Understanding Network Protocols and How They Work

Network Protocols

A network protocols is a computer in a network that is managed by a system that can manage the process of exchanging data between devices.

We often find this network protocol in networks with more than one computer.

A deeper understanding of network protocols and how they work can be seen below.

Understanding of the Internet

Before discussing network protocols, we should first understand the meaning of the internet.

Almost every day, especially those of us who live in urban areas, have used the internet, even though the internet has become a necessity that is used every day by all groups.

Therefore, the understanding of the internet in general is not foreign to us. In big cities, we often see that the internet is very much needed to carry out an activity, whether it is work, school, or for health.

In addition, companies also need the internet to develop their business to be even bigger.

So that the office operational system can be faster and more efficient because the internet can provide the right solution in overcoming problems.

Surely you are also familiar with online shopping, where many people have used this facility when they wanted to buy goods, furniture, and even food without leaving the house.

What are the Definitions of the Internet According to Experts?

What are the meanings of the internet according to experts, let’s look at the following things.

Allan (2005)

Understanding the internet is a collection of computer networks that are connected to each other and can read and describe various protocols or communication rules in the form of IP or internet protocol and TCP or Transmission Control Protocol. Protocol also according to Allan is a simple specification of how computers can interact with each other.

Turban, Rainer, Potter (2005)

The internet is a large network that can connect computer networks ranging from government organizations, businesses, schools around the world directly and quickly.

Supriyanto (2006)

The internet has the meaning of a relationship consisting of various computers and networks in the world and has an operating system with different applications.

This relationship takes advantage of advances in communication equipment, for example via satellite, telephone, which uses a standard protocol, namely TCP/IP.

Harjono (2009)

Internet means a collection of several computers, even up to millions of computers that are connected and connected to each other.

In order for computers to interact and connect with each other, a device or media is needed to connect them. This media is cable or fiber optic or can also use satellite or telephone connection.

Sibero ( 2011)

Sibero assumes that the internet is an inter-connected network, which means a computer network that is interconnected between computers globally. The internet works the same as computers that are connected to each other globally and locally with a wide area and the internet uses the same communication protocol, namely TCP / IP.

Sarwono (2012)

The Internet is a collection of global scale networks. Sarwono thinks that no one can be responsible for the use of the internet. Initially the internet was only used for military purposes, but now the internet is a necessity as well as entertainment for the community.

What is the Function and Purpose of the Internet?

The functions and purposes of the internet include:

Easy to access information

Nowadays we can get information easily just by using the internet. Before the internet, we needed to buy books just to find the information we wanted to know, but nowadays we can learn many things by using the internet anywhere and anytime.

Easily communicating

If we want to communicate with friends or friends who are far away, we must first meet to communicate and it takes a lot of money and a long time. Since the existence of the internet we can communicate at any time without the need to worry about meeting first.

Ease in Work

Companies currently use the internet a lot as a solution in solving various problems efficiently and quickly. For example, by having a system that is interconnected with each other.

What are the Benefits of the Internet?

Some of the benefits of the internet in everyday life include:

Benefits of the Internet for Business

Online shopping is one of the easiest examples for most Indonesians to understand about the benefits of the internet for business.

Yes, it’s true that business by selling online is a business that is quite promising at this time which is getting more and more interested.

Benefits of the Internet for Learning

The internet can also be used as an online learning method that makes it easier for students or students to carry out the self-taught learning process.

This online learning media ranging from mathematics to English and other subjects can be easily learned with the internet.

Benefits of the Internet for Entertainment

The advantage of finding information quickly can be found on the internet and also as a means of entertainment such as Facebook, Instagram, Youtube, and many more.

How does the impact of the Internet in everyday life?

Did you know that there are two impacts caused by the internet, namely the positive impact and the negative impact. Let’s look at some of the following:

Positive impact

The positive impacts of using the internet include:

Easy to get information

One of the most enjoyable things about the internet is that it can spread a lot of information just by using a computer or cell phone. Unlike the old days, you had to go to the library to get the information you needed.

Assist in solving problems and tasks

What can be felt for students is the amount of information provided by learning applications with the internet that is accessed quickly, easily, and is easy to process.

Get entertainment

We certainly know that there are many entertainment facilities that we can use on the internet, such as watching Youtube videos, listening to songs, and so on.

Ease of doing business

The development of the internet can also be influenced by current business developments, for example with the existence of social media, websites, video channels, and so on that can be used as business land and sales promotions via the internet.

Simplify the Communication Process

The communication process today is very easy with the internet. Yes, now if we want to have a reunion, it’s very easy to just use video conferencing.

Negative impact

The negative impact of internet use in daily internet use.

The occurrence of cyber bullying

The internet can also be a means for cyber bullying that occurs on the internet which has a lot of privacy that is increasingly difficult to hide.

Negative behavior and bad content

This internet can require us to be wise in using it so it is highly recommended to use the internet for activities that are not useful.

The rise of hoax issues and the spread of hoaxes

The issue of hoax or untrue news can happen to anyone and any party who spreads, is reported to, so that hoax readers will definitely be harmed. So be careful in choosing and finding out if the news is true or not.

The existence of Cyber ​​Crime, namely internet crimes such as fraud

Cyber ​​crime or cyber crime can happen to anyone, especially those related to online shopping which can also be fraudulent. So be careful in buying goods online by choosing a trusted store or seller.

The original culture is starting to be abandoned

Indeed, internet technology is growing rapidly, but that does not mean that good habits, including social activities, are abandoned in society.

Explanation of Network Protocol

Network protocols are closely related to sending and receiving data. However, actually if you define it completely, maybe you will be able to understand more clearly what is meant by a network protocol.

Starting from the definition of a protocol only, in networking, a protocol is a set of rules for formatting and processing data. Network protocols are like a common language for computers. Computers on a network can use very different software and hardware; however, the use of protocols allows them to communicate with each other.

Understanding Network Protocol

A network protocol is a set of defined rules that define how data is transmitted between different devices in the same network. Basically, it allows connected devices to communicate with each other, regardless of any differences in their internal processes, structures or designs.

Network protocols are the reason you can easily communicate with people all over the world, and thus play an important role in modern digital communications.

Similar to the way that speaking the same language simplifies communication between two people, network protocols allow devices to interact with each other due to predefined rules that are built into the software and hardware of the device. Neither Local Area Networks (LAN) and Wide Area Networks (WAN) could not function as they do today without using network protocols.

Network Protocol Functions

Network protocols take large-scale processes and break them down into specific small tasks or functions. This happens at every level of the network, and every function must work together at every level to complete the larger task. The term protocol suite refers to a set of smaller network protocols that work in conjunction with one another.

Network protocols have various functions including:


Or what is called data encapsulation is a process in which some additional information is added to a data item to add some features to it. Most use the OSI or TCP/IP model in their network, and data transmission occurs through various layers in this model. encapsulation adds protocol information to the data so that data transmission can take place in the correct way.

Connection Control

Network protocols also have functions to control connections. Connection control allows you to limit the devices that can connect to the SMTP Server. This can be useful if you use the service as a relay for locally installed applications by limiting connections to local hosts.

Flow Control

In the network there is flow control. This serves to tell the sender how much data should be sent to the recipient so as not to be lost. This mechanism makes the sender wait for acknowledgment before sending the next data. There are two ways to control the flow of data:

  1. Stop and Wait Protocol
  2. Sliding Window Protocol

Error Control

This function at the data link layer is the process of detecting and retransmitting lost or damaged data during data transmission. Every reliable system must have a mechanism to detect and correct these errors.


IP fragmentation is an Internet Protocol (IP) process that breaks packets into smaller pieces (fragments), so that the resulting pieces can pass through a link with a maximum transmission unit (MTU) that is smaller than the original packet size. The fragment is reassembled by the receiving host.


This is the opposite of fragmentation. Its function is to reassemble the package into its original form.

Transmission Service

This function allows communication between a number of computers (called hosts) connected to the network. Each network can be connected to another network to communicate with hosts on that network.

Protocol Type

The following are different types of protocols that you need to know the difference between one another.


Ethernet is a technology used to connect devices in a wired wide area network or local area network. It is used to allow communication between devices through a set of rules called protocols or common network languages.


The LocalTalk system consists of a built-in controller, with cables and expansion cards sometimes required. This enables daisy-chaining, which connects sequences of devices to each other using LocalTalk cables.

Token Ring

Token ring is a network that is able to prevent data packets from colliding on a network segment because only token holders can send data, and the number of tokens available is also controlled. When a device on the network successfully decodes the token, it receives the encoded data.

FDDI (Fiber Distributed Data Interface)

This type of protocol is a set of ANSI and ISO standards for transmitting data on Local Area Networks (LANs) over fiber optic cables. This is true in large LANs that can extend up to 200 kilometers in diameter.

TCP/IP (Transmission Control Protocol/Internet Protocol)

TCP is one of the most widely used protocols using the internet. TCP is a two-way conversation focused on stability.

Packages will be instructed and numbered and then checked for errors.

UDP (User Datagram Protocol)

Still with TCP, UDP won’t do all the error checking that TCP does

An error will appear when checking slower points. Packages are only sent to the recipient.

ICMP (Internet Control Message Protocol)

Internet Control Message Protocol (ICMP) is a network layer protocol used by network devices to diagnose network communication problems. ICMP is mainly used to determine whether the data reaches the desired destination in a timely manner.

HTTP (Hypertext Transfer Protocol)

Which is very commonly used is http which you must use often. As a request-response protocol, HTTP provides users with a way to interact with web resources such as HTML files by sending hypertext messages between the client and server.

HTTPS (Hypertext Transfer Protocol Secure)

Still the same as http, https ensures that all communication between the user’s web browser and the website is fully encrypted.

FTP (File Transfer Protocol)

FTP allows us to transfer files from client to server or from server to client. FTP will use both ports 20 and 21; one is used for authentication; others are used to transfer information.


How? Are you familiar with network protocols? Maybe you have used it unknowingly or knowingly but you did not understand before that it is a type of network protocol.

If you still have questions about network protocols, you can visit NetData for other interesting information about network protocols which will be discussed in more detail and in depth.


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