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Edit Comment Close Premium member Presentation Transcript NETWORK TOPOLOGIES: Ajay Indian,IIMS Bareilly. 1 NETWORK TOPOLOGIES Bus Topology Ring Topology Star Topology tree topology Token Ring Ethernet CDDI FDDINETWORK TOPOLOGIES: Ajay Indian,IIMS Bareilly. 2 NETWORK TOPOLOGIES NETWORK TOPOLOGY is the geometric arrangement of a computer system. OR The shape of a local-area network (LAN) or other communications system. Topologies are either physical or logical. There are four principal topologies used in LANs- include bus, star, ring and tree.Bus Topology: Ajay Indian,IIMS Bareilly. 3 Bus Topology All devices are connected to a central cable, called the bus or backbone. Bus networks are relatively inexpensive and easy to install for small networks. Ethernet systems use a bus topology.Star Topology: Ajay Indian,IIMS Bareilly. 4 Star Topology All devices are connected to a central hub . Star networks are relatively easy to install and manage, but bottlenecks can occur because all data must pass through the hub.Ring Topology: Ajay Indian,IIMS Bareilly. 5 Ring Topology All devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it. Ring topologies are relatively expensive and difficult to install, but they offer high bandwidth and can span large distances.Tree Topology: Ajay Indian,IIMS Bareilly. 6 Tree Topology A tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable.Slide 7: Ajay Indian,IIMS Bareilly. 7 These topologies can also be mixed. For example, a bus-star network consists of a high-bandwidth bus, called the backbone, which connects a collections of slower-bandwidth star segments.Token Ring: Ajay Indian,IIMS Bareilly. 8 Token RingToken Ring: Ajay Indian,IIMS Bareilly. 9 Token Ring In networking, a token is a special series of bits that travels around a token-ring network. As the token circulates, computers attached to the network can capture it. The token acts like a ticket, enabling its owner to send a message across the network. There is only one token for each network, so there is no possibility that two computers will attempt to transmit messages at the same time. A type of computer network in which all the computers are arranged (schematically) in a circle.Token Ring: Ajay Indian,IIMS Bareilly. 10 Token Ring A token , which is a special bit pattern, travels around the circle. To send a message, a computer catches the token, attaches a message to it, and then lets it continue to travel around the network. Token Passing : A type of CAM Short for c hannel a ccess m ethod , a protocol for how data is transmitted in the bottom two layers of the OSI model. CAMs describe how networking systems put data on the network media, how low-level errors are dealt with, and how the network polices itself.Token Ring: Ajay Indian,IIMS Bareilly. 11 Token Ring Polling, contention and token passing are three examples of CAMs. ). Token passing uses a token, or series of bits, to grant a device permission to transmit over the network. Whichever device has the token can put data into the network. When its transmission is complete, the device passes the token along to the next device in the topology. System rules in the protocol specifications mandate how long a device may keep the token, how long it can transmit for and how to generate a new token if there isn't one circulating.Ethernet: Ajay Indian,IIMS Bareilly. 12 Ethernet A local-area network (LAN) architecture developed by Xerox Corporation in cooperation with DEC and Intel in 1976. Ethernet uses a bus or star topology and supports data transfer rates of 10 Mbps. The Ethernet specification served as the basis for the IEEE 802.3 standard , which specifies the physical and lower software layers. Ethernet uses the CSMA/CD access method to handle simultaneous demands. It is one of the most widely implemented LAN standards.Ethernet: Ajay Indian,IIMS Bareilly. 13 Ethernet A newer version of Ethernet, called 100Base-T (or Fast Ethernet), supports data transfer rates of 100 Mbps. And the newest version, Gigabit Ethernet supports data rates of 1 gigabit (1,000 megabits) per second. Ethernet Designations: IEEE 802.3 specifies a series of standards for telecommunication technology over Ethernet local-area networks. The following chart details the different Ethernet flavors and how they differ from one another.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 14 Ethernet Designations:- 10Base-2: 10 Mbps baseband Ethernet over coaxial cable with a maximum distance of 185 meters. Also referred to as Thin Ethernet or Thinnet or Thinwire . 10Base-5: 10 Mbps baseband Ethernet over coaxial cable with a maximum distance of 500 meters. Also referred to as Thick Ethernet or Thicknet or Thickwire . 10Base-36: 10 Mbps baseband Ethernet over multi-channel coaxial cable with a maximum distance of 3,600 meters.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 15 Ethernet Designations:- 10Base-F: 10 Mbps baseband Ethernet over optical fiber. 10Base-FB : 10 Mbps baseband Ethernet over two multi-mode optical fibers using a synchronous active hub. 10Base-FL: 10 Mbps baseband Ethernet over two optical fibers and can include an optional asynchronous hub. 10Base-FP: 10 Mbps baseband Ethernet over two optical fibers using a passive hub to connect communication devices.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 16 Ethernet Designations:- 10Base-T: 10 Mbps baseband Ethernet over twisted pair cables with a maximum length of 100 meters. 10Broad-36: 10 Mbps baseband Ethernet over three channels of a cable television system with a maximum cable length of 3,600 meters. 10Gigabit Ethernet: Ethernet at 10 billion bits per second over optical fiber. Multimode fiber supports distances up to 300 meters; single mode fiber supports distances up to 40 kilometers .Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 17 Ethernet Designations:- 100Base-FX: 100 Mbps baseband Ethernet over two multimode optical fibers. 100Base-T: 100 Mbps baseband Ethernet over twisted pair cable. 100Base-T2: 100 Mbps baseband Ethernet over two pairs of Category 3 or higher unshielded twisted pair cable.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 18 Ethernet Designations:- 100Base-T4: 100 Mbps baseband Ethernet over four pairs of Category 3 or higher unshielded twisted pair cable. 100Base-TX: 100 Mbps baseband Ethernet over two pairs of shielded twisted pair or Category 4 twisted pair cable. 100Base-X A generic name for 100 Mbps Ethernet systems. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
network topologies AjayIndian Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 812 Category: Education License: All Rights Reserved Like it (2) Dislike it (0) Added: April 28, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: samdomnic (9 month(s) ago) hmm.! i understand easily by seeing this ppt Thank You Saving..... Post Reply Close Saving..... Edit Comment Close By: elohab2008 (10 month(s) ago) very good.tkank you :) Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript NETWORK TOPOLOGIES: Ajay Indian,IIMS Bareilly. 1 NETWORK TOPOLOGIES Bus Topology Ring Topology Star Topology tree topology Token Ring Ethernet CDDI FDDINETWORK TOPOLOGIES: Ajay Indian,IIMS Bareilly. 2 NETWORK TOPOLOGIES NETWORK TOPOLOGY is the geometric arrangement of a computer system. OR The shape of a local-area network (LAN) or other communications system. Topologies are either physical or logical. There are four principal topologies used in LANs- include bus, star, ring and tree.Bus Topology: Ajay Indian,IIMS Bareilly. 3 Bus Topology All devices are connected to a central cable, called the bus or backbone. Bus networks are relatively inexpensive and easy to install for small networks. Ethernet systems use a bus topology.Star Topology: Ajay Indian,IIMS Bareilly. 4 Star Topology All devices are connected to a central hub . Star networks are relatively easy to install and manage, but bottlenecks can occur because all data must pass through the hub.Ring Topology: Ajay Indian,IIMS Bareilly. 5 Ring Topology All devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it. Ring topologies are relatively expensive and difficult to install, but they offer high bandwidth and can span large distances.Tree Topology: Ajay Indian,IIMS Bareilly. 6 Tree Topology A tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable.Slide 7: Ajay Indian,IIMS Bareilly. 7 These topologies can also be mixed. For example, a bus-star network consists of a high-bandwidth bus, called the backbone, which connects a collections of slower-bandwidth star segments.Token Ring: Ajay Indian,IIMS Bareilly. 8 Token RingToken Ring: Ajay Indian,IIMS Bareilly. 9 Token Ring In networking, a token is a special series of bits that travels around a token-ring network. As the token circulates, computers attached to the network can capture it. The token acts like a ticket, enabling its owner to send a message across the network. There is only one token for each network, so there is no possibility that two computers will attempt to transmit messages at the same time. A type of computer network in which all the computers are arranged (schematically) in a circle.Token Ring: Ajay Indian,IIMS Bareilly. 10 Token Ring A token , which is a special bit pattern, travels around the circle. To send a message, a computer catches the token, attaches a message to it, and then lets it continue to travel around the network. Token Passing : A type of CAM Short for c hannel a ccess m ethod , a protocol for how data is transmitted in the bottom two layers of the OSI model. CAMs describe how networking systems put data on the network media, how low-level errors are dealt with, and how the network polices itself.Token Ring: Ajay Indian,IIMS Bareilly. 11 Token Ring Polling, contention and token passing are three examples of CAMs. ). Token passing uses a token, or series of bits, to grant a device permission to transmit over the network. Whichever device has the token can put data into the network. When its transmission is complete, the device passes the token along to the next device in the topology. System rules in the protocol specifications mandate how long a device may keep the token, how long it can transmit for and how to generate a new token if there isn't one circulating.Ethernet: Ajay Indian,IIMS Bareilly. 12 Ethernet A local-area network (LAN) architecture developed by Xerox Corporation in cooperation with DEC and Intel in 1976. Ethernet uses a bus or star topology and supports data transfer rates of 10 Mbps. The Ethernet specification served as the basis for the IEEE 802.3 standard , which specifies the physical and lower software layers. Ethernet uses the CSMA/CD access method to handle simultaneous demands. It is one of the most widely implemented LAN standards.Ethernet: Ajay Indian,IIMS Bareilly. 13 Ethernet A newer version of Ethernet, called 100Base-T (or Fast Ethernet), supports data transfer rates of 100 Mbps. And the newest version, Gigabit Ethernet supports data rates of 1 gigabit (1,000 megabits) per second. Ethernet Designations: IEEE 802.3 specifies a series of standards for telecommunication technology over Ethernet local-area networks. The following chart details the different Ethernet flavors and how they differ from one another.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 14 Ethernet Designations:- 10Base-2: 10 Mbps baseband Ethernet over coaxial cable with a maximum distance of 185 meters. Also referred to as Thin Ethernet or Thinnet or Thinwire . 10Base-5: 10 Mbps baseband Ethernet over coaxial cable with a maximum distance of 500 meters. Also referred to as Thick Ethernet or Thicknet or Thickwire . 10Base-36: 10 Mbps baseband Ethernet over multi-channel coaxial cable with a maximum distance of 3,600 meters.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 15 Ethernet Designations:- 10Base-F: 10 Mbps baseband Ethernet over optical fiber. 10Base-FB : 10 Mbps baseband Ethernet over two multi-mode optical fibers using a synchronous active hub. 10Base-FL: 10 Mbps baseband Ethernet over two optical fibers and can include an optional asynchronous hub. 10Base-FP: 10 Mbps baseband Ethernet over two optical fibers using a passive hub to connect communication devices.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 16 Ethernet Designations:- 10Base-T: 10 Mbps baseband Ethernet over twisted pair cables with a maximum length of 100 meters. 10Broad-36: 10 Mbps baseband Ethernet over three channels of a cable television system with a maximum cable length of 3,600 meters. 10Gigabit Ethernet: Ethernet at 10 billion bits per second over optical fiber. Multimode fiber supports distances up to 300 meters; single mode fiber supports distances up to 40 kilometers .Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 17 Ethernet Designations:- 100Base-FX: 100 Mbps baseband Ethernet over two multimode optical fibers. 100Base-T: 100 Mbps baseband Ethernet over twisted pair cable. 100Base-T2: 100 Mbps baseband Ethernet over two pairs of Category 3 or higher unshielded twisted pair cable.Ethernet Designations:-: Ajay Indian,IIMS Bareilly. 18 Ethernet Designations:- 100Base-T4: 100 Mbps baseband Ethernet over four pairs of Category 3 or higher unshielded twisted pair cable. 100Base-TX: 100 Mbps baseband Ethernet over two pairs of shielded twisted pair or Category 4 twisted pair cable. 100Base-X A generic name for 100 Mbps Ethernet systems.