Comparison Between Lan And Wan Architecture Computer Science Essay

Comparison Between Lan And sick of(p) Architecture Computer Science EssayWe give up been given this appointment to controvert to the amplyest degree the aw argonness of technologies that be related to the profits and the subject argona Internet application which we have decided that my topic exit be Comparison amongst local area ne bothrk and sicken architecture. Using this topic we would have to discuss the current and latest issues that atomic number 18 related to the topic and subject, furthermore discuss the uses of technology and internet applications utilize in the topic. This topic is close to the communicates that are utilize by users across the globe they use these superbly vanes to work, communicate, do pileiness, find information and even play mettlesomes. Ever since these nets are make heap are able to purchase an item or send a massage totally by the push of a exactlyton. tired of(p) is a network that is more wide in area while local area network is a network that is more hold or has a localized range, some(prenominal) of these networks have their perks and drawbacks and this report is about to discuss all about them including the technologies involved.ObjectivesIntroduce the latest issues of the topicDiscuss about the topics advantages and disadvantagesDiscuss critical comments and analysisWhat is LAN and wide area network Network Architectures dementedA network is a society between two or more estimators that share nurture, thornyware and software with each separate this fellowship kitty be established via equipless or non-wireless media. LAN and WAN are two different networks that are used by users all near the world. The internet is an example of a WAN network, WAN was showtime created in 1969 it was first a networking project by ARPANET Pentagons Advance explore Projects Agency the important goal of the project was to allow scientists all around the globe, at different locations to share their inf ormation. Only four host inspissations at the time and grew to 1000 host thickeners in 1984, today there are over 350 million host pommels worldwide using the internet. The internet uses playing field name and IP supplementress to differentiate or identify the computing devices affiliated to the internet. WAN is a network that spans over large geographical areas and is consisting of small networks called LAN or MAN. WAN is virtuallyly used for business, collecting information, converse and new(prenominal) daily uses regardless of the users location. There are umteen a(prenominal) ship canal to approach shot the internet for example trough Wireless Internet dish Provider, Access provider where some business that provides individuals and opposite companies and their employees nark to the internet with payment or for big.LANLocal area network remediate cognise as LAN is a network that has a limited area such as a house, school, computer laboratory, workshop or a sma ll office building. LAN is normally have-to doe withed by a ill-shapen pair melodic line, hub or Wi-Fi, LAN is as well high-speed than WAN because of the small area of the network and that the network lack of the rent for a leased telecommunication line, in order to share data, printers or a LAN party which means a gathe dodge of users, computers and game consoles for a multiplayer game. In a LAN network there is the principal(prenominal) computer called a server and remote computers called clients, a LAN connection can be wireless or wired. wire LAN network uses wire to connect to all the computers which would like to join the network and the main device called a switch. The wireless however uses radio waves to connect with other clients.Comparison between LAN and WAN Network ArchitecturesThere are many differences between LAN and WAN networks, the table displayed below compares the many differences between these two e actuallyday networks.DifferencesLANWANSpeed high(1000 mbps)Lower(150mbps)Owners possess and controlled by only wizard user, organization or server non owned by any ace or any organizationSet up costsSet-up costs are low as the devices are cheapSet-up cost is higher consequently LAN as the there testament be a monthly payment for connection, some connections are free as they are provided by companiesData transfer rateHigher therefore WANLower then LANComponentsUse hubs, repeaters, bridge and switchesUse router, frame relay switches and multilayer switchesConnectionTele ring lines and radio waves a good deal connect trough public networks example mobilise lines, leased lines, satelliteMaintenanceLAN network encounters fewer problems as there are few systems to deal with.Maintenance is easy, faster and cheaper than WANMore errors are encountered in WAN as there are many systems that are at work.Maintenance is harder, slower and tends to be more expensive then LANGeographical AreaLAN covers an area which is within 100meters in aloo fnessWAN covers a geographical area which is more than 100meters in lengthBandwidthHigh bandwidth then WAN is complaisantLow bandwidth is accessibleTechnical Area of LAN and WAN Network ArchitecturesLAN How LAN connectsLAN has both wired and wireless methods to connect to each other, or so LAN networks have a telephone circuit running from every computer to a wall red cent. The wall seaman is affiliated to a very similar type of stemma that runs to a patch embellish in a fit closet. A patch panel is simply subscriber line ports that allow all of the rail lines coming out of each wall jack to be affiliated to the LAN freely. Any active wall jack essential have the matching port in the patch panel connected to a switch in the equip closet. A equip closet is small room or area where all of the wires connect and a building that uses computer networking will have more than one of these wiring closets placed in them, these wiring closets are mainly used for LAN networking. If there are many switches in a wiring closet, they are connected to one or two switches within in the same closet. These serve to connect all of the switches there as comfortably as some of the cable runs entering the room. The switches in a wiring closet are connected to a switch pair in a main wiring closet. The switch pair helps to connect the stainless LAN together. These distribution switches connect to the routers that helps the network travel further, connect the switches to the internet or the WAN thus extending the LAN.CUsersuserDownloadsLANArchitectureDiag1.jpegLAN Network Cabling or Wired networkCoaxial cableCable is a medium in where information flows freely from one network device to next and then the next. In a LAN network there are many different types of cables used to connect the devices and computers in it, in the early LAN cabling system LAN used divers(a) versions of the coaxial cable. These cables are hard to install and are highly resistant to signal commo tion. They have a single(a) central solid wire that symmetrically surrounded by a braided or foil conductor. Between the center wire and foil there is the insulation wire and then comes the copper electronic network and the outer insulator.CUsersuserDownloadscoaxla.gifTwisted-pair cableA twisted-pair cable is a cable that is made with an inte remnanting technique, by intertwining the two separate insulated cables together with a certain color code, by doing this process it helps blocking out the electromagnetic interference EMI that could cause problems in the information sent through it. This cable is similarly the most widely used cable or the most fitted one for LAN networks. There are two different types of twisted pair cable unshielded twisted-pair UTP and shielded twisted-pair STP, the difference is that the STP has a fine wire mesh that surrounds the wire to protect transmittings while the UTP does not, and this is wherefore the UTP is more sensitive than the STP. The STP can withal extend to maximal distances and can withstand most environments. This cable was used in IBMs nominal Ring in LAN implementation.CUsersuserDownloadsutp and stp.jpgFiber Optic cableFiber optic cable is a the latest version of a LAN cable since the twisted-pair cable, this cable consists of tiny hair like vulcanized fiber optic glass tubes that transmit the data which is protected by some(prenominal) layers of protective material called Kevlar. These hair like glass tubes transmit information or data with light signals rather than electronic signals, with this design and technology he fiber optic cable eliminates galvanising interference, the cable is also known for its immunity to the effects of moisture and lightning which makes it ideal for network connections between buildings. This cable has the ability to transmit signals faster and further then both the coaxial and twisted-pair cable. However there are several disadvantages of the cable, which are the cable i s more thorny to install and more costly than both the twisted-pair cable and the coaxial cable.CUsersuserDownloadsFiber-Cable.jpgLAN Network analysis situsNetwork regional anatomy is the vogue they are assembled in which the network of computers and devices connect, each of this topology are used for a specific task and have their own advantages and disadvantages. The computers or users in a network topology are called nodes. Most network topology use a cable as a medium.Bus TopologyThe bus network topology is the simplest way to connect with multiple nodes, the bus has a single main cable that connects to other nodes, this main cable is also known as the backbone. Each node is connected one right after the other along the backbone, data or information that is sent from a node goes through the backbone until it reaches its receiving node, if an information or data sent such as an email does not reaches the receiving node it will be sent to the terminator which deletes the email completely. The bus is usually used for implementing Ethernet at 10mbps.CUsersuserDownloadsbus_topology.gifAdvantagesDisadvantages easy to connect to computer or peripheralBackbone breaks spotless system shutdownRequires less cable length then star topologyTroubleshooting is difficultRing TopologyThe ring network is a network topology where each node connects to two other nodes beside it forming a circle or ring and a single continuous link, the nodes are then connected to a main node or the first node. In the network information is passed from one node to the other, which means that a node acts as both the receiver and sender.CUsersuserDownloadsRING_Topology.pngAdvantagesDisadvantagesEasy to wire and installIf one node fails entire system failsTroubleshooting is difficult when the entire network fails.Star TopologyStar topology is the most common network topology used, unlike the previous topology network the star has a hub or switch in its center, which acts as a conduit that t ransmits information through the network. Every device in the network is connected to the hub. The hub does not preform filtering or routing type tasks.CUsersuserDownloadsfigure2.jpgAdvantagesDisadvantagesEasy to modify and add new computers to network without shutting down networkRequires more cable then bus and ring topologyIf one node fails the rest of the network will still functionIf the hub or switch goes fails the entire network failsTroubleshooting is easyMore expensiveWANNSPNSP also known as network service provider is an organization that does business by selling bandwidth or access to networks such as the internet by providing the backbone access to the internet itself as such the NSP is sometimes referred to or also known as backbone providers or internet providers. WAN network uses NSP to connect to other networks around the world and this is how, by connecting the NSP of other WANs together using links at Internet Packet Interchanges a global communication infrastructu re is formed, these interchanges are also called peering points. The NSPs do not generally handle individual customer accounts except for the major incorporate customers, but instead deal with intermediate organizations that they can charge for high capacity communications. They generally have an agreement to exchange certain volumes of data at a certain quality of service with other NSPs. So practically any NSP can reach any other NSP, but may require the use of one or more other NSP networks to reach the required destination. NSPs vary in terms of the transit delay, transmission rate, and connectivity offered.CUsersuserDownloadswan.gifWANDial-up accessDial-up internet is a connection which is made by the modem that is built in your computer and through a standard telephones line, by running by running the telephone line to the modem the computer can connect to the internet. This dialing must be done with a specific phone number. The dial-up system is a method that has been the th ing of the past as it tends to discern a long time to establish a connection with the internet, when it does the internet speed will be very slow.DSLDSL or dial subscribe line is a family of technologies that provide internet access by transmitting data by using the local telephone lines. POTS or better known as Plain Old skirt Service One, POTS makes the most of the telephone companys wires and equipment is by limiting the frequencies that the switches, telephones and other equipment will carry. Human voices, speaking in normal conversational tones, can be carried in a frequency range of 0 to 3,400 Hertz cycles per numberfor a great demonstration of this. This range of frequencies is tiny. These telephone lines are connected by copper wires to each home.Wi-FiWi-Fi is a wireless modem that allows a computer to connect to the internet. Wi-Fi can be less secure then the cable connections as bad weather or any other electrical interferences could damage the connection. Wi-Fi has ado pted various encryption technologies. The early encryptionWEP, proven easy to break. Higher quality protocols WPA, WPA2 were added later. An optional feature added in 2007, calledWi-Fi protected Setup orWPS, had a serious flaw that allowed an attacker to find out the routers password.Slow speed technologyHigh speed technologyDial-up access uses a modem built in the computer that connects to the telephone line in the house to connect to the internetCable modem, DSL, WI-FI and satellite modemsConnection must be switched on when computer is turned onConnection is perpetually on, when computer is runningCUsersuserDownloadsWAN-network.gifCritical Comments and AnalysisThis assignment has been a very interesting experience, not only have I conditioned a lot more regarding aspects of the Internet Applications module but it has also improved my understanding regarding various issues related to fed up(p) and Lan network architectures. Ive come to understand that fundamental difference bet ween them especially in the ways they function, and also in the way to set them up. Lan and Wan are two different networks architectures that are built to serve various users types and will come to play a very fundamental billet as the world of information technology develops further.ConclusionsThe conclusion is, that LAN and WAN is two different networks yet both are just as important, these networks are used every day by everyday people like us. We use them to gather information and communicate with each other. This technology has helped develop our community and will continue developing it.