NetworkTopology and Wiring
NetworkTopology and Wiring
Whatare the network topologies? How are they described?
Networktopologies refer to various ways through which devices (nodes) areconnected in a network in a logical or physical manner. Networktopology may also be used to describe how data is transferred betweenthe devices or nodes (Lemeire, Dirkz, & Coliti, 2008). Logicaland physical are the chief types of network topologies. Logicaltopology chiefly focus on the pattern through which data istransferred between nodes while physical topology mainly emphasizeson the physical layout of the connected nodes and devices. There arefive basic models through which logical and physical networktopologies can be classified into. These models include star, bus,mesh, ring, and tree topology (Lemeire et al., 2008).
Whatmakes each topology different from other topologies?
Eachof theaforementionedtopologies has their own uniqueness and differences as describedbelow.
Meshtopology: It has nodes is connected to some or all other nodes thatare present in the network in a direct manner. This connectioncreates some redundancy in the network hence, making it highlytolerant to fault.
Bustopology: In this type of topology all devices and nodes areconnected to the same transmission line or backbone in a sequentialway. It is best suitable for temporary networks that do not have manynodes. Hekmat (2006) notes that the failure of one node in bustopology does not have any effect on the rest of the bus network.However, the performance in the present network has a high likelihoodof slowing down in the presence of heavy network traffic or when morenodes are added.
Ringtopology: Any device or node present in the network is connected toone backbone just like in the bus topology however, its backboneends at the staring node forming a ring. It is neither affected byfurther addition of nodes nor heavy network traffic since its networkhas no data collisions. It is also easy to install and expand thiskind of topology. However, ring topology is the hardest topology totroubleshoot since it is extremely hard to track down any emergingfailure in the ring (Hekmat, 2006)
Startopology: This is the most popular and preferred topology. It has acentral device that connects all nodes present in the network.Downtime in the network is rarely caused by failure of individualcables or nodes however, there is a high likelihood that it can becaused by the failure of a central device. Any further addition ofnodes does not affect the performance of the network in an immensemanner since data does not pass through unnecessary nodes. However,it is expensive to install this form of topology since it requiresextra hardware like switches and hubs (Hekmat, 2006).
Treetopology: Physically, this topology is similar to both star and bustopologies since its low-level nodes connect using star topology andits network backbone has a high likelihood of having a bus topology.
Whattypes of use make the topologies the best choice for the healthcareorganization?
Managementof informationinhealthcare requires the use of network topologies. This is becausemost medical facilities, like operation theatre and record ofpatients, rely heavily on networked electronics. Also regulationsthat require use of high levels of data security with an aim ofprotecting the privacy of patients require the use of networktopologies.
Theneed to improve safety and quality as well as reduce costs inhealthcare facilities makes the use of network topology the bestchoice. Topologies help create an integrated system of care that playa key role in connecting patients, support organizations, payers, andclinicians (Hekmat, 2006). As a result, all shareholders in ahealthcare exchange information in an efficient and effective manner.Patients need to access necessary information on their clinicians andtheir own health. Network topology helps patients to connect withtheir physicians as well as access information about treatmentprotocols and alternatives. Undeniably, network topologies play asignificant role in facilitating the sharing of information acrossvarious departments of healthcare. They create a proper network thatprovides a platform for the exchange of accurate, consistent, andreliable patients’ information.
Again,network topologies facilitate the creation of a healthcare ecosystemneeded for the sharing of information amongst many healthcareentities in a secure manner. This is because, currently, patientsreceive care and treatment from multiple clinics and physicians. Aconnected healthcare ecosystem further ensures integration of allnetworked resources of medical information, process optimization, andknowledge support in a healthcare organization.
Howdoes the size of the organization have an effect on topology choices?
Thesize of an organization plays a key role in determining the type ofnetwork topology to use. Poorly choice of network topology has a highlikelihood of presenting difficulties as demands for brandwidth andnumber of computer increases (Lemeire et., 2008). Hub and spokenetwork topology is the best for large organizations since it has ahigh capacity to connect regional as well as local hubs in aneffective way. On the other hand, topology with a single data centerand high availability is recommendable for small-to-medium sizedorganizations.
Hekmat,R. (2006). As-hocNetworks: Fundamental Properties and Network Topologies: FundamentalsProperties and Network Topologies.New York: Springer Science & Business Media.
Lemeire,J Dirkz, E, & Colitti, W. (2008). Modeling the Performance ofCommunication Scheme of Network Topologies. ParallelProcessing Letters,18 (2), 205-220