A computer network is a system that connects many independent computers to exchange information (information) and resources. Connect computers and other various devices to facilitate communication.
A computer network is a combination of two or more interconnected computer systems. We establish communication links using wired or wireless media. Hardware and software connect computers and devices on each network.
Computer networks consist of many types of nodes. Nodes in a computer network might include servers, network devices, personal computers, and other specialized equipment. The hostname and Internet address identify it.
How Does a Computer Network Work?
Computer networks use only nodes and links. Simply called nodes are data mobile devices. For example, when computers are connected to networks, modems, hubs, switches. can be verified for communication between two nodes. We have many types of connections including cable and fiber optics.
When a computer network is active, nodes send and receive data via the links. Computer networks provide special measures to ensure compliance with laws and regulations.
What Do Computer Networks Do?
Computer networks are an important part of computer science. In ancient times, it was used to send information through mobile phones and its use was very limited, but now it is used in many countries. Computer networks provide the best communication tools available today. Modern computer networks also have the following features.
- It helps computer networks work properly.
- Highly interconnected computer networks.
- Computer networks respond quickly to changing conditions.
- Computer networks help protect data.
Key Components of a Computer Network
From a broader perspective, a computer network consists of two basic components: nodes or network devices and links. A link connects two or more nodes. The network interface determines how data is transferred from this network. We often refer to ports as connection points, such as origin and destination.
Basic Terminologies of Computer Networks
Network: A network is a collection of computers and devices connected for communication and exchange.
Nodes: Nodes are devices connected to a network. This includes computers, servers, printers, routers, switches, and other equipment.
Protocols: Protocols define the rules and standards for transmitting data across a network. Examples of protocols are TCP/IP, HTTP and FTP.
Topology: Network topology refers to the physical structure and arrangement of nodes in a network. Network connections include buses, stars, rings, eyes and trees.
Service connections: These types of connections allow service providers to leverage the capacity and performance of the tenant’s network. Communication services such as wireless communication and data communication.
IP Address: An IP address, a unique number assigned to each device on a network, serves to identify devices and facilitate communication between them.
DNS: The Domain Name System (DNS) translates domain names (like www.google.com) into IP addresses that computers can understand.
Firewall: A firewall functions as a security device that monitors and controls access to a network. Firewalls protect communications from unauthorized access and other security threats.
What Types of Computer Networks Are There?
Different computer networks define their goals and the geographic areas they want to target.
Here are the most common types of computer networks, from smallest to largest:
Personal area network (PAN)
In a network (wireless or not), human devices are nodes that connect to other devices on the network.
Local area network (LAN)
A network refers to a small area such as a home, office or school
Campus area network (CAN)
A network usually refers to buildings that are close to each other in government offices, universities, businesses or organizations.
Enterprise private networks (EPN)
A network connects different company sites in different locations to share resources.
Metropolitan area network (MAN)
In a metropolitan area, such as a city, organizations often connect multiple LANs to a wide area network (WAN).
Wide area network (WAN)
The network covers a large geographical area, often more than a kilometer in radius
Global area network (GAN)
A network that connects global networks (such as the Internet)
What is Network Topology?
We call the arrangement of circuits and connections network topology. Arranging them differently can yield different results. Some types of network topologies include:
Bus topology
Each node is connected to another node. Data transfer is limited over network connections.
Ring topology
Each node is connected to two other nodes. The data can go both ways. But the network as a whole can collapse due to the failure of a single node.
Star topology
Multiple devices in the customer’s network are connected to a central server node. This topology is more efficient because data does not have to go through each node. More sure.
Mesh topology
In a complete network topology, every node connects to every other node in the network.
About
We refer to computer networks as interconnected computing equipment that share resources and exchange data. These networked devices exchange data over physical or wireless technologies using a set of guidelines known as communications protocols.
Blog By:- ExpertSadar
