IBPS SO IT 2026 🔥 OPERATING SYSTEMS ONE SHOT | Scheduling + Paging + PYQs

🔥 OPERATING SYSTEMS ONE SHOT FOR IBPS SO IT 2026 Operating Systems is one of the most important blocks in the IBPS SO IT Professional Knowledge section. In this lecture, we cover Processes, CPU Scheduling, Gantt Chart Numericals, Memory Management, Paging, Segmentation, Page Replacement and Belady's Anomaly — followed by 8 real PYQs. 00:01 - Introduction & Overview 00:10 - Program vs. Process vs. Thread 02:12 - Five-State Life Cycle (Process States) 03:52 - Process Control Block (PCB) 04:20 - Context Switch 04:54 - Scheduling Metrics (Arrival, Burst, Completion, Turnaround, Waiting Time) 07:02 - Scheduling Algorithms (FCFS, SJF, SRTF, Priority, Round Robin) 12:55 - Gantt Chart Numerical Guide 13:35 - FCFS Numerical Example 15:25 - SJF Numerical Example & Convoy Effect 17:08 - Memory Management: Fragmentation (Internal vs. External) 19:18 - Paging & Page Tables 21:04 - Translation Lookaside Buffer (TLB) 21:49 - Segmentation 22:52 - Virtual Memory & Demand Paging 24:08 - Page Replacement Algorithms (FIFO, LRU, Optimal) 25:52 - FIFO Numerical Example 28:05 - Belady’s Anomaly 28:47 - Thrashing 29:37 - Dirty Bit Concept 31:14 - Practice PYQs (Previous Year Questions) 📚 WHAT THIS LECTURE COVERS ✅ Program vs Process vs Thread ✅ Process States & State Transitions ✅ PCB — Process Control Block ✅ Context Switching ✅ Arrival Time, Burst Time & Completion Time ✅ Turnaround Time & Waiting Time ✅ Response Time ✅ FCFS ✅ SJF ✅ SRTF ✅ Priority Scheduling ✅ Round Robin ✅ Starvation & Aging ✅ Convoy Effect ✅ Gantt Chart — 5-Step Numerical Method ✅ External vs Internal Fragmentation ✅ Paging & Page Tables ✅ Frames, Pages & Offset ✅ TLB ✅ Segmentation ✅ Virtual Memory & Demand Paging ✅ Page Fault ✅ FIFO Page Replacement ✅ LRU Page Replacement ✅ Optimal Page Replacement ✅ Belady's Anomaly ✅ Thrashing ✅ Dirty Bit ✅ 8 Real PYQs 🔥 THE NUMERICALS YOU NEED TO KNOW A complete 5-step Gantt Chart method: 1️⃣ Draw the Gantt Chart 2️⃣ Find Completion Time (CT) 3️⃣ TAT = CT − AT 4️⃣ WT = TAT − BT 5️⃣ Calculate the average We also compare FCFS vs SJF with a worked example where the average waiting time drops from 17 to 3 simply by changing the execution order. 🧠 PAGE REPLACEMENT We clearly differentiate: FIFO → oldest loaded page LRU → least recently used page Optimal → page needed farthest in the future And then tackle Belady's Anomaly — more frames can actually produce more page faults under FIFO. 🎯 8 REAL PYQs The final section contains 8 exam-style PYQs from 2020–2025 covering scheduling, processes, page replacement and thrashing. Don't just watch the solution — pause before every question and attempt it yourself. 📒 Handwritten Notes + 9-page PDF: https://thevictorykey.com/library 📚 Complete IBPS SO IT 2026 Course / Batch: WhatsApp 9452903509 🚀 HELP US REACH 5,000 SUBSCRIBERS If you're preparing for IBPS SO IT, share this lecture with one serious aspirant from your batch or study group. At *5,000 subscribers*, PFRDA IT + SEBI IT material and the Most Important Questions set will be released. Subscribe for the complete IBPS SO IT 2026 Professional Knowledge series. Telegram Channel: http://t.me/thevictorykey DBMS One Shot for IBPS SO IT:    • DBMS One Shot for IBPS SO IT 2026 | PYQs |...   Last minute revision IBPS SO IT:    • IBPS SO IT Prelims: LAST REVISION Before E...   Data Structure and Algorithms (DSA) IBPS SO IT:    • DATA STRUCTURES & ALGORITHMS ONE SHOT REVI...   Cyber Security One shot for IBPS SO IT:    • Cyber Security One Shot for IBPS SO IT 202...   Computer Networks (CN) for IBPS SO IT:    • IBPS SO IT 2026 🔥 COMPUTER NETWORKS ONE SH...   DBMS One Shot for IBPS SO IT:    • DBMS One Shot for IBPS SO IT 2026 | ER Mod...   Playlist for IBPS SO IT:    • IBPS SO IT Prelims: LAST REVISION Before E...   ibps so it officer ibps so it officer prelims ibps so it officer prelims professional knowledge #IBPSSOIT #OperatingSystems #thevictorykey #gatewallah #physicswallah #government #codinginterview #faang #btech #btechjobs #gate2026 #ibpssoitofficer #ITOfficer #TVK-TheVictoryKey