What is Computer Network?- Definition, Types, Examples, Advantages, and Disadvantages [2022]

What is Computer Network?- Definition, Types, Examples, Advantages, and Disadvantages [2022]

Friends, first and foremost, we have learned about what is the computer? and its generations of computers. In today’s article, we shall discuss: what is computer networking? What are the different types of computer networking and what are the advantages and disadvantages of computer networks?

The modern era of computer networking has altered the entire world. With this strategy, any task may be completed in seconds. Previously, if someone needed to send a letter or message to a friend or relative, it would take several days; if he wanted to talk to someone, he could go to him and talk with him; if there was no time, he could not.

In today’s world, in the advanced age of computer networking, no matter how far a person is from another, it appears that they are close since we can talk to them, give them messages, and, most importantly, watch and listen via video conversations.

Not only that but every significant document or file, photo or video, message or email is sent via the Internet, which is a major technological success in today’s world.

Today, we’ll go over computer networking in great depth.

What is computer network?

Definition- A computer network is a system that allows two or more computers to communicate and exchange data. Mobile phones to servers are all examples of computing devices. These devices are connected through physical cables such as fiber optics, but they can also be wireless.

These interconnected PCs can share a variety of network services, including the Internet, printers, scanners, file servers, software, and much more.

That is, all of the computers connect to form a network, which is referred to as a computer network, and each machine connected to the network may perform increasingly more work.

Example: Telephone network, Mobile network, and Computer network.

Examples of Computer Network

  1. The World Wide Web
  2. The Internet
  3. Powerline and airline networks
  4. Citation networks
  5. Food webs
  6. Language networks
  7. Economic networks
  8. Metabolic and protein networks
  9. Social networks

You may also like:

Difference Between Network And Networking

A network is created when various computer gear is joined by wire or wireless so that data can be transferred between them.

The process of connecting all of this computer hardware is known as networking, and it includes connecting the devices, maintaining them, and repairing any flaws.

Needs of Computer Network

  1. Any type of data can be sent to another location where it is used in a ritual.
  2. sending data to other people connected to that network in any way
  3. Making a rapid connection in an emergency and reaching out to others on the network
  4. using e-mail to communicate with others
  5. to gain information via the internet’s resources

Basic parts of data communication of computer network

What is Computer Network?- Definition, Types, Examples, Advantages, and Disadvantages [2022]

For data communication, a computer network includes five basic parts or components:

1.Sender: The message is sent by the sender, who can use a mobile phone, computer, or workstation to do so.

2.Receiver: The information or message is received by the receiver, which could be a smartphone, computer, or workstation.

3.Message: A message delivers actual data such as a picture, music, video, text message, and so on.

4.Transmission Medium: Through the transmission channel, the message is conveyed from the sender to the receiver. It can be twisted-pair wire, coaxial cable, or radio waves, among other things.

5.Protocol: Many rules regulate data transfer in protocols. Two protocols can link without a protocol, but networking cannot.

Difference between Network and Networking

Networking is the process of establishing and configuring a network. Hardware devices and software (protocols) are necessary to establish a network!

After the network has been set up, all of the devices in the network exchange data. The device follows specific rules known as Protocols, which are established by the OSI model, to communicate information with each other on the network.

Types of Computer Network

1. Division based on the communication medium 

  • Wired Network: “Wired” refers to any physical media made up of cables, as we all know. Copper wire, twisted pair cable, and fiber optic cable are all possible choices. Wires link devices to the Internet or another network, such as a laptop or desktop PC, in a wired network.
  • Wireless Network: “Wireless” refers to media that uses electromagnetic waves (EM waves) or infrared waves to communicate. On all wireless devices, antennas or sensors will be present. Wireless gadgets include cellular phones, wireless sensors, TV remotes, satellite disc receivers, and laptops with WLAN cards. A wireless network instead of using cables for data or voice connection uses radiofrequency waves.

2. Division based on covered area

  • Local Area Network (LAN): Local Area Network (LAN): A local area network (LAN) is a network of roughly 10 kilometers in length. Take, for example, a college or office network.
  • Metropolitan Area Network (MAN): A metropolitan area network (MAN) is a network that spans an entire city. Take, for example, the cable television network.
  • Wide Area Network (WAN): A wide-area network, or WAN, is a network that links nations or continents. The Internet, for example, allows users to connect to a distributed system known as www from anywhere on the planet.

3. Based on the various modes of communication

  • Point To Point networks: Point-to-point networking is a kind of data networking in which two networking nodes are connected directly. A point-to-point connection is a direct connection between two devices, such as a computer and a printer.
  • Broadcast networks: A signal mechanism that allows numerous parties to listen to a sender in broadcast networks. In everyday life, radio stations are an example of a “broadcast network.” In this instance, the data/signal is sent by the radio station, and it is only intended to travel one way. To be exact, away from the radio tower.

4. Based on the type of architecture 

  • P2P Networks: Peers are computers that have comparable capabilities and setups. The term “Peer to Peer” is abbreviated as “Peer to Peer.” Peer-to-peer networks are made up of “peer” computer systems connected over the Internet. Without the use of a central server, files can be exchanged directly between systems via a network.
  • Hybrid Networks: A network that combines client-server and peer-to-peer architecture is referred to as a hybrid model. Torrent, for example.
  • Client-Server Networks: In a client-server architecture (client/server), each machine or process on the network is either a client or a server. The client requests services from the server, and the server fulfills the request. High-performance computers or programs that manage disk drives (file servers), printers (print servers), or network traffic are referred to as servers (network servers).

What Is Network Topology?

In the terminology of computer networks, this is referred to as network topology. Network topology is also known as network form because it determines how the network will be designed and how data will be exchanged among linked nodes. Physical topology and Logical topology are the two types of topology.

Physical Topology

The hardware structure of the network, such as how the hardware in the network is connected to each other, is referred to as physical topology. That is, it encompasses everything that goes into setting up a network, such as how computers and switches are wired together.

Logical Topology

Logical topology relates to the network’s data transmission; in other words, how the hardware is interconnected in physical topology is observed, and how the data will flow between that hardware is seen in logical topology.

History of Computer Network

The network was first founded in 1960 and was dubbed ARPANET (Advanced Research Project Agency Network) at the time. The Department of Defense founded it. It was a test network that was created primarily to test network technology.

The first computer network was developed by linking four host computers from America’s four major institutions, which allowed users to share information. The ARPANET network connected 32 major processors in 1972.

ARPANET was first connected to England and Norway in 1973. It is utilized to exchange data by tying together tiny networks. Later in 1972, the NCSA network was created, followed by the NSFNET network. It grew into a very large network as it progressed in this manner.

The transmission speed of Ethernet was boosted from 10 Mbps to 100 Mbps in 1995, and then to 1 Gbps in 1998, as the Internet grew in popularity. Ethernet is now referred to as a LAN.

Advantages of Computer Networks

Although there are several advantages to computer networks, which we all utilize today, we will focus on a few key advantages:

  • Computer networks are extremely useful for transferring and receiving data, files, and other resources.
  • This allows apps to be shared and collaborate.
  • It can be used by anybody by connecting their computer devices, and it can also be shared by a group of people.
  • We can communicate in this by joining a group, and we can also make video calls in this group.
  • Computers can share software among users or use resources such as printers, scanners, CPUs, CD ROM drives, and other hardware devices at the same time.

Disadvantages of Computer Networks

Some of the most significant downsides of computer networks are as follows:

  • Network setup costs: Setting up a network necessitates the purchase of expensive gear such as routers, hubs, switches, and cabling. The cost is also dependent on the number of systems that will be added to the network.
  • Virus or malware infection: Viruses or malware may readily propagate over a network of computers. If one of the computers becomes infected, the virus is very likely to propagate to the other PCs. This may be avoided by conducting malware scans on a regular basis.
  • Issues with free access: The network is not independent since everything is centralized. Individual users are unable to utilize the computer as they like as a result.
  • Expert Assistance is Required: To maintain network performance and functioning, networks must be regularly monitored. As a result, if you want to keep your computer network running smoothly, you’ll need a team of professionals.


I hope you have gained an understanding of what a computer network is, the different types of computer networks, and other related facts from this page. If you have any suggestions for this post, please leave them in the comments section and we will do our best to accommodate them. We hope you like this content and will share it with your friends; thank you.


Leave a Reply

Related Posts