How does the data communication network work?

The data communication network belongs to computer science, and it transmits the exchange of information between computer systems and analog calculating devices.

It is also known as a computer network, and this data switching is done through unicast, multicast, broadcast, and anycast. Each one is responsible for sending information either to a specific network or to several simultaneous ones.

This data transmission results in the internet, and this exchange of information can be the transmission of voice and videos. Everything is done through software and hardware that create this communication network; what we see is only the intuitive part of user access, but behind it lie all these processes.

Summary

What is the function of the data communication network?
What is unicast?
What is multicast?
What is broadcast?
What is Anycast?
What are the differences between these networks?
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What is the function of the data communication network?

Computer networks perform data routing, which is linked to the IP address. Through this reading, the machine identifies what the next transmission will be; this is called hop by hop, which repeats until it reaches the final recipient.

All data is encrypted and is part of a layer of the Open Systems Interconnection (OSI) model, which was created by the International Organization for Standardization; this transmission is carried out through standardized protocols.

Within networks there are also subnetworks, and the ones responsible for this completion are the data communication software. It is at this moment that the unicast, multicast, broadcast, or anycast networks can come into play.

What is unicast?

Unicast is a point-to-point network connection made by the sender and all the recipients. In other words, they can transfer the same data to several computers at the same time, simultaneously.

This happens when several recipients want a copy of that data at the same time; the larger this number, the heavier the transmission will be for the sender, and this causes the data to take longer to arrive.

So that the sender's network can support the number of transmissions, it is advisable to extend the amount of broadband and hardware capacity.

Example: When we write an email and send it separately to several recipients, but it is the same information. Except that no recipient knows who received that data, only the one who sent it. It is similar to this.

What is multicast?

In multicast, the information is sent to a group of recipients with multiple IP addresses. They are most used for subnetworks to obtain a network address (DHCP). Only one copy of the data is sent to all these recipients at once.

A practical example: you create a group of recipients and put in all the information you want, then you just send it. They will all receive that single email at the same time. The recipients can be hidden so they do not know who else received the data, but the transmission is just one.

This improves the agility of the transmission and it does not become heavy, because despite being several IP addresses, it is just one transmission, so the communication network is used only once, which reduces slowness.

What is broadcast?

Broadcast is the sending of data to as many recipients as possible with several different network addresses. But in this case, the transmissions go to IP subnetworks, so all the hosts of these computers receive this data without needing authorization.

If in the others the recipients need to accept this receipt of data, in broadcast the acceptance is automatic. That is why the transmission is quite fast and the device network is the Switch.

Example: when you have already exchanged emails with a contact before or have already shared a file with them. The moment you send again, it already recognizes that address and sends automatically.

What is Anycast?

It is the increase in speed during transmissions; in addition, it also gives more reliability to the shared data, as if it were extra security in the transmissions.

However, it chooses the closest recipients for this sharing; with the short distance, it is easier to reduce the data delivery time.

What are the differences between these networks?

Unicast: data transmission made to only one recipient at a time;
Multicast: data transmission made to several recipients at once;
Broadcast: data transmission made to all recipients on the network;
Anycast: data transmission made to the closest recipient on the network, without needing authorization.

Basically each one has its function; when it comes to the amount of data reception, the transmissions are made according to this communication network. Which allows a limited or open amount of data sharing.

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