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Cyber Security Tutorial: A Step-by-Step Guide


What is Cybersecurity?

Lesson - 1

Cyber Security for Beginners

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How to Become a Cybersecurity Engineer?

Lesson - 3

What is Ethical Hacking?

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What is Penetration Testing?: A Step-by-Step Guide

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What Is SQL Injection: How to Prevent SQL Injection

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How to Become an Ethical Hacker?

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What Is a Firewall and Why Is It Vital?

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The Complete Know-How on the

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A Definitive Guide to Learn the SHA 256 Algorithm

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What Is a Ransomware Attack and How Can You Prevent It?

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A Look at the Top 5 Programming Languages for Hacking

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The Most Informative Guide on What Is an IP Address?

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The Best Ethical Hacking + Cybersecurity Books

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10 Types of Cyber Attacks You Should Be Aware in 2022

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The Top Computer Hacks of All Time

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Top 6 Cyber Security Jobs in 2022

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The Best Guide to The Top Cybersecurity Interview Questions

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What Is a Brute Force Attack and How to Protect Our Data Against It?

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The Top 8 Cybersecurity Skills You Must Have

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Your Guide to Choose the Best Operating System Between Parrot OS vs. Kali Linux

Lesson - 21

All You Need to Know About Parrot Security OS

Lesson - 22

The Best and Easiest Way to Understand What Is a VPN

Lesson - 23

What Is NMap? A Comprehensive Tutorial for Network Mapping

Lesson - 24

What Is Google Dorking? Your Way to Becoming the Best Google Hacker

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Your Best Guide to a Successful Cyber Security Career Path

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The Value of Python in Ethical Hacking and a Password Cracking Tutorial

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The Best Guide to Understand What Is TCP/IP Model?

Lesson - 28

What Are Keyloggers and Its Effect on Our Devices?

Lesson - 29

Best Guide to Understand the Importance of What Is Subnetting

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Your Guide to What Is 5G and How It Works

Lesson - 31

How to Crack Passwords and Strengthen Your Credentials Against Brute-Force

Lesson - 32

A Look at ‘What Is Metasploitable’, a Hacker’s Playground Based on Ubuntu Virtual Machines

Lesson - 33

One-Stop Guide to Understanding What Is Distance Vector Routing?

Lesson - 34

Best Walkthrough for Understanding the Networking Commands

Lesson - 35

Best Guide to Understanding the Operation of Stop-and-Wait Protocol

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The Best Guide to Understanding the Working and Importance of Go-Back-N ARQ Protocol

Lesson - 37

What Are Digital Signatures: A Thorough Guide Into Cryptographic Authentication

Lesson - 38

The Best Spotify Data Analysis Project You Need to Know

Lesson - 39

A One-Stop Solution Guide to Understand Data Structure and Algorithm Complexity

Lesson - 40

Your One-Stop Guide ‘On How Does the Internet Work?’

Lesson - 41

An Introduction to Circuit Switching and Packet Switching

Lesson - 42

One-Stop Guide to Understanding What Is Network Topology?

Lesson - 43

A Deep Dive Into Cross-Site Scripting and Its Significance

Lesson - 44

The Best Walkthrough on What Is DHCP and Its Working

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A Complete Look at What a Proxy Is, Along With the Working of the Proxy Server

Lesson - 46

A Detailed Guide to Understanding What Identity and Access Management Is

Lesson - 47

The Best Guide to Understanding the Working and Effects of Sliding Window Protocol

Lesson - 48

The Best Guide That You’ll Ever Need to Understand Typescript and Express

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Express REST API

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All You Need to Know About Express JS Middleware

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An Absolute Guide to Know Everything on Expressions in C

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A Definitive Guide on How to Create a Strong Password

Lesson - 53

Ubuntu vs. Debian: A Look at Beginner Friendly Linux Distribution

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Your One-Stop Guide to Learn Command Prompt Hacks

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Best Walkthrough to Understand the Difference Between IPv4 and IPv6

Lesson - 56

What Is Kali NetHunter? A Deep Dive Into the Hackbox for Android

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A Perfect Guide That Explains the Differences Between a Hub and a Switch

Lesson - 58

The Best Guide to Help You Understand What Is Network Security

Lesson - 59

What Is CIDR? And Its Importance in the Networking Domain

Lesson - 60
The Best Guide to Understanding the Working and Importance of Go-Back-N ARQ Protocol

The network protocol controls the data and information exchange between the network devices by applying going back and retransmitting the data or acknowledgment in case the network faces a network interruption or signal loss from either the sender or receiver end. In this article on ‘Go-Back-N ARQ Protocol,’ we will look into the protocol and its importance to the network.

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What Is Go-Back-N ARQ Protocol?


  • This protocol is based on the method of using the Sliding Window Protocol as the basis of data exchange, where the ’N’ in the protocol represents the window size.
  • The term ARQ represents the Automatic Repeat Request, which refers to sending multiple frames simultaneously from the sender to the receiver end.

After introducing the protocol, let’s move on to know some important features of the protocol.

Important Features of the Protocol

To better understand the Go-Back-N Arq protocol, let’s look into some of the points that affect the protocol in a network channel, which are:


  • The frames shared in the protocol are sequenced for better efficiency, to avoid any retransmission of shared data, and differentiate between the frames.


  • The protocol is designed to share multiple frames at a time, with the receiver end, before expecting any acknowledgment from it. This simultaneous exchange of data is termed protocol pipelining.


  • If the acknowledgment is not shared to the sender side within a certain time frame, all the frames after the non-acknowledged frame are to be retransmitted to the receiver side.

Moving on, let’s look into the working of the Go-Back-N ARQ protocol.

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Working on the Protocol

The working of the Go-Back-N ARQ protocol involves applying the sliding window method for the basis of sharing data, and the number of frames to be shared is decided by the window size.

Then using the main points we discussed and the mentioned features, let’s discuss the steps involved in the working of the protocol:


1. To begin with, the sender side will share the data frames simultaneously according to the window size assigned, over to the receiver side, and wait for the acknowledgment.

2. After the receiver side receives the frames, it will use the first frame and send the acknowledgment to the sender side.


3. After the sender receive’s the acknowledgment for the first frame, the sender will share the next frame with the receiver.


4. This exchange continues until, due to some external or internal interruption in the network, the acknowledgment is not received by the sender side.


5. Then, the sender side will go back to the unacknowledged frame and retransmit that frame, along with all the frames shared after that frame with the receiver. This represents the Go-Back-N ARQ protocol method.

Let’s move on to some advantages and disadvantages of applying the Go-Back-N ARQ protocol in the network.

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Advantages and Disadvantages

Applying the Go-Back-N arq protocol has both advantages and disadvantages, some of which are:



  • Multiple frames can be simultaneous to the receiver side.
  • Increase the efficiency of the data transfer and has more control over the flow of frames.
  • Time delay is less for sharing data frames.



  • The storage of data frames at the receiver side.
  • Retransmission of frames, when the acknowledgement is not received by the sender end.

With the end of this topic, we are completed with our article on ‘Go-Back-N ARQ Protocol.’

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In this article on ‘Go-Back-N ARQ Protocol’, we learned about the importance of applying the network's data exchange protocol and its working procedure for further clarification of the protocol.

If you want to learn more about the topic and topics related to network protocols, you can refer to Simplilearn’s Cyber Security Expert course. After completing this thoroughly designed course, you’ll become familiar with the terms used in the network protocols and their working in a communication channel.

Do you have any questions about this article on ‘Go-Back-N ARQ Protocol’. If yes, feel free to mention them in the comment section at the bottom of this page. Our expert team will help you solve your queries ASAP.

About the Author

Anmol KapoorAnmol Kapoor

Anmol is a Research Analyst who aims to become a Data Scientist one day. He enjoys Data Management systems and analysis. You will find him reading a book when he is not working.

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