What is a network and what are the nodes present in a network?

A network is an interconnection between various communication elements connected past various communication links for information interchange. When two or more elements are connected in a limited geographical surface area to share their resources and information, they are said to exist in a network. We can see examples of a network in almost every field effectually u.s..

Merely in this blog, we'll mainly focus on calculator networks. We'll besides study the nodes present in a network, classifications, goals, and applications of a network.

Computer Network

A computer network is a system in which multiple computers are connected to each other to share information and resources. In other words, it is a network of various communicating devices or elements continued by communication links. The communication elements tin can be a estimator, mobile, router, switch, etc., and communication links tin can be an optical fibre cable, coaxial fibre cablevision, wireless LAN, etc.

In a computer network, one process in 1 device is able to send/receive data to/from at least one process residing in a remote device. The internet is a network of networks. It is not managed by a single arrangement.

Node

In a reckoner network, a node is either a connection point, a redistribution signal, or a advice betoken. In other words, a node refers to a point or articulation where a connection takes identify.

It can be a computer or device that is part of a network. By and large, two or more than nodes are needed in order to class a network connection. The definition of a node depends on the network and protocol layer referred to.

A node may be a data communication equipment (that can be used to institute communication, such every bit modem, hub, bridge, switch, etc.) or a data terminal equipment (that tin be an end device, such as digital telephone, handset, printer, host computer, etc.).

A concrete network node is an active electronic device that is attached to a network. It is capable of sending, receiving, or forwarding information over a communication channel.

Each device on a network that has a unique logical or IP (Cyberspace Protocol) address can besides exist termed as a node. When connected in a network, every node in a network must have a MAC address. MAC address is a unique identifier assigned by device manufacturers to a network interface controller (NIC) for communications in a network. NIC is a computer hardware component that connects a computer to a computer network. When connected to the internet or intranet, the nodes are referred to as internet nodes. These nodes are identified by their IP addresses.

Some Information Link layer devices(switches, bridges, WLAN admission points, etc.) do not have an IP address. Thus, they are physical merely non internet nodes.

In a distributed network, nodes can be clients, servers, or peers. It may too use some virtual nodes, and so as to maintain transparency. In deject calculating, each user computer that is connected to a cloud tin be treated equally an end node.

The degree of connectivity of a node is the measure of the number of connections a node has with other nodes.

Classification of Computer Network

A estimator network can be classified on the basis of advice media, functional relationships, topology, and scale of the network.

Now have a wait at all these classifications one by i.

  • Classification based on communication media:

Computer Networks can be broadly classified in the following two categories based on communication media:

  1. Wired Network: Information technology can be implemented using coaxial cable, optical fibre cablevision, etc.
  2. Wireless Network: It can be implemented using Terrestrial Microwave, Communication Satellites, Wireless LANs.
  • Nomenclature co-ordinate to calibration:

Computer Networks can be broadly classified in the following 3 categories according to calibration or the surface area of a network:

  1. LAN: It is the acronym for Local Area Network. It is confined to a small geographical area such as a library, higher building, etc.
  2. MAN: It is the acronym for Metropolitan Expanse Network. It is bars to a large geographical area such as a urban center or town.
  3. WAN: It is the acronym for Wide Expanse Network. It is confined to a very large geographical area such as a state or even the whole globe.
  • Classification based on Network topology:

Reckoner Networks tin be broadly classified in the following five categories based on network topology i.eastward based on how the nodes are connected in a network:

  1. Bus: In this network topology, every node is connected to a single cablevision, also chosen a charabanc.
  2. Star: In this network topology, all the devices are continued to a single hub through a cable. This hub is the central node. The hub can exist active or passive in nature.
  3. Ring: In this network topology, a ring is formed betwixt various nodes that connect a device with its exactly ii neighbor devices.
  4. Mesh: In this network topology, every node is continued to another node via a particular channel.
  5. Hybrid: This network topology is a combination of ii or more topologies.
  • Nomenclature based on Functional Human relationship:

Computer Networks can be broadly classified in the following three categories based on functional relationship:

  1. Active Networking: It allows the packets flowing through a telecommunications network to dynamically alter the operations of a network.
  2. Client-Server Networking: It is a network in which a client runs the program and access data that are stored on the server.
  3. Peer-to-Peer Networking: This network facilitates the flow of information from i peer to some other without any central server.

Goals of a Computer Network

The principal goal of a computer network is mainly related to interconnection and information interchange. Some major goals of a computer network are every bit follows :

  • Resource Sharing: All the devices nowadays in a figurer network can share their resources with each other.
  • Reliability: A computer network makes the organization reliable. If ane node fails, the working of all nodes volition not be affected.
  • Money Efficiency: In a computer network, nodes can share hardware and software components with each other, thus making it money efficient.
  • Scalability: A computer network makes the arrangement scalable. We can add together or remove the nodes from the network with our convenience.

Applications of Reckoner Network

A reckoner network can be applied to various fields some of the application areas are every bit follows:

  • Business organisation Applications: In business a computer network can be used for B2B, and B2C communication.
  • Home Applications: Habitation applications of a computer network can be accessed for remote information, person-to-person communication, electronic commerce, etc.
  • Mobile Applications: Mobile applications of computer networks can be mobile banking, communication, etc.
  • Social Applications: Social applications of reckoner networks can be various social networking applications like facebook, twitter, etc.

This is all nearly computer networks and its node. Hope y'all learned something new today.

That's it for this blog.

Do share this weblog with your friends to spread the noesis. Visit our YouTube channel for more content. You tin read more blogs from hither.

Keep Learning :)

Team AfterAcademy!