies (UPS), IT staff can now deploy Voice over IP (VoIP) telephones without worrying about them not functioning during a power outage. The benefits of this enabling technology extend beyond IP telephony.

    pdf4p halanh 14-08-2009 112 6   Download

  • A campus network is a building or group of buildings that connects to one network, called an enterprise network. Typically, one company owns the entire network, including the wiring between buildings. This local area network (LAN) typically uses Ethernet, Token Ring, Fiber Distributed Data Interface (FDDI), or Asynchronous Transfer Mode (ATM) technologies. The main challenge for network administrators is to make the campus network run efficiently and effectively. To do this, they must understand current campus networks as well as the new emerging campus networks....

    pdf541p maiphuong 12-08-2009 169 31   Download

  • Networks are useful tools for sharing computer resources. You can access one printer from different computers and access data located on another computer's hard drive. Networks are even used for playing multiplayer video games. So, networks are not only useful in homes and offices, they can also be fun. PCs on a wired network create a LAN, or Local Area Network. They are connected with Ethernet cables, which is why the network is called “wired”.

    pdf90p duypha 10-08-2009 61 6   Download

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