...MADONDO K.T R159819H HBBSP Information processing; Network Topologies Network topology is the arrangement of various elements (links, nodes etc). It is essentially the topological structure of a network and can be depicted physically or logically. Physical topology being the configuration of cables, computers and other peripherals whilst logical topology illustrates how data flows within a network regardless of its physical design. Types of network topologies include bus, star, mesh and ring topologies. Bus networks use a common backbone to connect all devices. A single cable, the backbone acts as a shared communication medium that devices tap into with an interface connector. A device wanting to communicate with another device on the network sends a broadcast message onto the wire that all devices see but only the intended recipient actually accepts and processes the message. The table below summarizes advantages and disadvantages of bus topology. Advantages Disadvantages It is cheap , easy to handle and implement Requires less cable It is best suited for small networks The cable length is limited It can only perform well for a limited number of nodes Network effectively becomes unusable if backbone cable fails In a ring network, every device has exactly two neighbors for communication purposes. All messages travel through a ring in the same direction either clockwise or counterclockwise. To implement a ring network we use Token Ring technology. A token or small...
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...Network Topologies Mesh topology, in a mesh network devices are connected with many redundant interconnections between network nodes. Every node has a connection to every other node in the network. There are two types of mesh topologies. Full mesh topology occurs when every node has the circuit connecting to every other node in the network. Full mesh is very expensive to implement but yields the greatest amount of redundancy, so in the event that one of those nodes fails; network traffic can be directed to any of the other nodes. Full match is usually reserved for backbone networks. Partial mesh topology is less expensive to implement and yields less redundancy than. With partial mash some nods are organized in a full mesh team but others are only connected to one or two in the network. Partial mashed apology is commonly found in peripheral networks connected to a full mesh backbone. Bus Topology; the bus apology is the simplest network topology. Also known as linear bus, and all this topology all computers are connected to a contiguous cable or a cable joined together to make it contiguous. Ethernet is the common example of a bus topology. Each computer determines when the network is not busy and transmits data as needed. Computers in a bus apology listen only for transmission from other computers; they do not repeat or forward the transmission on the other computers. The signal in a bus topology travels to both ends of the cable. To keep the signal from bouncing back and forth...
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...A Star Network Topology is best suited for smaller networks and works efficiently when there is limited number of nodes. One has to ensure that the hub or the central node is always working and extra security features should be added to the hub because it s the heart of the network. this topology is best for smaller network and work fine the is not much or limited number of nodes. the heart of the network is central node that always working and extra security features. Mesh Network is a network where all the nodes are connected to each other and is a complete network. In a Mesh Network every node is connected to other nodes on the network through hops(hops is names for every node that connected to other node in mesh topology . Some are connected through single hops and some may be connected with more than one hope. While the data is traveling on the Mesh Network it is automatically configured to reach the destination by taking the shortest route which means the least number of hops. Data travels by hopping from one node to another and then reaches the destination node in a Mesh Topology Network. An example of a Mesh Network is the Mobile Adhoc Network or MANet. The entire Mesh Network is continuously connected. Being completely connected does not mean that Mesh Network is dependant on each and every node of the network. Even if one node fails in the Mesh Network the network finds an alternate route to transfer the data. It is called the self healing technology where...
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...Assignment.Network Topology Paper Network topology is the arrangement of the various elements (links, nodes, etc.) of a computer network.[1][2] Essentially, it is the topological[3] structure of a network, and may be depicted physically or logically. Physical topology refers to the placement of the network's various components, including device location and cable installation, while logical topology shows how data flows within a network, regardless of its physical design. Distances between nodes, physical interconnections, transmission rates, and/or signal types may differ between two networks, yet their topologies may be identical. A good example is a local area network (LAN): Any given node in the LAN has one or more physical links to other devices in the network; graphically mapping these links results in a geometric shape that can be used to describe the physical topology of the network. Conversely, mapping the data flow between the components determines the logical topology of the network. Contents * 1 Topology * 1.1 Point-to-point * 1.2 Bus * 1.3 Star * 1.4 Ring * 1.5 Mesh * 1.6 Tree * 1.6.1 Advantages * 1.6.2 Disadvantages * 1.7 Hybrid * 1.8 Daisy chain * 2 Centralization * 3 Decentralization * 4 See also * 5 References * 6 External links Topology There are two basic categories of network topologies:[4] 1. Physical topologies 2. Logical topologies The shape of...
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...3 Network Topologies. Hierarchical Star. the star network is one of the most popular network topology. In this network, all the nodes are connected individually to one common hub. In other words, it is a network topology wherein transmission stations are connected to the central node in such a manner that the design resembles the shape of a star. Basically, the star topology design is quite similar to a bicycle wheel with spokes radiating from the center. Advantages and Disadvantages It is very easy to install and manage star network topology as it is the simplest of the lot when it comes to functionality. It is easy to troubleshoot this network type as all computers are dependent on the central hub which invariably means that any problem which leaves the network inoperable can be traced to the central hub. In star topology, the data packets don't have to make their way through various nodes which makes sure that the data transfer is fast. The foremost problem with star network topology is the fact that it is highly dependent on the functioning of central hub. The size of the network is dependent on how many connections can be made to the hub. This network type requires more cable as compared to linear bus topology which means the expenses incurred would be relatively high. The performance of the entire network is directly dependent on the performance of the hub. If the server is slow, it will cause the entire network to slow down. Bus Topology Bus Topology is the...
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...Hierarchical star topology is where all computers are connected to a single, centrally located point. The central point is usually a hub of servers and switches located in the main equipment room. If there is a problem with the central hub then the network will not be able to work. It can bring the whole system down. By having everything centralize, it makes troubleshooting and reconfiguration simpler. It is usually a home networks that uses a hub or switch. Star Bus topology is the simplest of the network topologies. All of the nodes are connected to the single cable. The central cable is the backbone of the network. All of the workstations communicate with each other through the bus. The advantage to a bus topology is that it is easy to set up and is cost less than other topologies. It uses less cable due to the restriction of the length of cable. The disadvantages are the limit amount of devices to be connected. It is harder to troubleshoot when there is a problem. Maintenance will cost more in the long run. Bus Ring Topology is where all of the computers are connected together that it creates a closed loop. Each of the workstation can communicate with its neighbor by two other components. The data travels in one direction in the network. The advantage of ring topology is all of the traffic flows in one direction at high speed. Each computer will have equal access to resources. The disadvantages are that it can be slower than a star topology and if one...
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...Institute Network Topology Tom McKellips NT 1310 Aaron Bright October 10, 2013 Network Topology The following paper is going to discuss the three different types of network topologies, hierarchical star, bus, and ring. Each one of these topologies has different uses in the way we set up networks. For each type of topology there are going to be strong points as well as some weak points. The first one to be discussed is going to be hierarchical star. A hierarchical star is a network that has a central point such as an equipment room where all computers, routers, printers, and other devices are connected to. This type of network is mainly used to install a network throughout a large building or school. A star network is the easiest to install and the most universal, but if something happens to the central point than the whole network goes down. The next paragraph will discuss the bus type of network topology. A bus is a network that all devices are connected to a contiguous cable known as a backbone. A bus is used to link multiple star networks together, for example, a building with more than one floor each equipment room is connected by a single backbone to link the networks together. The bus has to have a terminator (usually a resistor) on both ends to keep the signal from bouncing back and forth. If the contiguous cable gets damaged than the whole bus network goes down. The last type of network topology to discuss is the ring. A ring topology requires that...
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...Topologies and Network Technology NTC/361 Monday, August 8, 2011 Thomas Krawczyk Topologies and network technology In every project, it is important to have a goal, and that goal should be the foundation on which a project team spring into action. The foundation should involve an infrastructural plan, and the usability of the components of the infrastructure. A project plan, as in any other plan, should outline the premise of the project and answer some basic questions like why a particular project is being proposed, what the project will accomplish, who will be the members of the project team and their responsibilities, and when the project will start and terminate. When it comes to a network design, the same principle of project planning applies, and a network topology is an important part of a successful network design. Network topology is the elemental organization of a network; it dictates the media that the network uses, the type of channel it accesses, the architecture of the network, and its operating speed (Tomsho, Tittel, & Johnson, 2004). A network topology deals with the physical layout of the network’s computers, cables, and many more components; a network topology also deals with how the components communicate with each other (Tomsho, et al., 2004). A network topology gives a diagrammatical picture of the network’s physical interconnections. A network topology can be discussed in its physical and logical forms; the physical form deals with the physical...
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...Assignment 1. Network Topology Paper Hierarchical layout defines how the network topology is structured physically and logically. In physical topology all devices and components are placed in various locations depending on the layout. Logical topology is the flow of data throughout the layout. There are many variations of network topologies that can be implemented. The most common network topologies are star, bus, and ring. Star topology is setup with each host connected to a central hub with a point to point connection. All workstation and other devices are connected to the central hub or switch. That switch is the server and all devices connected to it are clients. All resources must be connected to a central device in order for it to be a star topology. Data that travels in the network passes through the central hub and causes it to act as a signal repeater. The advantages of a star topology are that it is easy to design and versatile in planting additional nodes. The major disadvantage of the star topology is that the hub becomes the single point of failure. Bus topology utilizes a single bus cable to connect each computer and the data from the source travels in both directions to all devices on the bus cable until it finds the specific client. Data is only accepted if the addresses matched up and if it doesn’t match, it’s simply ignored. The last computer connected to the bus needs to be terminated to prevent echoes in the network. Having a single line for bus topology makes...
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...Network Topologies First off network topologies are the arrangement of the various elements (links, nodes, etc.) of a computer or biological network. This helps with communication and network information processing. This is a major part of today’s technology and is used by big business as well as home and personal use. Hierarchical star topology is when all computers are connected to a single central located point. The single point is usually a hub of servers and switches that are located in an equipment room. If it’s a commercial building it will be a horizontal cross- connection that would have a work group switch and it would be in a telecommunication room. Benefits of hierarchical star topology is the straight connection and it is easy to install and reconfigure. No disruptions to the network when connecting or removing devices, easy to detect faults and to remove parts. Disadvantages are if hub fails the whole system will die. This also requires more cable then bus topology. If the hub, switch, or concentrator fails, nodes attached are disabled. But over all my opinion this is the best topology. Bus topology is the simplest network topology. All computers are connected to a single cable that makes a contiguous Ethernet. Computers determine when network is not busy and transmits data as needed. Bus computers listen to transmissions from other computers and do not forward or repeat transmissions to other computers. Advantages of bus it is the cheapest topology. It requires...
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...Network Topology Star Topology has its own cable that connects to a central hub or switch, multipoint repeater, or even a Multistation Access Unit. Data passes through the hub to reach other devices on the network. A hub, switch, or computer acts as a router to transmit messages this is in its simplest form. Star reduces the chance of failure in the network by connecting all of the systems to a central node. Star is the most common networks because of the ease of configuring and troubleshooting it. If a wire goes bad only one node will go down which prevents a huge impact on productivity. However, because a star involves a central hub or switch as well as a lot more cabling it cost more to implement. Bus topologies computers are connected to a single cable or trunk or backbone by a transceiver either directly or by using a short drop cable. All ends of the cable must be terminated, that is plugged into a device such as a computer or terminator. The number of computer affect the performance since only one computer at a time can send data the more computers you have on the network the more computers there will be waiting to send data. If there is a break in the line all computers will fail. Bus is inexpensive and very easy to install. They are limited in security and number of devices that can be on the network. Bus can only transmit slowly at 10 \Mb/s. Ring topology network computers are connected by a single loop of cable, the data signals travel around the loop in one...
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...Network Topology Paper Assignment 1 Unit 3 Mr. Swailes The study of Network Topology recognizes 8 basic topologies * Point to point * Star * Bus * Mesh * Tree * Hybrid * Daisy chain * Ring Point to point- The simplest topology is the permanent link between two end points Star-in a local area network with a star topology. Each network host is connected to a central hub with a point-to-point connection to a central node called a hub or switch. Bus- In local area networks where Bus Topology is used, each computer is connected to a single Bus cable. A signal from the source travels in both directions to all machines connected on the Bus cable until it finds the intended recipient. If the machine address does not match the intended address for the data, the machine ignores it. However, if the data matches it is accepted. The bad part of this topology is that it has a single point of failure which is the cable and if this happens the whole network can shut down. Mesh-is a fully connected network in which each node is connected to each other. A fully connected network does not need to use switching or broadcasting. However its major disadvantage is that the number of connections grows with the number of nodes. It is extremely impractical for large networks. A two node network is technically a fully connected network. Tree-is a combination of a Bus and Star topology. It is arranged to look like a tree. The advantages are it is scalable...
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...There are many different types of network topologies, but the three most common types are LANs, MANs, and WANs. The LAN topology is probably the most common of the three. The MAN and WAN topologies are used but not nearly as much as the LAN topology is, although the WAN is starting to be used more and more because of the growing population of networks. The LAN (Local Area Network) is used so much because it is used in small areas. Small businesses use LANs a great deal because they are small and they wouldnt need a WAN or a MAN because there business is usually ran out of one or maybe two buildings. You will usually find LANs in buildings, schools, and even in homes at times. Some buildings even have multiple LAN's in them for certain purposes. When designing the layout of a LAN, the party can choose from a selection of different technologies on which to base the main part of their LAN. The technology choices that the party adopts will be a critical part in the way their LAN performs. Two important LAN setups are a network based on Ethernet or Token Ring technology. Besides operating in a small space, LANs have some other distinctive features. LANs are typically owned, controlled, and managed by a single person or organization. A WAN (wide area network) goes across large physical distance. Many times a WAN will go almost around most of the world! The most popular WAN is the Internet. The Internet is one big huge WAN and it is also the most used WAN. A WAN is basically...
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...OSI Model Protocol K. Johnson NTC/361 June 2, 2014 OSI Model Protocol Protocols and standards are important for network designs, they provide a guided format for transferring data. These protocols can be defined by exclusive system or organizations such as American Health Information who oversee Health Information Exchange (HIE). In this essay the OSI model will be examined, especially in the health care field. An Open System Interconnection Model (OSI) is a layered representation guide for network protocol design. The model is distributed the network process into seven layers that performs a different service and protocol. Data communication plays a big part in this system in which protocols plays a part in this process. The process in which protocols are used to allow data communication to take place is that in the technical operation. In this operation data transmitted over the network must broke down into distinct, methodical steps, in which certain actions will take place that must be done within that specific step only. These specific steps contain their own rules, procedures, and protocols that must be passed in order, in the same manner on each computer within the network. According to "The Function of Protocols" (N.D), "In the sending computer, the steps must be executed from the top down, and in the receiving computer the steps must be carried in the opposite order from the bottom up”. Protocols ("The Function Of Protocols", N.D). Sending Computer ...
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...Integrative Network Design Project James Warren NTC/362 July 30, 2012 Andrew Carpenter Integrative Network Design Project This paper will discuss Kudler Fine Foods desire to upgrade their current outdated infrastructure with current technology that will let them stay competitive in today’s market. In order to do this they will need to tie all three of their existing sites together using wireless and VOIP technology. Distributed Computing Currently all three of the Kudlers facilities utilizes a distributed computing system using the same configuration of single server and multiple pc’s, each with a single UPS and 56k modem for connectivity. The computers are connected to an Ethernet backbone (typically a hub that is not very efficient in handling network traffic for many computers) and the 56k modem is the only external connectivity that the sites have. Centralized Computing In order to bring this system up to standards they will need to update to a more centralized computing system which all computing is done on a centrally managed computer system and the users use a dumb terminal (thin client) to connect to these central computers. The cost associated with this has been reduced over the years and was only used previously in enterprise environments but now more businesses are moving over to this type of system. Network Topologies Kudlers three offices use almost identical setups for their servers, POS systems and their site connectivity. They all...
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