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. 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...   Operating System (OS) One Shot for IBPS SO IT:    • IBPS SO IT 2026 🔥 OPERATING SYSTEMS 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...   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