A wan connects different smaller networks, including local area networks lans and metro area networks mans. It provides a solution to companies or organizations operating from distant geographical locations who want to communicate with each other for sharing and managing central data or for general communication. Data communication and computer network 5 backbone of man is highcapacity and highspeed fiber optics. Wide area networks wan comprise the data networks covering individual cities, to the entire globe. May 27, 2014 07 in this module youll learn about connecting your local area network to other local area networks over large geographic areas and across multiple types of boundaries. A wide area coverage is provided by cellular networks, a reason of a wide adoption of second generation 2g and third generation 3g technologies for m2m communication. Pdf applications, deployed over a wide area network wan which may connect across. This textbook provides an introduction to internetworking and wide area networks and their related technology.
A man metropolitan area network is another category of network, though the term is not prevalently used. Wan technologies followed by information on the selected wan of focus a hybrid wan. Local area networks lans have become commonplace in most medium and large companies. Basic network design overview the main function of the manufacturing zone is to isolate critical services and applications that are. Three main networking technologies are used to connect computers and networks together. Wide area network wan when network spans over a large distance or when the computers to be connected to each other are at widely separated locations a local area network cannot be used. The wan is a place in the network that aggregates various types, speeds, and links running a disparate set of protocols together crossing metropolitan, state, and even country boundaries. The internet most superior telecommunication network.
Wide area network wan to summarize, at layer 3 an ip address is used to locate every host on the network. But hosts are located at layer 2 by a mac address, not an ip address. Current local area networks lans runs at bandwidth speeds of 100 mbps, 1 gbps or 10 gbps. Powerline communications systems operate by adding a modulated carrier signal to the wiring system. Lans, wans the internet cse 32, fall 2010 instructor. Aug 31, 2017 ebook ccna certification all in one for dummies pdf s.
Since the power distribution system was originally intended for transmission of ac power at typical frequencies of 50 or 60 hz, power wire circuits have only a limited ability to carry higher frequencies. Current wide area networks runs on bandwidths of 20 mbps, 50 mbps or 100 mbps. Very rarely, a lan network will span a couple of buildings. Man works in between local area network and wide area network. It is also known as powerline carrier, powerline digital subscriber line pdsl, mains communication, powerline telecommunications plt, or powerline networking pln. The easiest way to understand what a wan is to think of the internet as a whole, which is the. An interconnected collection of autonomous computers interconnected. It connects computers that are close together, usually within a room or a building. They can be private to connect parts of a business or they can be more public to connect smaller networks together. A local area network lan is a private computer network that connects computers in small physical areas.
Local area network lan wide area network wan metropolitan area network man 3 lan. Introduction to wide area network protocols presentation. It can be private to connect parts of a business, or it can be public to connect smaller networks. Its also possible to have more than two sites, creating a multiaccess network. Wide area network wan wan or wide area network is a computer network that extends over a large geographical area, although it might be confined within the bounds of a state or country. Bestselling authors and expert instructors keith barker and kevin wallace share preparation hints and testtaking tips, helping you identify areas of weakness and improve. As soon as you take a brand new router out of the box it will build a routing. Ebook ccna certification all in one for dummies pdf. The book definition of a wan is a network that spans large geographical locations, usually to interconnect multiple local area networks lans. This lesson explains what wans wide area network are with some examples of leased lines, dcedte, csudsu, dsl, cable and more. Computer networking and management lesson 1 computer.
An internetwork is a general term describing multiple networks connected together. Wide area networks wan is type of computer network to connect offices which are located in different geographical locations. In this chapter, we concentrate on those wan issues that you must understand to pass the microsoft networking essentials exam. The data on these networks, naturally, includes video and voice.
Individuals, professionals and academics have also learned to rely on computer networks for capabilities such as electronic mail and access to remote databases for research and communication purposes. Wan is a wide area network, as such it is spread over a very large area such as a city, country or even a continent and overseas, the internet is a wan which is spread worldwide source website. Ppt networking basics powerpoint presentation free to. Based on packet switching technologyexamples of wan technology. Wide area networkwan when network spans over a large distance or when the computers to be connected to each other are at widely separated locations a local area network cannot be used. A small office, a single building, multiple buildings inside a campus etc. Wide area networks wan has lower bandwidth rates compared with local area network lan. Powerline communication plc carries data on a conductor that is also used simultaneously for ac electric power transmission or electric power distribution to consumers. You have now learned the basics of wans wide area network. Once you have learned about your local area network, we will teach you about connecting it to other local area networks over large geographic areas and. The key difference between lans and wans is that the.
Local area networks lan and wide area networks wan. The osi models, popular network protocols and technology, and routing technology and protocols are discussed. A local area network, or lan, consists of a computer network at a single site, typically an individual office building. Pdf on wide area network optimization researchgate.
The communication between different users of wan is established using leased telephone lines or satellite links and similar channels. A wide area network wan is a telecommunications network that extends over a large geographical area for the primary purpose of computer networking. Wide area networks wans encyclopedia business terms. This separation is usually achieved by a demilitarized zone dmz. There are two prevailing definitions of a wide area network wan. An example of a lan network is the network in a school or an office building. Upload your document and click the submit to dropbox button. A man is defined as a network that connects lans across a citywide geographic area. However, an impending decommissioning of these technologies 5, as announced by some mobile network operators mnos, will broaden the technology gap in connecting lowpower. The wide area network wan service offers statewide internet protocol ip data communications connectivity at commercially available rates to any authorized government entity. A wide area network wan is a data network, usually used for connecting computers, that spans a wide geographical area. Describe the functionality of lan, man, and wan networks. This ensures that computers and users in one location can communicate with computers and users in other locations.
For technicians to perform well in this world, they need to be familiar with the various wan technologies. Consequently, layer 3 uses arp broadcasts to solicit a mapping of ip addresses to mac addresses. Wide area networks are often established with leased telecommunication circuits. Mar 22, 2018 a wide area network wan is a network that exists over a largescale geographical area. Contents at a glance introduction xxv chapter 1 computer network fundamentals 2 chapter 2 the osi reference model 28 chapter 3 network components 60 chapter 4 ethernet technology 112 chapter 5 ipv4 and ipv6 addresses 148 chapter 6 routing ip packets 198 chapter 7 widearea networks 230 chapter 8 wireless lans 266 chapter 9 network optimization 296 chapter 10. The difference between circuit switching, packet switching, and cell switching. An access network may be a socalled localarea network within a company or university, a dial telephone line with a modem, or a high speed cablebased or phonebased access network.
Wide area networks are often established with leased telecommunication circuits business, as well as education and government entities use wide area networks to relay data to staff, students, clients, buyers and suppliers from various locations. Mar 10, 2020 the softwaredefined wide area network sdwan or sdwan is a specific application of softwaredefined networking sdn technology applied to wan connections such as broadband internet, 4g, lte. The practical definition of a wan is a network that traverses a public network or commercial carrier, using one of several wan. The term wide area network is used to describe a network that spans multiple geographic locations. As an introduction into wan, this course teaches satellite network basics, as well as how the various wan technologies work. Download this computer networking pdf excerpt from computer networks, a book that addresses the key principles of computer networks. The communication between different users of wan is established using leased telephone lines. Asynchronous transfer mode atm, integrated services digital network isdn lanscover buildings or a set of closely related buildings. Switches use mac address tables to forward ethernet frames and routers use a routing table to learn where to forward ip packets to. You have grown accustomed to working with them, possibly without even knowing it. If the company connects these two lans together using wan technology, a wan is created. Ethernet is also used with different underlying wan technologies like eompls ethernet over mpls. Ip addresses are 32 bit long, hierarchical addressing scheme.
Wan terminology as your local area network matures, you will probably notice a decrease in its responsiveness. A lan is very useful for sharing resources, such as data storage and printers. As the naming conventions suggest, lans are for smaller, more localized networking in a home, business, school, etc. Local isps are in turn connected to regional isps, which are in turn connected to national and international isps. Ip is a standard that defines the manner in which the network layers of two hosts interact. But tcpip was designed as a wideareanetwork wan, able to continue to function, even if part of the network was not operating damaged or destroyed. The internet is the largest and most wellknown internetwork. A company has two offices, one in london and one in berlin. Lan, which stands for local area network, and wan, which stands for wide area network, are two types of networks that allow for interconnectivity between computers. Wide area network as the name suggests, the wide area network wan covers a wide area which may. Local area network lan bandwidth rates are almost constant. A wan could be a connection of lan connecting to other lans via telephone lines and radio waves and may be limited to an enterprise a corporation or an.
A wide area network spans a large geographic area such as a city, state, or country. A wan provides long distance transmission of data, voice image and video information over large geographical areas that may comprise a country, a continent or even the whole world. The terminology that is used when talking about the wan physical layer. Used to network computers located in a limited geographical area such as a room, floor. The managed wan service connects the customers local area network lan to other customer locations, other state agencies including its, and to the internet using. Introducing basic network concepts 3 basetech networking concepts team 2230894 blind folio 3 figure 1. Widearea data network performance engineering xfiles. Basic network design overview the main function of the manufacturing zone is to isolate critical services and applications that are important for the proper functioning of the production floor control systems from the enterprise network or zone.
Types of area networks lan, man and wan geeksforgeeks. Wide area networks wans and local area networks lans. A wide area network wan is a network that exists over a largescale geographical area. Instead of having a macaddresstable with 400 mac addresses we now only need a single entry on each router for each others networks. Wide area network is a computer network that covers relatively larger geographical area such as a state, province or country.
The practical definition of a wan is a network that traverses a public. Wans can be used to connect cities, states, or even countries. In chapter 1, foundation, learn how local and wide area networks wans are now built to connect more than computers. Different types of powerline communications use different frequency bands. Although this book is about computer networks, there are networks that dont involve computers, and those networks are everywhere. Some examples of wan technologies like leased lines, framerelay, dsl, cable, and ethernet. The internetthe world wide web is the most visible. In its broadest sense, a network consists of two or more entities, or objects, sharing resources and information. Networking basics computer networking has become an integral part of business today. That is, one network can be connected to another network and become a more powerful tool because of the greater resources.
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