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Basic networking
 

Basic networking

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Networking Concepts

Networking Concepts

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    Basic networking Basic networking Presentation Transcript

    • Mr.Khan 1
    • Topic of Presentation 2 Mr.Khan
    •  Contents What is network? Uses of networks History of networking Types 0f networking How networks are structured? Network Topologies Network Protocols 3Mr.Khan
    • Networking:-____”When two or more computers connected to each other through some communication media is called Networking.____” 4 Mr.Khan
    • for example:- 5 Mr.Khan
    • History of networking:- Over the five decades that Unisys has been involved in the computer industry, it has participated in the development of networking technologies while working under contract for the Department of Defense (DOD) and other government agencies and in the course of developing its commercial product offerings. During this time Unisys has made several significant technical contributions furthering the development of networking in the industry at large. 6 Mr.Khan
    • Why Networking?Sharing information — i.e. data communication  Like this Mr.Khan 7
    • Uses of networks:- Network allows user to share program and data simultaneously. Network allows users to share peripheral devices. Network allows user to share email through network. 8 Mr.Khan
    • Example 9 Mr.Khan
    • Types of networks Local Area Network(LANs) Wide Area Network (WANs) Metropolitan Area Network(MANs) Campus Area Network(CANs) Home Area Network(HANs) Intranet and Extranet 10 Mr.Khan
    • Local Area network Its is digital communication system capable of interconnecting a large number of computer terminals and devices with in a limited area. Its speed is faster than WANs. But is small in covering area. 11 Mr.Khan
    • For example 12 Mr.Khan
    • Wide area network Its is digital communication system capable of interconnecting a large number of computer terminals and devices through different cities. Its is slower than WAN. 13 Mr.Khan
    • For example 14 Mr.Khan
    • Metropolitan areanetwork A MANs connect a geographical area larger than LAN but LESS than WAN such as city with dedicated or high performance hardware. Mobile phones system based on MANs. 15 Mr.Khan
    • For example 16 Mr.Khan
    • Campus Area Network A CANs follow the same principle as LANs work. With a CAN different campus offices and organization can be linked together. 17 Mr.Khan
    • For example 18 Mr.Khan
    • Home area network A home network (HANs) is a network contained a person’s digital devices from multiple computer and devices such as Printer Telephones DVDs 19 Mr.Khan
    • For example 20 Mr.Khan
    • Intranet and extranet Its is privately own-secure business network based on internet technology not necessarily to the internet. Information is available to all employees. 21 Mr.Khan
    • Extranet Its combination of multiple intranets. Intranets of different companies are connected each other to share data and information. 22 Mr.Khan
    • Extranet 23 Mr.Khan
    • Intranet 24 Mr.Khan
    • How network are structured ? Following are the ways to form a network. Client/server Networks. Peer to Peer Networks. Hybrid Network. 25 Mr.Khan
    • Client/server Networks Inthis type of network one or more computer are dedicated server and the remaining computer works as client. The client are all other computers on the network. 26 Mr.Khan
    • advantages• Advantages of client/server networks • Facilitate resource sharing – centrally administrate and control • Facilitate system backup and improve fault tolerance • Enhance security – only administrator can have access to Server 27 Mr.Khan
    • Disadvantages• Disadvantages of client/server networks • High cost for Servers • Need expert to configure the network • Introduce a single point of failure to the system 28 Mr.Khan
    • For example 29 Mr.Khan
    • Peer to peer network In this network every computer plays a role of server or client depending upon the nature of communication . All computers have equal rights. No one computer can control over other computer. 30 Mr.Khan
    • advantages• Advantages of peer-to-peer networks: • Low cost • Simple to configure • User has full accessibility of the computer Mr.Khan 31
    • Disadvantages of peer-to-peero May have duplication in resources Difficult to uphold security policy Difficult to handle uneven loading Mr.Khan 32
    • For example 33 Mr.Khan
    • Hybrid network Ithas the combined feature of both client and peer to peer networks The user take advantage of both networks. 34 Mr.Khan
    • advantages Its provide both the facility of peer to peer model and client server modelDISADVANTAGE Hard ware cost . Maintenance. 35 Mr.Khan
    • For example 36 Mr.Khan
    • Network topologies ____” The scheme of joining computer in a network is called topology___” 37 Mr.Khan
    • Types of topologies Bus Topology Ring Topology Star Topology Tree Topology Mesh Topology 38 Mr.Khan
    • Bus Topology In bus topology all the computer are connected in the series with a common communication medium. The communication medium is called BUS. Bus is used in LAN because It is To installed. If the one node of bus fail then the whole network will be destroy. 39 Mr.Khan
    • For example 40 Mr.Khan
    • Ring topology In ring topology every device has exactly two neighbor for communication purpose and the last computer is connected to the first computer all the computer are connected in ring shape. A failure in cable or a device breaks the loop and the entire network fails. 41 Mr.Khan
    • For example 42 Mr.Khan
    • Star topology All the computer are connected to central HUB OR Switch. Twisted pair cable is used in star topology. Its is mostly use in LAN because it is easy to maintain . If the HUB or SWITCH or fail then entire network becomes fail. 43 Mr.Khan
    • For example 44 Mr.Khan
    • Tree topology Tree topology integrates the multiple star topologies together on to a bus all the computer are connected in such a way to form tree like structure. It has combined feature of STAR and BUS topology. It is difficult to configure. 45 Mr.Khan
    • For example 46 Mr.Khan
    • Mesh topology In mesh topology every computer directly connected to every other computer on the network. Mesh topology used in WAN. The installation of mesh topology is difficult. Its performance is not affected with the heavy transmission of data. 47 Mr.Khan
    • For example 48 Mr.Khan
    • Protocols Protocols are the rules to exchange data between two devices.Types of Protocols: Ethernet Token Ring ARCnet DSL TCP/IP 49 Mr.Khan
    • Ethernet Its is most commonly used in LAN protocols. Ethernet is used in BUS topology with high speed network cable. It is relatively simple and cheaper. All the computer in Ethernet using same cable to send or receive data. 50 Mr.Khan
    • Ethernet cable Ethernet converter 51 Mr.Khan
    • Token ring Token ring passing protocols is used in ring topology. A token is an electronic signal. The token ring is associated with IBM (international Business Machines) Which worked with the concept of ring network 52 Mr.Khan
    • Token passing technology 53 Mr.Khan
    • ARCnet Arc net stands for Attached Resource Computer Network. It used either pair or co-axial cable. The original ARCnet protocol was very slow ARCnet is inexpensive, reliable, easy to setup and easy to expand 54 Mr.Khan
    • sadadasdasdCo-axial cable Mr.Khan 55
    • TCP/IP TCP/IP stand for Transmission Control Protocol/Internet Protocol. It is WAN protocol. Two different types of computer connect each other using this protocol. TCP/IP differs for different computers. Mr.Khan 56
    • ISDN ISDN stands for Integrated Services Digital Network. ISDN modem is different from dial up modem It provides better transmission rate Mr.Khan 57
    • ISDN MODEM DAIL-UP MODEM Mr.Khan 58
    • DSL DSL stands for Digital Subscribe Line. It provides high speed transmission of data over telephone line. It is alternative of isdn modem. Its is use every where in office, homes etc. Mr.Khan 59
    • DSL MODEM Mr.Khan 60
    •  Summary of Presentation What is network? Uses of networks History of networking Types 0f networking How networks are structured? Network Topologies Network Protocols 61Mr.Khan
    • 62Mr.Khan