Coding Interview Resources

🤖 𝗔𝗜 + 𝗗𝗮𝘁𝗮 = 𝗧𝗵𝗲 𝗙𝘂𝘁𝘂𝗿𝗲 𝗼𝗳 𝗝𝗼𝗯𝘀 Start your journey in Data Analytics & Data Science with AI Certification and gain skills companies are actively hiring for. 📊 Data Analysis 🐍 Python Programming 🤖 Machine Learning 📈 AI-Driven Insights 🔥 Perfect for College Students ,Freshers & Professionals 1️⃣𝗣𝘆𝘁𝗵𝗼𝗻 :- https://pdlink.in/3OD9jI1 2️⃣𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 :- https://pdlink.in/4kucM7E 3️⃣𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 :- https://pdlink.in/4ay4wPG 4️⃣𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 :- https://pdlink.in/3ZtIZm9 5️⃣𝗔𝗜 & 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 :- https://pdlink.in/4rMivIA Don't Miss This Opportunity . Get Placement Assistance With 5000+ Companies

How to send follow up email to a recruiter 👇👇 Dear [Recruiter’s Name], I hope this email finds you doing well. I wanted to take a moment to express my sincere gratitude for the time and consideration you have given me throughout the recruitment process for the [position] role at [company]. I understand that you must be extremely busy and receive countless applications, so I wanted to reach out and follow up on the status of my application. If it’s not too much trouble, could you kindly provide me with any updates or feedback you may have? I want to assure you that I remain genuinely interested in the opportunity to join the team at [company] and I would be honored to discuss my qualifications further. If there are any additional materials or information you require from me, please don’t hesitate to let me know. Thank you for your time and consideration. I appreciate the effort you put into recruiting and look forward to hearing from you soon. Warmest regards, (Tap to copy)

💻 𝗙𝗥𝗘𝗘 𝗘𝘅𝗰𝗲𝗹 𝗠𝗮𝘀𝘁𝗲𝗿𝗰𝗹𝗮𝘀𝘀 – 𝗕𝗲𝘆𝗼𝗻𝗱 𝗖𝗼𝗹𝗹𝗲𝗴𝗲 𝗕𝗮𝘀𝗶𝗰𝘀 Still using Excel only for simple tables? Learn how professionals use Excel for data analysis, insights & reporting. ✔ Real business use cases ✔ Must-know Excel formulas ✔ Data cleaning & analysis ✔ Career guidance 📅 13 March | ⏰ 6 PM 𝗥𝗲𝗴𝗶𝘀𝘁𝗲𝗿 𝗙𝗼𝗿 𝗙𝗥𝗘𝗘👇 :-  https://pdlink.in/4bEDmIw 🚀 Upgrade your Excel skills today!

SQL Interview Questions with Answers 1. How to change a table name in SQL? This is the command to change a table name in SQL: ALTER TABLE table_name RENAME TO new_table_name; We will start off by giving the keywords ALTER TABLE, then we will follow it up by giving the original name of the table, after that, we will give in the keywords RENAME TO and finally, we will give the new table name. 2. How to use LIKE in SQL? The LIKE operator checks if an attribute value matches a given string pattern. Here is an example of LIKE operator SELECT * FROM employees WHERE first_name like ‘Steven’; With this command, we will be able to extract all the records where the first name is like “Steven”. 3. If we drop a table, does it also drop related objects like constraints, indexes, columns, default, views and sorted procedures? Yes, SQL server drops all related objects, which exists inside a table like constraints, indexes, columns, defaults etc. But dropping a table will not drop views and sorted procedures as they exist outside the table. 4. Explain SQL Constraints. SQL Constraints are used to specify the rules of data type in a table. They can be specified while creating and altering the table. The following are the constraints in SQL: NOT NULL CHECK DEFAULT UNIQUE PRIMARY KEY FOREIGN KEY React ❤️ for more

📢 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗔𝗹𝗲𝗿𝘁 – 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 𝗪𝗶𝘁𝗵 𝗔𝗜 Upgrade your career with AI-powered data analytics skills. 📊 Learn Data Analytics from Scratch 🤖 AI Tools & Automation 📈 Data Visualization & Insights 🎓 Certification Program 🔥 Highly demanded skill in today’s job market. 𝗔𝗽𝗽𝗹𝘆 𝗡𝗼𝘄👇 :-  https://pdlink.in/4syEItX 🚀 Perfect for Students ,Freshers & Working Professionals

🔥 𝗔𝗜 & 𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 Upgrade your career with one of the most in-demand tech skills of 2026! ✔ Artificial Intelligence ✔ Machine Learning ✔ Python for Data Science ✔ Real-World Projects 🎓 Get Certified & Build Your Tech Career 𝗔𝗽𝗽𝗹𝘆 𝗡𝗼𝘄👇 :-  https://pdlink.in/4qHVFkI 🚀 Perfect for Students ,Freshers & Working Professionals

𝗗𝗲𝘃𝗢𝗽𝘀 𝗙𝗥𝗘𝗘 𝗢𝗻𝗹𝗶𝗻𝗲 𝗠𝗮𝘀𝘁𝗲𝗿𝗰𝗹𝗮𝘀𝘀 𝗕𝘆 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝘀😍 - Bridge the Gap Between Your Current Skills and What DevOps Roles Demand - Know The Roadmap To Become DevOps Engineer In 2026 Eligibility :- Students ,Freshers & Working Professionals 𝗥𝗲𝗴𝗶𝘀𝘁𝗲𝗿 𝗙𝗼𝗿 𝗙𝗥𝗘𝗘👇 :-  https://pdlink.in/40YmeqV ( Limited Slots ..Hurry Up🏃‍♂️ ) Date & Time :- March 10 , 2026 , 7:00 PM

Top Coding Domains You Should Explore in 2026 ✅ • Backend Development Build server-side systems Handle logic, databases, APIs Core skills Languages: Java, Python, Node.js Databases: MySQL, PostgreSQL, MongoDB APIs: REST, GraphQL Auth, caching, scalability Who fits: Strong logic, system thinking, long-term products • Frontend Development Build user interfaces Focus on user experience Core skills HTML, CSS, JavaScript React, Angular, Vue State management, browser performance Who fits: Visual thinkers, UI focus, fast feedback lovers • Mobile App Development Build Android and iOS apps Core skills Android: Kotlin, Java iOS: Swift Flutter, React Native App lifecycle Who fits: Mobile-first mindset, product builders, app store focus • Data Analytics Turn data into insights Core skills SQL, Excel Python Power BI, Tableau Who fits: Business thinkers, numbers-driven minds, decision support roles • Data Science and ML Build predictive systems Core skills Python Statistics Machine learning Pandas, NumPy, scikit-learn Who fits: Math interest, research mindset, model builders • DevOps and Cloud Deploy and scale systems Core skills Linux AWS, Azure, GCP Docker, Kubernetes CI/CD Who fits: Automation lovers, system reliability focus, high-pressure roles • Cybersecurity Protect systems and data Core skills Networking Linux Security tools Risk analysis Who fits: Detail-oriented, defensive mindset, compliance roles • Game Development Build interactive games Core skills C++, C# Unity, Unreal Physics basics, game logic Who fits: Creative coders, graphics interest, real-time systems Best career advice • Pick one domain • Build real projects • Learn tools used in jobs • Switch later if needed Which domain are you targeting next? Development 👍 Data ❤️ DevOps/ Cybersecurity 🙏 Still exploring 😮

🚀𝗚𝗲𝘁 𝗧𝗼𝗽 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝗜𝗜𝗧's & 𝗜𝗜𝗠  Dreaming of studying at an IIT and building a career in AI ? This is your chance ✅ Prestigious IIT  Certification ✅ Learn directly from IIT Professors ✅ Placement Assistance with 5000+ Companies 💡 Today’s top companies are actively looking for professionals with AI skills.  𝗥𝗲𝗴𝗶𝘀𝘁𝗲𝗿 𝗡𝗼𝘄 👇 :-  𝗔𝗜 & 𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 :- https://pdlink.in/4kucM7E 𝗔𝗜 & 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 :- https://pdlink.in/4rMivIA 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 𝗪𝗶𝘁𝗵 𝗔𝗜 :- https://pdlink.in/4ay4wPG ⏳ Limited seats – Register before the link expires!

FREE sites to improve your coding knowledge 👨🏻‍💻📝 - 🌐 HTML - w3schools.com 💅 CSS - web.dev/learn/css 🔥 JavaScript - javascript.info 🐙 Git and Github - git-scm.com 📚 API - rapidapi.com/learn 🐍 Python - t.me/pythonproz ⚛️ React - react-tutorial.app 🎡 Laravel - laracasts.com 🌟 VueJS - learnvue.co 🔍 SQL - t.me/sqlspecialist 🌈 Tailwind CSS - tailwindcss.com 🚀 Go - gobyexample.com 🐳 Docker - docker-curriculum.com 🦋 Flutter - flutter.dev/learn 🦀 Rust - rust-lang.org/learn 🧠 AI/ML - t.me/machinelearning_deeplearning ⚙️ DevOps - t.me/AWS_GCP_Azure 🧩 TypeScript - typescriptlang.org/learn React ❤️ for more like this

𝗜𝗜𝗧 𝗥𝗼𝗼𝗿𝗸𝗲𝗲 𝗢𝗳𝗳𝗲𝗿𝗶𝗻𝗴 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗣𝗿𝗼𝗴𝗿𝗮𝗺 𝗶𝗻 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀📊 𝘄𝗶𝘁𝗵 𝗔𝗜 𝗮𝗻𝗱 𝗚𝗲𝗻 𝗔𝗜 😍 Placement Assistance With 5000+ companies. 🔥 Companies are actively hiring candidates with Data Analytics skills. 🎓 Prestigious IIT certificate 🔥 Hands-on industry projects 📈 Career-ready skills for data & AI jobs 𝐑𝐞𝐠𝐢𝐬𝐭𝐞𝐫 𝐍𝐨𝐰👇 :-  https://pdlink.in/4rwqIAm Limited seats available. Apply now to secure your spot

9 tips to get better at debugging code: Read error messages carefully — they often tell you everything Use print/log statements to trace code execution Check one small part at a time Reproduce the bug consistently Use a debugger to step through code line by line Compare working vs broken code Check for typos, null values, and off-by-one errors Rubber duck debugging — explain your code out loud Take breaks — fresh eyes spot bugs faster Coding Interview Resources:👇 https://whatsapp.com/channel/0029VammZijATRSlLxywEC3X ENJOY LEARNING 👍👍

𝗔𝗜 & 𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗣𝗿𝗼𝗴𝗿𝗮𝗺 𝗕𝘆 𝗜𝗜𝗧 𝗥𝗼𝗼𝗿𝗸𝗲𝗲 😍 👉Learn from IIT faculty and industry experts 🔥100% Online | 6 Months 🎓Get Prestigious Certificate  💫Companies are actively hiring candidates with Data Science & AI skills.  Deadline: 8th March 2026 𝗥𝗲𝗴𝗶𝘀𝘁𝗲𝗿 𝗙𝗼𝗿 𝗦𝗰𝗵𝗼𝗹𝗮𝗿𝘀𝗵𝗶𝗽 𝗧𝗲𝘀𝘁 👇 :-  https://pdlink.in/4kucM7E ✅ Limited seats only

💻 Coding Interview Foundations — Part 1: Programming Language 🚀 Before jumping into Data Structures & Algorithms, master one programming language deeply. (Recommended: Python — simple, powerful, interview-friendly ⭐) 🔹 What You Must Master ✅ 1. Syntax & Basics - Variables - Data types → int, float, str, bool - Lists, Tuples, Sets, Dictionaries - Input / Output - Type casting 👉 If syntax is weak → logic won’t help in interviews. ✅ 2. Loops & Conditions - if-else statements - for loop - while loop - break, continue - Nested loops 🔥 Used in almost every coding problem. ✅ 3. Functions - Function definition - Parameters & return values - Default arguments - Recursion basics ✔ Helps write modular and structured code. ✅ 4. Important Built-in Libraries (Python Users ⭐) - collections → Counter, defaultdict - heapq → Priority Queue - math - itertools Using built-ins efficiently = strong problem solving. ✅ 5. Writing Clean Code - Meaningful variable names - Small reusable functions - Handle edge cases - Clear logic structure Interviewers evaluate thinking + code quality. ⏱️ Recommended Time Beginner → 2 weeks Intermediate → 4–5 days revision Daily: 30 min concept revision 1–2 practice problems ❌ Avoid These Mistakes - Learning multiple languages at once - Jumping to advanced topics too early - Memorizing solutions without understanding Python Resources: https://whatsapp.com/channel/0029VbBDoisBvvscrno41d1l Double Tap ♥️ For More

𝗧𝗼𝗽 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝗢𝗳𝗳𝗲𝗿𝗲𝗱 𝗕𝘆 𝗜𝗜𝗧'𝘀 & 𝗜𝗜𝗠 😍  Placement Assistance With 5000+ companies. Companies are actively hiring candidates with AI & ML skills. ⏳ Deadline: 28th Feb 2026 𝗔𝗜 & 𝗗𝗮𝘁𝗮 𝗦𝗰𝗶𝗲𝗻𝗰𝗲 :- https://pdlink.in/4kucM7E 𝗔𝗜 & 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 :- https://pdlink.in/4rMivIA 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 𝗪𝗶𝘁𝗵 𝗔𝗜 :- https://pdlink.in/4ay4wPG 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 𝗪𝗶𝘁𝗵 𝗔𝗜 :- https://pdlink.in/3ZtIZm9 𝗠𝗟 𝗪𝗶𝘁𝗵 𝗣𝘆𝘁𝗵𝗼𝗻 :- https://pdlink.in/3OD9jI1 ✅ Hurry Up...Limited seats only

💻 Don’t Overwhelm to Prepare for Coding Interviews — It’s Only This Much 🚀 🔹 FOUNDATIONS (Must First) 1️⃣ Programming Language Mastery - Choose one: Python ⭐ (most popular) Java C++ JavaScript - Focus on: Syntax Loops & conditions Functions Built-in libraries Writing clean code 2️⃣ Time & Space Complexity - Big-O notation - Time vs space tradeoff - Best / average / worst case - Complexity analysis 🔥 Very important for interviews 3️⃣ Problem Solving Basics - Pattern recognition - Breaking problems into steps - Writing pseudocode - Edge case handling 🔥 CORE DATA STRUCTURES (HIGH PRIORITY) 4️⃣ Arrays - Traversal - Two pointer technique - Sliding window - Prefix sum (🔥 Most asked topic) 5️⃣ Strings - Manipulation - Palindrome problems - Pattern matching 6️⃣ Hashing - HashMap / Dictionary - Frequency counting - Fast lookup problems 7️⃣ Linked List - Insert/delete operations - Reverse list - Fast & slow pointer 8️⃣ Stack & Queue - LIFO / FIFO - Valid parentheses - Monotonic stack 9️⃣ Trees - Binary tree traversal - Binary Search Tree - Recursion - Tree depth / height (🔥 Very important) 🔟 Heap / Priority Queue - Min / max heap - Top K problems 1️⃣1️⃣ Graphs - BFS / DFS - Shortest path - Cycle detection 🚀 ALGORITHMS (CORE INTERVIEW TOPICS) 1️⃣2️⃣ Searching Algorithms - Linear search - Binary search 1️⃣3️⃣ Sorting Algorithms - Quick sort - Merge sort - Heap sort 1️⃣4️⃣ Recursion & Backtracking - Subsets - Permutations - N-Queens 1️⃣5️⃣ Greedy Algorithms - Activity selection - Interval problems 1️⃣6️⃣ Dynamic Programming (DP) - Memoization - Tabulation - Knapsack problems (🔥 Hard but high-value topic) ⚙️ INTERVIEW SKILLS 1️⃣7️⃣ Coding Patterns (Must Know ⭐) - Two pointers - Sliding window - Fast & slow pointers - Divide & conquer - Backtracking - BFS / DFS patterns 1️⃣8️⃣ Writing Clean Code - Readable variable names - Modular functions - Handling edge cases 1️⃣9️⃣ Debugging Skills - Test cases - Dry run - Error fixing 2️⃣0️⃣ Communication During Interview - Explain approach first - Think aloud - Discuss complexity (🔥 Often ignored but important) 🌟 ADVANCED / TOP COMPANY PREP 2️⃣1️⃣ System Design Basics - Scalability - Load balancing - Architecture concepts 2️⃣2️⃣ Object-Oriented Design - Classes & objects - Design principles - Low-level design 2️⃣3️⃣ Competitive Programming (Optional) - Codeforces - LeetCode contests ⭐ Best Practice Platforms - LeetCode ⭐ - HackerRank - Codeforces - GeeksforGeeks ⭐ Double Tap ♥️ For More

𝗣𝗮𝘆 𝗔𝗳𝘁𝗲𝗿 𝗣𝗹𝗮𝗰𝗲𝗺𝗲𝗻𝘁 𝗧𝗿𝗮𝗶𝗻𝗶𝗻𝗴 😍 𝗟𝗲𝗮𝗿𝗻 𝗖𝗼𝗱𝗶𝗻𝗴 & 𝗚𝗲𝘁 𝗣𝗹𝗮𝗰𝗲𝗱 𝗜𝗻 𝗧𝗼𝗽 𝗠𝗡𝗖𝘀  Eligibility:- BE/BTech / BCA / BSc 🌟 2000+ Students Placed 🤝 500+ Hiring Partners 💼 Avg. Rs. 7.4 LPA 🚀 41 LPA Highest Package 𝗕𝗼𝗼𝗸 𝗮 𝗙𝗥𝗘𝗘 𝗗𝗲𝗺𝗼👇:- https://pdlink.in/4hO7rWY ( Hurry Up 🏃‍♂️Limited Slots )

✅ 🔤 A–Z of Full Stack Development A – Authentication Verifying user identity using methods like login, tokens, or biometrics. B – Build Tools Automate tasks like bundling, transpiling, and optimizing code (e.g., Webpack, Vite). C – CRUD Create, Read, Update, Delete – the core operations of most web apps. D – Deployment Publishing your app to a live server or cloud platform. E – Environment Variables Store sensitive data like API keys securely outside your codebase. F – Frameworks Tools that simplify development (e.g., React, Express, Django). G – GraphQL A query language for APIs that gives clients exactly the data they need. H – HTTP (HyperText Transfer Protocol) Foundation of data communication on the web. I – Integration Connecting different systems or services (e.g., payment gateways, APIs). J – JWT (JSON Web Token) Compact way to securely transmit information between parties for authentication. K – Kubernetes Tool for automating deployment and scaling of containerized applications. L – Load Balancer Distributes incoming traffic across multiple servers for better performance. M – Middleware Functions that run during request/response cycles in backend frameworks. N – NPM (Node Package Manager) Tool to manage JavaScript packages and dependencies. O – ORM (Object-Relational Mapping) Maps database tables to objects in code (e.g., Sequelize, Prisma). P – PostgreSQL Powerful open-source relational database system. Q – Queue Used for handling background tasks (e.g., RabbitMQ, Redis queues). R – REST API Architectural style for designing networked applications using HTTP. S – Sessions Store user data across multiple requests (e.g., login sessions). T – Testing Ensures your code works as expected (e.g., Jest, Mocha, Cypress). U – UX (User Experience) Designing intuitive and enjoyable user interactions. V – Version Control Track and manage code changes (e.g., Git, GitHub). W – WebSockets Enable real-time communication between client and server. X – XSS (Cross-Site Scripting) Security vulnerability where attackers inject malicious scripts into web pages. Y – YAML Human-readable data format often used for configuration files. Z – Zero Downtime Deployment Deploy updates without interrupting the running application. 💬 Double Tap ❤️ for more!

𝗔𝗜 & 𝗠𝗟 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗕𝘆 𝗜𝗜𝗧 𝗣𝗮𝘁𝗻𝗮 😍 Placement Assistance With 5000+ companies. Companies are actively hiring candidates with AI & ML skills. 🎓 Prestigious IIT certificate 🔥 Hands-on industry projects 📈 Career-ready skills for AI & ML jobs Deadline :- March 1, 2026   𝗥𝗲𝗴𝗶𝘀𝘁𝗲𝗿 𝗙𝗼𝗿 𝗦𝗰𝗵𝗼𝗹𝗮𝗿𝘀𝗵𝗶𝗽 𝗧𝗲𝘀𝘁 👇 :-  https://pdlink.in/4pBNxkV ✅ Limited seats only

✅ Backend Basics Interview Questions – Part 1 (Node.js) 🧠💻 📍 1. What is Node.js? A: Node.js is a runtime environment that lets you run JavaScript on the server side. It uses Google’s V8 engine and is designed for building scalable network applications. 📍 2. How is Node.js different from traditional server-side platforms? A: Unlike PHP or Java, Node.js is event-driven and non-blocking. This makes it lightweight and efficient for I/O-heavy operations like APIs and real-time apps. 📍 3. What is the role of the package.json file? A: It stores metadata about your project (name, version, scripts) and dependencies. It’s essential for managing and sharing Node.js projects. 📍 4. What are CommonJS modules in Node.js? A: Node uses CommonJS to handle modules. You use require() to import and module.exports to export code between files. 📍 5. What is the Event Loop in Node.js? A: It allows Node.js to handle many connections asynchronously without blocking. It’s the heart of Node’s non-blocking architecture. 📍 6. What is middleware in Node.js (Express)? A: Middleware functions process requests before sending a response. They can be used for logging, auth, validation, etc. 📍 7. What is the difference between process.nextTick(), setTimeout(), and setImmediate()? A: ⦁ process.nextTick() runs after the current operation, before the next event loop. ⦁ setTimeout() runs after a minimum delay. ⦁ setImmediate() runs on the next cycle of the event loop. 📍 8. What is a callback function in Node.js? A: A function passed as an argument to another function, executed after an async task finishes. It’s the core of async programming in Node. 📍 9. What are Streams in Node.js? A: Streams let you read/write data piece-by-piece (chunks), great for handling large files. Types: Readable, Writable, Duplex, Transform. 📍 10. What is the difference between require and import? A: ⦁ require is CommonJS (used in Node.js by default). ⦁ import is ES6 module syntax (used with "type": "module" in package.json). 💬 Tap ❤️ for more!