IP Address (IPv4 vs IPv6) & OSI vs TCP/IP Model | Bihar STET CS

IP Address in Hindi — IPv4 aur IPv6 ka difference, aur OSI vs TCP/IP model ki poori mapping (7 layers → 4 layers). Sab kuch basic se, diagram ke saath, exam ke important points ke saath. Bihar STET Computer Science ke liye. Is video mein aap seekhenge: • IP address kya hota hai — network par device ka address (courier wala example) • IPv4 — 32 bits, 4 parts, har part 8 bits, dotted decimal notation • IPv6 kyun laaya gaya — devices badhte gaye, IPv4 mein address ki limitation • IPv6 — 128 bits, hexadecimal notation, colons • IPv4 vs IPv6 — poora comparison ek table mein • TCP/IP model ki 4 layers — Application, Transport, Internet, Network Access • MAPPING (sabse important) — OSI ki Application + Presentation + Session → TCP/IP ki Application OSI ka Transport → TCP/IP ka Transport OSI ka Network → TCP/IP ka Internet OSI ka Data Link + Physical → TCP/IP ka Network Access • IPv4 classes A, B, C, D, E aur unke default subnet mask • Class D = multicast, Class E = experimental • 127.0.0.1 — loopback address, localhost • TTL (IPv4) vs Hop Limit (IPv6) • ARP (IPv4) vs NDP (IPv6) ⏱️ CHAPTERS 0:00 Intro — WhatsApp message ka safar 0:38 Aaj ki video mein kya hai 0:56 IP address kya hota hai 1:47 IPv4 — 32 bits, dotted decimal 2:33 IPv6 kyun aaya 2:50 IPv6 — 128 bits, hexadecimal + IPv4 vs IPv6 3:30 OSI aur TCP/IP — dono models 4:02 TCP/IP ki 4 layers 4:29 MAPPING — OSI 7 layers → TCP/IP 4 layers 5:23 IPv4 classes aur default subnet mask 6:11 127.0.0.1 — loopback address 6:37 TTL vs Hop Limit 7:07 ARP vs NDP 7:38 Rapid revision 📚 KIS KE LIYE HAI Bihar STET Computer Science, TET, teacher recruitment aur dusre competitive exams ke liye. ▶️ PEHLE YE DEKHIYE — OSI Model in Hindi (saari 7 layers detail mein)    • OSI Model All 7 Layers Explained in Hindi ...   ▶️ PLAYLIST — Computer Science for Bihar STET [playlist link] Video useful laga to LIKE kariye aur channel SUBSCRIBE kar lijiye. Related Videos: Bihar STET 2026 Computer Science | Syllabus, Eligibility & Exam Pattern Update BPSC TRE 4.0 Computer Science Aarambh Series BPSC TRE 4.0 Detailed Computer Science Syllabus | BPSC TRE - 4.0 की कैसे करे तैयारी....?