On the lan, the dominant protocol that we use is ethernet. Following picture will provide you a good idea about lan and wan. This tutorial only covers the first three network technologies i. Describe the functionality of lan, man, and wan networks.
On our local area network, there is one dominant protocol called ethernet. Using lan you can interconnect network enabled printer, network attached storage, wifi devices with each other. Protocols specify services the network uses and the. Introduction to computer network complete guide to computer. Internet is not a computer network it is a network of networks the world wide web is a distributed system that runs on top of the internet a distributed system is a collection of independent computers that appears to its users as a single coherent system example. The most popular browsers are microsoft internet explorer and netscape navigator. The first thing we can distinguish between lan local area network and wan is that wan usually covers much greater distance. A wide area network wan is a telecommunications network that extends over a large. Introduction to wireless lan nowadays, there are about more wireless than wired devices. Access to these networks requires users to sign an agreement with the company that operates the network they are interested in.
As an example, for disaster recovery reasons, an organization may decide. The ieee 802 working group defined the local area network lan as a communication system through a shared medium, which allows independent devices to communicate together within a limited area, using an highspeed and reliable communication channel. The practical definition of a wan is a network that traverses a public network or commercial carrier, using one of several wan. These devices can be computers, printers, scanners, fax machines etc. Perhaps in one building or a few buildings close to each other called a campus. It shows the internet as a big cloud without any details. Local area network designintroduction to local area networks.
Most wan technologies describe layer one and two of the osi model. Virtually unusable on very large wide area networks. A wide area network is widely used in the field of business. After learning the introduction of a computer network and its process now we are going to learn the types of computer network. A wide area network is quite bigger network than the lan. The data on these networks, naturally, includes video and voice.
Wan technologies followed by information on the selected wan of focus. Wide area networks wan comprise the data networks covering individual cities, to the entire globe. When we need access to other remote networks, connect two lans together or give others access to our lan, we need a wan wide area network. Overview this manual is intended for embedded systems engineers and support professionals who are not familiar with wireless networking from a theoretical or implementation point of view. An introduction to networking terminology, interfaces, and. It means a network that is much more extensive than a lan. Wan technologies followed by information on the selected wan of focus a hybrid wan. This is accomplished with direct support for highly. Pdf design and implementation of system and wide area. In terms of the osi reference model, the radio signal operates at the physical layer, and the data format controls several of the higher layers.
Routed networking large networks are built by applying routing between. Nov 11, 2019 a wan wide area network is a communications network that spans a large geographic area such as across cities, states, or countries. 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. They can be private to connect parts of a business or they can be more public to connect smaller networks together. This tutorial lesson gives an introduction to computer networking. Pdf short 57 page paper on wide area networks prepared for the it data communications course. 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. A wan wide area network is a communications network that spans a large geographic area such as across cities, states, or countries. Clark et al an introduction to local area networks 1501. These are preferred as they are easy to design and troubleshoot. Local area networks lan and wide area networks wan. That is, one network can be connected to another network and become a more powerful tool because of the greater resources. Bridged networking in a simple local area wireless network, a bridged architecture is usually adequate. Many networking devices are used to connect the lan to a wan.
Man works in between local area network and wide area network. Introduction to the controller area network can 3 standard can or extended can the can communication protocol is a carriersense, multipleaccess protocol with collision detection and. The communication between different users of wan is established using leased telephone lines. The book definition of a wan is a network that spans large geographical locations, usually to interconnect multiple local area networks lans. Its called a local area network since all devices that make up the lan are close to each other. Wide area networks wan is type of computer network to connect offices which are located in different geographical locations. Railway, airways, banks, schools all provides their services to the customer via wide area network wan. Using wan optimization controllers for application. You will learn about selecting the appropriate wan technologies, services. A computer network is a group of devices connected with each other through a transmission medium such as wires, cables etc. For technicians to perform well in this world, they need to be familiar with the various wan technologies.
A network consists of 2 or a lot of computers that are coupled so as to share resources such as cds and printers, exchange files, or enable electronic communications. The term computer network can be defined as two or more computers which are connected together to share resources such as data, software, internet connection, printers, scanners etc. Introduction to wide area networks utilize windows. Wide area network is a computer network that covers relatively larger geographical area such as a state, province or country. Wide area network as the name suggests, the wide area network wan covers a wide area which may. The wan is a place in the network that aggregates various. As an introduction into wan, this course teaches satellite network basics, as well as how the various wan technologies work. It basically connects many lans together to reach beyond just peer to peer sharing. Wan wide area network this network type covers more area than lan as they allow connectivity across large geographical area. Wide area networks wans are used to connect remote lans.
Introducing basic network concepts 3 basetech networking concepts team 2230894 blind folio 3. The best example of wide area network wan is internet. 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. You must have a clear idea of the lay of the land between two points before you can determine if a link is even possible. Introduction to wide area network protocols presentation. Ip is a standard that defines the manner in which the network layers of two hosts interact. Wireless wide area networks wwans wwans have been in place since the early 1980s for voice communication, and since the early 1990s for data communication.
Fibre channel storage area networks, and numerous wide area network wan interconnects, infiniband has been networked to go beyond the need s of todays markets a nd provide a cohesive interconnect for a wide range of systems. Wide area networks wans larger geographic distance e. This introduction to application delivery explains early app delivery factors that drove the initial deployment of wide area network wan optimization controllers and how application challenges and solutions will continue to drive wan optimization controller implementation in enterprise networks. For wide area networks, there are dozens of technologies and protocols we can choose from. Widearea network wan access has become essential for larger businesses. Introduction to networking 5 retailer1 customer at home web browser the. Wide area networks wans and local area networks lans. About 10 years ago, most offices only had desktops and some other network devices like printers. Data networks lecture 1 introduction mit opencourseware.
Wide area network is a cn that covers a broad area, e. Lan local area network this is designed for small areas or work units such as an office, group of buildings etc. Figure removes the cloud, shows some details, and shows some other clouds. Lan network is made up of two or more computers connected together in a short distanc e usually at home, office buildings or school. Introduction a network can be defined as a group of computers and other devices connected in some ways so as to be able to exchange data. The textbook definition of a wan is a computer network spanning regions, countries, or even. 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. A can, for example, may have a localized backbone of a wan technology, which. A network refers to two or more connected computers that can share. For connecting network across the different geographical area, you can use wan wide area network. We use a wan connection to reach other remote lans or servers on the internet. An example of a lan network is the network in a school or an office building. Introduction to the controller area network can rev. However, an impending decommissioning of these technologies 5, as announced by some mobile network operators mnos, will broaden the technology gap in connecting lowpower.
Internet, tcpip, security, network design, lan, wan, encryption, vpn, ipsec. Wan is used to connect two or more networks over a long distance. Introduction to network programming in python studytonight. Introduction to wireless networks when you invent a new network. Wide area network wan wide area network is a computer network that covers relatively larger geographical area such as a state, province or country. Ip addresses are 32 bit long, hierarchical addressing scheme. Upload your document and click the submit to dropbox button. I initially developed this material as a single weeks lecture in the si502networkedcomputingcourse that i taught at the university of michigan school of information starting in 2008.
A wide area network is not limited to a single location, but it spans over a large geographical area through a telephone line, fibre optic cable or satellite links. Introduction zigbee is the most popular industry wireless mesh networking standard for connecting sensors, instrumentation and control systems. Introduction to cisco wide area application services waas home. Find, read and cite all the research you need on researchgate. This local area use of long due to the fact that longhaul packet communication technology has haul network technology, indicated by the shaded area of fig. Take advantage of this course called network topologies to improve your networking skills and better understand topologies this course is adapted to your level as well as all topologies pdf courses to better enrich your knowledge all you need to do is download the training document, open it and start learning topologies for free this tutorial has been prepared for the beginners to help. Introduction to wide area network wan 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 wa.
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. Once you use connections for external resources, for example, an internet connection we call it a wan wide area network connection. Although you are probably taking this class to learn about computer net works. They build large networks that span entire cities or regions and lease the right to use their networks to their customers. Pdf on wide area network optimization researchgate. Zigbee, a specification for communication in a wireless personal area network wpan, has been called the internet of things. A small office, a single building, multiple buildings inside a campus etc.
This lesson explains what wans wide area network are with some examples of leased lines, dcedte, csudsu, dsl, cable and more. In today life wan is the most important thing which resolves our problems. Terms in this set 35 wide area networks wans run long distances connect different offices in different cities or countries or different buildings in the same city. Mar 23, 2020 a local area network is confined to a smaller area. Wwiiddee aarreeaa nneettwwoorrkk a wide area network is a network spanning a large geographical area of around several hundred miles to across the globe may be privately owned or leased also called enterprise networks if they are privately owned by a large company can be connected through cable, fiber. A web browser is the computer program you use to retrieve and view web pages. A local area network lan is a private computer network that connects computers in small physical areas. We consider other networking technologies, for example, ibms sys. Very rarely, a lan network will span a couple of buildings. A wan is owned by a service provider, and a business pays a fee to use the providers wan network services. In banking all branches connected with each other via wide area network wan. In a company the branches may be connected via wide area network wan.
The purpose of having computer network is to send and receive data stored in other devices over the network. Since then, myriads of new computer networking technologies have been designed. The internet is one of the biggest wan in the world. Here we will see how a computer on the different network communicates with each. Network layer the network layer module accepts incoming packets from the transport layer and transit packets from the dlc layer it routes each packet to the proper outgoing dlc or at the destination to the transport layer typically, the network layer adds its own header to the packets received from the transport layer. Wan, t1, t3, e1, e3, j1, j3, oc, cabling, speed what is wan wan is used to connect two or more networks over a long distance. Before discussing lan wan and man, let us know about the network network. Widearea data network performance engineering xfiles. They are responsible for interconnecting networks by selecting the best path for a packet to travel and forwarding packets to their destination routers are the network centerrouters generally haverouters generally have 2 connections. Northcentral universitys academic integrity policy.
It refers to a network or a portion of a network that is not publicly accessible to the greater internet. Pdf short 57 page paper on wide area networks prepared for the it data. The computers on a network are also coupled through cables, telephone lines, radio waves, satellites, or. Each of the devices on the network can be thought of as a node. Personal computers and workstations are generally preferred to have a lan network. Data communication and computer network 5 backbone of man is highcapacity and highspeed fiber optics.
The function and definition of firewalls and gateways. Introduction to computer network complete guide to. Pdf applications, deployed over a wide area network wan which may connect across metropolitan, regional or. There are two prevailing definitions of a wide area network wan. The speed on lan is usually much greater than on wan. Dfi wid a nt k wandefine wide area networks wans lans separated by geographic distance are connected by a network known as a wide area network wan network known as a wide area network wan individual organizations usually lease connections through a telecommunications service provider network.
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