Sumit Kumar

@sumitkmr673

Being the weirdo I am.

Kolkata, WB, IndiaJoined December 2025

About

I am a passionate Computer Science & Engineering student from Techno Main Salt Lake (Kolkata), CSE'27 batch. I write what I learn in my blog series. Feel free to look around, and provide your valuable feedback.

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Sumit Kumar's blogs

Sumit's Insightssumitkmr673.hashnode.dev5 posts

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Recently published

SKSumit Kumarsumitkmr673.hashnode.devJan 27 · 16 min read

How DNS Resolution Works

We have previously discussed about how Internet reaches our home, what’s the basic infrastructure which makes the internet work. So we have connected the cables, configured the devices and software necessary to access the internet in our home network...

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SKSumit Kumarsumitkmr673.hashnode.devJan 23 · 10 min read

Understanding Network Devices

We all have been using Internet for a while now; ever thought how it gets to your house? In this article, I’ll be talking about bird’s eye view of the infrastructure which the internet depends on, the network devices involved and their roles in this ...

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SKSumit Kumarsumitkmr673.hashnode.devJan 17 · 6 min read

Why Version Control System Exists: The Pendrive Problem

Introduction Before version control systems existed, software was still being built, shared, and maintained by teams of developers. However, the way code was managed back then was far from structured. Developers relied on tools like pendrives, emails...

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SKSumit Kumarsumitkmr673.hashnode.devJan 17 · 12 min read

Inside Git

Introduction In the previous article, we learned what Git is, why it is used, and how to work with it using basic commands. While that is enough to start using Git effectively, it does not explain what Git is actually doing behind the scenes. In this...

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SKSumit Kumarsumitkmr673.hashnode.devJan 17 · 12 min read

Git: Basics and Essential Commands

Introduction Coming from a computer science background, you must have at least heard about GitHub. Ever thought what it actually is? Why is it so popular and is extensively used? How can YOU learn and work on GitHub? If your answer is YES then you ar...

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Sumit Kumar

About

Available for

Sumit Kumar's blogs

Recently published

How DNS Resolution Works

Understanding Network Devices

Why Version Control System Exists: The Pendrive Problem

Inside Git

Git: Basics and Essential Commands

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Sumit Kumar

About

Available for

Sumit Kumar's blogs

Recently published

How DNS Resolution Works

Understanding Network Devices

Why Version Control System Exists: The Pendrive Problem

Inside Git

Git: Basics and Essential Commands