Networking is popular method today to share files and folders, also to communicate among computers. In the tutorial, we will discuss about what is computer network and types of network depending on topology.
Computer Network is a collection of desktop, laptop, servers, netbooks which are interconnected with each other for sharing resources. And networking is a process through which computers are connected. This connection can be established via cables, most commonly used Ethernet cables and wireless connection can be done by radio waves. By this method, one computer can access files, folders, printers, internet and do more with more than one computers. So, this is now popular all over the world used in small, medium and large enterprises.
How many types:
The computer network can be built in various structures. So, this can be categorized into assorted topology. Topology is a technique of how computers are physically or logically arranged under a network. Many physical topologies are available today listed below.
BUS: When a main cable connects to all computers and devices, this type of network environment is called bus topology. If the main cable is cut off, all the devices are disconnected from each other. So, entire network is broken. It is cheap to establish due to less utilize of cabling.
STAR: In the star topology every computer is directly connected to a central device via cable. The central device can be a server computer, hub, switch, router etc. It has central control. If one computer’s cable is cut off, it does not effect on all the networks. All other computers can communicate with each other under the network connection.
RING: When workstations are attached like a closed loop structure, the environment is known as ring topology. In the situation, the most closed pairs of computers are directly appended by cable. Data is transmitting here through more intermediate nodes. If one computer’s network is broken, then the other computers can not communicate. That means all networks are down. It looks like a rounded ring.
TOKEN RING: In this protocol, data travels to only one direction.\
MESH: Each computer is connected to every computer of others, then this is called mesh topology. If one computer’s connection is broken, it does not affect on another. So, other node can transmit data with another node. It requires many cables and devices. So, this way is more expensive to establish network.
TREE: In the tree topology, two or more star networks are attached together by a main cable. Here, the central computers or devices of star network get connection with a main bus. Now we can say shortly that a tree topology is a form of bus network by connecting more star networks.
The cable is a crucial medium to configure network environments. My types of cables are used to connect workstations. The assorted cables used to pass signals are UTP-unshielded twisted pair cable, STP-shielded twisted pair cable, fibre optic cable, coaxial cable and wireless Lan.
The coaxial cable often utilized in cable television configuration. It has many layers of insulation. It is also called copper wire.