CS Fundamentals

A curated collection of Computer Science fundamentals for placement preparation, covering all major CS subjects. Includes PDFs, notes, cheatsheets, and interview question banks.

📁 Folder Structure

CS-Fundamentals/
├── 📁 Computer-Network/          (3 files)
├── 📁 DBMS-and-SQL/              (9 files)
├── 📁 DSA/                       (6 files)
├── 📁 OOPs/                      (5 files)
├── 📁 Operating-System/          (5 files)
├── 📁 Software-Engineering/      (2 files)
├── 📁 System-Design/             (3 files)
├── 📄 HR-Interview-Questions.pdf
├── 📄 LeetCode-Problems.pdf
├── 📄 Cover-Letter-Template.docx
├── 📄 List-of-Companies-Hiring-Freshers-Offcampus.md
└── 📄 25-Job-Interview-Preparation-Prompts.md

📚 Topics Covered

Computer Network

File	Description
Computer-Network-Notes-for-Placements-and-GATE.pdf	Comprehensive CN notes for placements & GATE
Networking-Interview-Questions.pdf	CN interview Q&A
CN-Roadmap.md	Topic-wise roadmap & important concepts

DBMS & SQL

File	Description
DBMS-Handwritten-Notes.pdf	Handwritten DBMS notes
DBMS-Notes.pdf	DBMS theory notes
100-DBMS-Interview-Questions.pdf	Top 100 DBMS interview questions
Complete-SQL-Cheatsheet.pdf	Complete SQL cheatsheet
SQL-Tutorial.pdf	SQL tutorial
SQL-Interview-Questions-and-Answers.pdf	SQL interview Q&A
SQL-Interview-QA-2.pdf	Additional SQL interview Q&A
Top-50-SQL-Interview-Questions.pdf	Top 50 SQL questions
LeetCode-SQL.pdf	LeetCode SQL problems

DSA

File	Description
DSA-Cheatsheet.pdf	Data Structures & Algorithms cheatsheet
DSA-Resource.pdf	Comprehensive DSA resource
Complete-Resources-of-DSA.pdf	Complete DSA resource guide
Striver-SDE-Sheet-Solution.pdf	Striver SDE sheet solutions
Top-50-DSA-Interview-Questions.docx	Top 50 DSA interview questions
Learn-DSA-for-Free.docx	Free DSA learning resources

OOPs

File	Description
OOPs-Interview-Questions.pdf	OOP interview Q&A
OOPS-Concepts-in-Java.pdf	OOP concepts in Java
Python-OOP.pdf	OOP in Python
Principles-of-OOP-JavaScript.pdf	OOP principles in JavaScript
OOP-in-CPP.pdf	OOP in C++

Operating System

File	Description
Operating-System-Part-1.pdf	OS notes Part 1
Operating-System-Part-2.pdf	OS notes Part 2
Operating-System-Short-Notes.pdf	OS short revision notes
Operating-System-Interview-Questions.pdf	OS interview Q&A
Operating-System-Textbook-Dr-Mamta-Bansal.pdf	OS textbook

Software Engineering

File	Description
Software-Engineering.pdf	SE notes & concepts
SE-Interview-Questions.pdf	SE interview Q&A

System Design

File	Description
System-Design-Cheatsheet.pdf	System design cheatsheet
System-Design-Notes.pdf	System design notes
System-Design-Interview-Questions.pdf	System design interview Q&A
System-Design-Cheatsheet.md	System design cheatsheet (markdown)

📄 General Resources

File	Description
HR-Interview-Questions.pdf	HR / behavioral interview questions
LeetCode-Problems.pdf	LeetCode problem set
Cover-Letter-Template.docx	Cover letter template
List-of-Companies-Hiring-Freshers-Offcampus.md	Companies hiring freshers off-campus
25-Job-Interview-Preparation-Prompts.md	AI prompts for interview prep

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This repository is a curated collection of placement and AI/ML resources gathered from various sources across the internet. I do not claim ownership of any individual document or resource. If you are the original creator of any content here and would like credit or removal, please DM me on Instagram @krishnagangwal.ai.