Essay Network Topologies

I would define a network as a group of computers that are connected together with physical cables or wireless capabilities along with a series of peripheral devices such as, routers, switches, servers or printers etc…for sharing data, software and other resources between different users. When talking about bandwidth, it is a range of frequencies or wavelengths in which data is transmitted. With digital devices, bandwidth is calculated by bits per second or bytes per second and with analog devices, by cycles per second, or hertz.

The first topology represented is the Ring topology. A ring topology is a network in which all traffic moves in only one direction because of this the speed is faster than some other topologies, even as network traffic increases. Due to the configuration of a ring topology the resources of the network are available to every device and the cost of setup can be lower than some of the more complicated topologies. However, the configuration of the Ring topology is also a disadvantage. Since a file sent to any device within the network has to pass through every device, if one device fails the entire network goes down. (Ethernetpedia)

Exercise 2.3.2: A network topology is the arrangement of a computer network, how they should be connected.

In the transport topology, each advanced PC is joined with a primary link alluded to as the transport. Hence, as a result, each computerized PC is specifically associated with each distinctive advanced PC inside of the system.

3. NETWORK (layer 3) – Provides switching and routing technologies, creating logical paths, known as virtual circuits, for transmitting data from node to node.

Taking this class I have learned good amount of terms we use in IT sector. From ch1 and 2 have help me allot more in depth about its technology and mostly understanding how each things work and the pros and cons about security and what are useful gadgets to have. Topology was the term I wasn’t familiar with but the concept was always around me weather at school library or labs and at work place. There is physical and logical topology, physical topology we use at home and mostly see in various work station in our life time. It mostly hardware and how the end devices interconnect. When two computers connect directly with one another without a central device, with a wires it be called physical topology. Logical topology is software and does contrast with physical side but logical define

Simply put, a topology is that the layout of a network. There are extremely 3 basic kinds of topologies. they're Star, Bus, and Ring. Let me justify them to you.

A goal of redundant topologies is to eliminate network down time caused by a single point of failure. All networks need redundancy for enhanced reliability. Network reliability is achieved through reliable equipment and network designs that are tolerant to failures and faults. Networks should be designed to reconverge rapidly so that the fault is bypassed.

The current network is a fairly early design called an Ethernet Bus network. A bus network Topology is an architecture in which a set of clients are connected via a shared communications line, called a bus. Each of the 3 sites utilizes the same configuration of

In order to provide speed and reliability, large and enterprise-level networks today are typically constructed in multiple layers. They are the access layer, also called the network edge layer, the aggregation or distribution layer; and the network core layer. The access layer is usually a mesh of network switches, linked to other switches in the aggregation layer, which in turn is linked to the core.

The main topologies are Bus (All Workstations are connected to one line), Star (All Workstations are connected to a central hub), Ring (All workstations are connected to fellow workstations left and right of them) and Mesh (All workstations are connected to each other). A lot of topologies are designed to allow more workstations to be added at a later date. But a lot of topologies also have weaknesses, such as the Bus topology and the Ring topology, which would both break down if a node was to fail.

A network is a group of two or more connected computers. Connected computers are computers which can exchange files, messages and other information with each other.

Naik, A. (2011, March 23). Star Topology Advantages and Disadvantages. Retrieved February 15, 2014, from Buzzle: http://www.buzzle.com/articles/star-topology-advantages-and-disadvantages.html

First, we need to understand the difference between logical and physical topographical layouts. Logical layouts are how the data move across the network and physical layouts are how the network relates to its wires and hardware (Kevin Wallace, 2012). Note that how the data moves through the network is not going to be the same as how the data is physically structured (Michael Harris, 2008). The most coming physical topologies are Bus, Star, and Star-Wire Ring (Kevin Wallace, 2012). The most coming logical topologies are Bus, Ring, and Star (Kevin Wallace, 2012).

Speed: The speed of the network depends on how the network is built amongst other factors. The 10 base5 backbone infrastructure has a transmission speed of 10Mbps. The backbone is connected using bus topology, the bus being a shared medium causes all nodes to share the maximum data rate, depending on how many users are trying to access the network at a time (Frenzel, 2009). This means that the maximum aggregate throughput is 10Mbps. Furthermore, the use of hubs and repeaters puts all the nodes on the network in one large collision domain and because hubs and repeaters do not learn mac addresses they encourage broadcasts which takes up bandwidth that could be used to transfer frames. In addition all nodes on the network operate in half duplex mode. With half-duplex transmission, a node cannot both transmit and receive at the same time. If two nodes try to transmit at the same time it leads to a collision and the two packets are discarded. All these factors serve to slow down the network.