IBPS SO IT 2026 🔥 COMPUTER NETWORKS ONE SHOT | OSI + SUBNETTING + PYQs

🔥 COMPUTER NETWORKS ONE SHOT FOR IBPS SO IT 2026 Computer Networks is one of the highest-frequency areas in the IBPS SO IT Professional Knowledge section. In this One Shot lecture, we cover the most important concepts you need for the exam — from the OSI Model to IPv4 Subnetting, followed by real PYQs. 📚 WHAT YOU WILL COVER ✅ OSI Model — All 7 Layers ✅ Functions of Each OSI Layer ✅ PDU: Data → Segment → Packet → Frame → Bit ✅ OSI vs TCP/IP Model ✅ Network Devices — Hub, Repeater, Bridge, Switch, Router & Gateway ✅ IPv4 Addressing ✅ Network & Host Portions ✅ IP Address Classes ✅ Private IP Address Ranges ✅ Loopback Address ✅ Subnet Masks & CIDR ✅ Subnetting Formulas ✅ Block Size Calculation ✅ Network Address & Broadcast Address ✅ Usable Hosts Calculation ✅ 8 Real PYQs from 2018–2024 🔥 SUBNETTING EXAMPLE We solve: 192.168.1.100/26 and find: • Subnet Mask • Network Address • Broadcast Address • Usable Host Range • Number of Usable Hosts Timestamps: 00:00 - Introduction and Importance of Computer Networks PYQs 00:44 - OSI Model Overview: The 7-Layer ISO Reference Model 01:21 - Application Layer: User Interface and Key Protocols (HTTP, FTP, SMTP, DNS) 02:01 - Presentation Layer: Translation, Compression, and Encryption (SSL/TLS) 02:26 - Session Layer: Managing Dialogues and Connections (NetBIOS, RPC) 02:47 - Transport Layer: End-to-End Delivery, Segmentation, and TCP vs. UDP 03:22 - Network Layer: Routing and Logical IP Addressing (Routers) 03:29 - Data Link Layer: Node-to-Node Delivery, Framing, and MAC Addressing (Switches/Bridges) 03:54 - Physical Layer: Raw Bits and Hardware (Hubs and Repeaters) 04:18 - PDU Chain Breakdown (Bits, Frames, Packets, Segments, Data) 05:11 - OSI Model vs. TCP/IP Model: Key Differences and Layer Mapping 06:23 - Network Devices by Layer: Layer 1 to Layer 7 Functionality 08:52 - IPv4 Addressing Fundamentals: Bits, Octets, and Classes 10:06 - IP Class Ranges (Class A-E) and Default Subnet Masks 12:21 - Loopback Addresses and the 127.x.x.x Reserve Block 12:58 - Private vs. Public IP Ranges (RFC 1918) 13:58 - Class C Subnetting Mathematics: Calculating Networks and Hosts 16:10 - Detailed Subnetting Tutorial: Calculating Subnet Masks and Block Sizes 25:27 - Computer Networks PYQs: Practice Questions and Solutions 29:36 - One-Page Final Revision Summary 🎯 FOR IBPS SO IT 2026 This lecture is part of the Professional Knowledge series for IBPS SO IT Officer 2026. 📌 Don't just watch the concepts — pause before every PYQ and solve it yourself. 📒 Handwritten Notes + One-Page Revision Sheet: [Add your notes link here] 📚 Complete Course / Batch: [Add your course link here] 🚀 HELP US REACH 5,000 SUBSCRIBERS If you're preparing for IBPS SO IT, share this lecture with one serious aspirant from your batch/group. At 5,000 subscribers, PFRDA IT + SEBI IT material and the Most Important Questions set will be released. Subscribe and join us for the complete IT exam preparation series. ibps so it prelims ibps so it prelims professional knowledge #IBPSSOIT #ComputerNetworks #IBPSSOIT2026 #coalindialimited #coalindiamt #thevictorykey #SEBIIT #PFRDAIT #ITOfficer #TVK-TheVictoryKey