Study Materials - Freshershunt

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Persistent Systems Interview Experience Position: Data Engineer Compensation: 19 LPA Experience: 3 Years 𝗣𝘆𝘁𝗵𝗼𝗻 & 𝗣𝘆𝗦𝗽𝗮𝗿𝗸: 1️⃣ How do you handle Data Skewness in a PySpark cluster? Mention techniques like Salting. 2️⃣ Explain the difference between transform() and udf(). Which is more efficient? 3️⃣ Write a Python script to remove duplicates from a list while maintaining the original order. 𝗖𝗹𝗼𝘂𝗱 & 𝗘𝗧𝗟 (𝗔𝘇𝘂𝗿𝗲): 4️⃣ What is the difference between an Azure Integration Runtime (IR) and a Self-Hosted IR? 5️⃣ Your pipeline is stuck in a Queued state. What are the top 3 things you would check? 6️⃣ How do you manage secrets securely in a production pipeline?. 𝗦𝗤𝗟 & 𝗗𝗮𝘁𝗮 𝗠𝗼𝗱𝗲𝗹𝗶𝗻𝗴: 7️⃣ What is the difference between a Star Schema and a Snowflake Schema? When would you choose one over the other? 8️⃣ How do you find the second most recent login for every user using Window functions? 9️⃣ Explain the MERGE statement. How is it different from UPSERT? 𝗦𝗼𝗳𝘁 𝗦𝗸𝗶𝗹𝗹𝘀/𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗶𝗻𝗴: 🔟 How do you explain a technical bottleneck (like a data lag) to a non-technical client?

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Redrob AI is hiring Mass Hiring Software Developers and Interns Graduation Year: 2023 / 2024 / 2025 / 2026 / 2027 / 2028 / 2029 Stipend: 1L per month Salary: 36 LPA Register Now: https://tinyurl.com/5yws4b3s MUST REGISTER - MASS HIRING ✅ Share this with your friends 😇

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⚠️ 𝗬𝗢𝗨'𝗥𝗘 𝗠𝗜𝗦𝗦𝗜𝗡𝗚 𝗝𝗢𝗕 𝗔𝗟𝗘𝗥𝗧𝗦! ⚠️ 💔 𝗦𝗔𝗗 𝗧𝗥𝗨𝗧𝗛: While you manually search LinkedIn, Glassdoor, Naukri... Our members get 𝗔𝗟𝗟 𝗻𝗲𝘄 𝗷𝗼𝗯 𝗽𝗼𝘀𝘁𝗶𝗻𝗴𝘀 delivered instantly! 📊 𝗧𝗛𝗜𝗦 𝗪𝗘𝗘𝗞 𝗔𝗟𝗢𝗡𝗘: 450+ fresh job links shared From 15+ platforms (LinkedIn, Glassdoor, AngelList...) 𝗙𝗿𝗲𝘀𝗵𝗲𝗿 𝗿𝗼𝗹𝗲𝘀 across IT, Finance, Marketing ⚡ 𝗪𝗛𝗜𝗟𝗘 𝗬𝗢𝗨 𝗦𝗟𝗘𝗘𝗣: We scan & share new openings Your competition applies first Best roles get filled 💸 𝗢𝗻𝗹𝘆 ₹𝟰𝟵𝟵 𝗳𝗼𝗿 𝗹𝗶𝗳𝗲𝘁𝗶𝗺𝗲 ⏰ 𝗦𝗮𝘃𝗲 𝟱+ 𝗵𝗼𝘂𝗿𝘀 𝗱𝗮𝗶𝗹𝘆 𝗷𝗼𝗯 𝗵𝘂𝗻𝘁𝗶𝗻𝗴 🔴 𝗣𝗿𝗶𝗰𝗲 𝗶𝗻𝗰𝗿𝗲𝗮𝘀𝗶𝗻𝗴 𝘀𝗼𝗼𝗻! 👉 𝗝𝗼𝗶𝗻 𝗡𝗼𝘄: https://freshershunt.in/pro ❓ 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻: How many good opportunities did you miss this week?

Redrob AI is hiring Software Developers and Interns from this hackathon: Graduation Year: 2023 / 2024 / 2025 / 2026 / 2027 / 2028 / 2029 Stipend: 1L per month Salary: 36 LPA Register Now: https://tinyurl.com/5yws4b3s

50 minutes for the webinar.

☁️📲AWS from Zero to Cloud: Hands-on Deployment Workshop🤳🏼 📅 04 June 2026⏰ 7:00 PM 🌐 English 🎓 Participation Certificate Included *Learn how to:* ✅ Understand Cloud & AWS Fundamentals ✅ Set Up Your AWS Account ✅ Launch Your First EC2 Server ✅ Deploy a Live Application on AWS ✅ Explore Real Cloud & DevOps Career Paths 🎯 Perfect for Final Year Students, Freshers & Working Professionals 🔥 Register FREE Now https://rebrand.ly/Free-DevopsWorkshop Build Your First Cloud Project Live!

☁️📲AWS from Zero to Cloud: Hands-on Deployment Workshop🤳🏼 📅 04 June 2026⏰ 7:00 PM 🌐 English 🎓 Participation Certificate Included *Learn how to:* ✅ Understand Cloud & AWS Fundamentals ✅ Set Up Your AWS Account ✅ Launch Your First EC2 Server ✅ Deploy a Live Application on AWS ✅ Explore Real Cloud & DevOps Career Paths 🎯 Perfect for Final Year Students, Freshers & Working Professionals 🔥 Register FREE Now https://rebrand.ly/Free-DevopsWorkshop Build Your First Cloud Project Live!

🚨 Infosys is Hiring Freshers! 🚨 💼 Role: Specialist Programmer L1/L2/L3 & Digital Specialist Engineer (Trainee) 📍 Location: Pan India (Off-Campus) 💰 Salary: ₹6.25 LPA – ₹21 LPA + Joining Bonus 🎓 Batch: 2026 Batch Only 📋 Eligibility: BE/BTech/ME/MTech/MCA/MSc (CS/IT/ECE & allied) 🔗 Full Details & Apply: https://freshershunt.in/infosys-off-campus-drive-2026-specialist-programmer/ ————————— ▶️ 𝐇𝐨𝐰 𝐭𝐨 𝐀𝐩𝐩𝐥𝐲 → https://youtu.be/Q4afjdBqZio 🔔 Telegram → https://t.me/freshershunt 💬 WhatsApp → https://freshershunt.in/WhatsApp

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FREE PYTHON + AI WEBINAR (BEGINNER FRIENDLY) Still confused where to start coding? 🤔 This session will give you clear roadmap from ZERO → IT career 📌 What you’ll learn: ✔ How to start Python from scratch ✔ Step-by-step roadmap to AI & Data Science ✔ Live coding demo ✔ Career guidance (for students & job seekers) 🗓 Date: May 3 (Sunday) ⏰ Time: 10:00 AM 🎁 Bonus: Free roadmap PDF for attendees 👉 Register now (FREE): https://zoom.us/webinar/register/1917775178472/WN_eYC_9bS5QhKU7ASLzX4klA ⚠️ Limited seats — don’t miss it

🚨 Infosys is Hiring Freshers! 🚨 💼 Role: Specialist Programmer L1/L2/L3 & Digital Specialist Engineer (Trainee) 📍 Location: Pan India (Off-Campus) 💰 Salary: ₹6.25 LPA – ₹21 LPA + Joining Bonus 🎓 Batch: 2026 Batch Only 📋 Eligibility: BE/BTech/ME/MTech/MCA/MSc (CS/IT/ECE & allied) 📅 Last Date: May 4, 2026 🔗 Full Details & Apply: https://freshershunt.in/infosys-off-campus-drive-2026-specialist-programmer/ ————————— ▶️ 𝐇𝐨𝐰 𝐭𝐨 𝐀𝐩𝐩𝐥𝐲 → https://youtu.be/Q4afjdBqZio 🔔 Telegram → https://t.me/freshershunt 💬 WhatsApp → https://freshershunt.in/WhatsApp

Claude AI Workshop – FREE (Today Only) 🚀 💸 Cost: ₹1,999 ₹0 (FREE!) What’s in it for you: ✅ Bonuses worth ₹5,000 - Claude Setup Guide + Full Session Notes ✅ Build powerful AI workflows using Claude ✅ Master 6 Powerful AI Tools ✅ Automate assignments, content & research ✅ Create apps & tools without coding ✅ Stand out in internships & placements ⚡ Only 100 Limited Seats! Enroll Now (Free): https://link.outskill.com/C53

🚨 Infosys is Hiring Freshers! 🚨 💼 Role: Specialist Programmer L1/L2/L3 & Digital Specialist Engineer (Trainee) 📍 Location: Pan India (Off-Campus) 💰 Salary: ₹6.25 LPA – ₹21 LPA + Joining Bonus 🎓 Batch: 2026 Batch Only 📋 Eligibility: BE/BTech/ME/MTech/MCA/MSc (CS/IT/ECE & allied) 📅 Last Date: May 4, 2026 🔗 Full Details & Apply: https://freshershunt.in/infosys-off-campus-drive-2026-specialist-programmer/ ————————— ▶️ 𝐇𝐨𝐰 𝐭𝐨 𝐀𝐩𝐩𝐥𝐲 → https://youtu.be/Q4afjdBqZio 🔔 Telegram → https://t.me/freshershunt 💬 WhatsApp → https://freshershunt.in/WhatsApp

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🚨 92/100 seats gone. Sirf 8 bachi hain. 🚨 Kal ek banda message kiya — "bhai Pro mein seat hai kya?" Nahi thi. Cap lag chuka tha us din. Usne bola "bas ek din late ho gaya." Wahi ek din mein 3 jobs gayi — jisme ek 6 LPA thi. Abhi 92/100 bharaa hai. 8 seats bachi hain. ₹499 mein lifetime access — ye offer dubara nahi aayega. Baad mein mat bolna "bata deta pehle." Bata raha hoon. Abhi. 👉 freshershunt.in/pro