{"id":216,"date":"2023-05-16T12:29:22","date_gmt":"2023-05-16T12:29:22","guid":{"rendered":"https:\/\/itnotes.apjsoftwares.com\/?p=216"},"modified":"2023-05-16T12:29:22","modified_gmt":"2023-05-16T12:29:22","slug":"1-4-topologies-with-advantages-disadvantages-bus-ring-star-tree-mesh","status":"publish","type":"post","link":"https:\/\/itnotes.apjsoftwares.in\/index.php\/2023\/05\/16\/1-4-topologies-with-advantages-disadvantages-bus-ring-star-tree-mesh\/","title":{"rendered":"1.4 Topologies with advantages &#038; disadvantages:-Bus, Ring, Star, Tree, Mesh"},"content":{"rendered":"\n<p><strong>What is network topology<\/strong><br><\/p>\n\n\n\n<p>The way in which devices are interconnected to form a network is called network topology. Some of the factors that affect choice of topology for a network are \u2212<\/p>\n\n\n\n<ul>\n<li>Cost \u2212 Installation cost is a very important factor in the overall cost of setting up an infrastructure. So cable lengths, distance between nodes, location of servers, etc. have to be considered when designing a network.<\/li>\n\n\n\n<li>Flexibility \u2212 Topology of a network should be flexible enough to allow reconfiguration of office set up, addition of new nodes and relocation of existing nodes.<\/li>\n\n\n\n<li>Reliability \u2212 Network should be designed in such a way that it has minimum down time. Failure of one node or a segment of cabling should not render the whole network useless.<\/li>\n\n\n\n<li>Scalability \u2212 Network topology should be scalable, i.e. it can accommodate load of new devices and nodes without perceptible drop in performance.<\/li>\n\n\n\n<li>Ease of installation \u2212 Network should be easy to install in terms of hardware, software and technical personnel requirements.<\/li>\n\n\n\n<li>Ease of maintenance \u2212 Troubleshooting and maintenance of the network should be easy.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Bus Topology<\/strong><\/h2>\n\n\n\n<p>Data network with bus topology has a linear transmission cable, usually coaxial, to which many network devices and workstations are attached along the length. Server is at one end of the bus. When a workstation has to send data, it transmits packets with destination address in its header along the bus.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"349\" src=\"https:\/\/itnotes.apjsoftwares.com\/wp-content\/uploads\/2023\/05\/image-30.png\" alt=\"\" class=\"wp-image-217\" srcset=\"https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-30.png 600w, https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-30-300x175.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n\n\n\n<p>The data travels in both the directions along the bus. When the destination terminal sees the data, it copies it to the local disk.<\/p>\n\n\n\n<p><strong>Advantages of Bus Topology<\/strong><\/p>\n\n\n\n<p>These are the advantages of using bus topology \u2212<\/p>\n\n\n\n<ul>\n<li>Easy to install and maintain<\/li>\n\n\n\n<li>Can be extended easily<\/li>\n\n\n\n<li>Very reliable because of single transmission line<\/li>\n<\/ul>\n\n\n\n<p><strong>Disadvantages of Bus Topology<\/strong><\/p>\n\n\n\n<p>These are some disadvantages of using bus topology \u2212<\/p>\n\n\n\n<ul>\n<li>Troubleshooting is difficult as there is no single point of control<\/li>\n\n\n\n<li>One faulty node can bring the whole network down<\/li>\n\n\n\n<li>Dumb terminals cannot be connected to the bus<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Ring Topology<\/h2>\n\n\n\n<p>In ring topology each terminal is connected to exactly two nodes, giving the network a circular shape. Data travels in only one predetermined direction.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"490\" height=\"398\" src=\"https:\/\/itnotes.apjsoftwares.com\/wp-content\/uploads\/2023\/05\/image-31.png\" alt=\"\" class=\"wp-image-218\" srcset=\"https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-31.png 490w, https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-31-300x244.png 300w\" sizes=\"(max-width: 490px) 100vw, 490px\" \/><\/figure>\n\n\n\n<p>When a terminal has to send data, it transmits it to the neighbouring node which transmits it to the next one. Before further transmission data may be amplified. In this way, data traverses the network and reaches the destination node, which removes it from the network. If the data reaches the sender, it removes the data and resends it later.<\/p>\n\n\n\n<p><strong>Advantages of Ring Topology<\/strong><\/p>\n\n\n\n<p>These are the advantages of using ring topology \u2212<\/p>\n\n\n\n<ul>\n<li>Small cable segments are needed to connect two nodes<\/li>\n\n\n\n<li>Ideal for optical fibres as data travels in only one direction<\/li>\n\n\n\n<li>Very high transmission speeds possible<\/li>\n<\/ul>\n\n\n\n<p><strong>Disadvantages of Ring Topology<\/strong><\/p>\n\n\n\n<p>These are some the disadvantages of using ring topology \u2212<\/p>\n\n\n\n<ul>\n<li>Failure of single node brings down the whole network<\/li>\n\n\n\n<li>Troubleshooting is difficult as many nodes may have to be inspected before faulty one is identified<\/li>\n\n\n\n<li>Difficult to remove one or more nodes while keeping the rest of the network intact<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Star Topology<\/strong><\/h2>\n\n\n\n<p>In star topology, the server is connected to each node individually. Server is also called the central node. Any exchange of data between two nodes must take place through the server. It is the most popular topology for information and voice networks as the central node can process data received from the source node before sending it to the destination node.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"460\" height=\"390\" src=\"https:\/\/itnotes.apjsoftwares.com\/wp-content\/uploads\/2023\/05\/image-34.png\" alt=\"\" class=\"wp-image-221\" srcset=\"https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-34.png 460w, https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-34-300x254.png 300w\" sizes=\"(max-width: 460px) 100vw, 460px\" \/><\/figure>\n\n\n\n<p><strong>Advantages of Star Topology<\/strong><\/p>\n\n\n\n<p>These are the advantages of using star topology \u2212<\/p>\n\n\n\n<ul>\n<li>Failure of one node does not affect the network<\/li>\n\n\n\n<li>Troubleshooting is easy as faulty node can be detected from central node immediately<\/li>\n\n\n\n<li>Simple access protocols required as one of the communicating nodes is always the central node<\/li>\n<\/ul>\n\n\n\n<p><strong>Disadvantages of Star Topology<\/strong><\/p>\n\n\n\n<p>These are the disadvantages of using star topology \u2212<\/p>\n\n\n\n<ul>\n<li>Long cables may be required to connect each node to the server<\/li>\n\n\n\n<li>Failure of central node brings down the whole network<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Tree Topology<\/strong><\/h2>\n\n\n\n<p>Tree topology has a group of star networks connected to a linear bus backbone cable. It incorporates features of both star and bus topologies. Tree topology is also called hierarchical topology.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"526\" height=\"391\" src=\"https:\/\/itnotes.apjsoftwares.com\/wp-content\/uploads\/2023\/05\/image-33.png\" alt=\"\" class=\"wp-image-220\" srcset=\"https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-33.png 526w, https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-33-300x223.png 300w\" sizes=\"(max-width: 526px) 100vw, 526px\" \/><\/figure>\n\n\n\n<p><strong>Advantages of Tree Topology<\/strong><\/p>\n\n\n\n<p>These are some of the advantages of using tree topology \u2212<\/p>\n\n\n\n<ul>\n<li>Existing network can be easily expanded<\/li>\n\n\n\n<li>Point-to-point wiring for individual segments means easier installation and maintenance<\/li>\n\n\n\n<li>Well suited for temporary networks<\/li>\n<\/ul>\n\n\n\n<p><strong>Disadvantages of Tree Topology<\/strong><\/p>\n\n\n\n<p>These are some of the disadvantages of using tree topology \u2212<\/p>\n\n\n\n<ul>\n<li>Technical expertise required to configure and wire tree topology<\/li>\n\n\n\n<li>Failure of backbone cable brings down entire network<\/li>\n\n\n\n<li>Insecure network<\/li>\n\n\n\n<li>Maintenance difficult for large networks<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Mesh Topology<\/strong><\/h2>\n\n\n\n<p>In this type of topology, a host is connected to one or multiple hosts.This topology has hosts in point-to-point connection with every other host or may also have hosts which are in point-to-point connection to few hosts only.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"560\" height=\"365\" src=\"https:\/\/itnotes.apjsoftwares.com\/wp-content\/uploads\/2023\/05\/image-32.png\" alt=\"\" class=\"wp-image-219\" srcset=\"https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-32.png 560w, https:\/\/itnotes.apjsoftwares.in\/wp-content\/uploads\/2023\/05\/image-32-300x196.png 300w\" sizes=\"(max-width: 560px) 100vw, 560px\" \/><\/figure>\n\n\n\n<p>Hosts in Mesh topology also work as relays for other hosts which do not have direct point-to-point links. Mesh technology comes into two types:<\/p>\n\n\n\n<ul>\n<li><strong>Full Mesh<\/strong>: All hosts have a point-to-point connection to every other host in the network. Thus for every new host n(n-1)\/2 connections are required. It provides the most reliable network structure among all network topologies.<\/li>\n\n\n\n<li><strong>Partially Mesh<\/strong>: Not all hosts have point-to-point connection to every other host. Hosts connect to each other in some arbitrary fashion. This topology exists where we need to provide reliability to some hosts out of all.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>What is network topology The way in which devices are interconnected to form a network&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts\/216"}],"collection":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/comments?post=216"}],"version-history":[{"count":1,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts\/216\/revisions"}],"predecessor-version":[{"id":222,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/posts\/216\/revisions\/222"}],"wp:attachment":[{"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/media?parent=216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/categories?post=216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itnotes.apjsoftwares.in\/index.php\/wp-json\/wp\/v2\/tags?post=216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}