Network Protocols & Port Numbers Trick | HTTP, DNS, SMTP | STET CS

Network protocols aur unke port numbers — HTTP, HTTPS, FTP, DNS, SMTP, POP3, IMAP, Telnet, SSH aur DHCP — ratne ki jagah ek simple building wali story se. Har protocol ke saath full form, port number aur ek previous year question. Bihar STET Computer Science ke liye. Is video mein aap seekhenge: • Protocol kya hota hai — rules ka set, phone wale example se • Port number kya hota hai — computer ek building, port us building ka room • HTTP — Hypertext Transfer Protocol — port 80 • HTTPS — Hypertext Transfer Protocol Secure — port 443 • FTP — File Transfer Protocol — port 20 (data) aur 21 (control) • DNS — Domain Name System — port 53 (TCP ho ya UDP, port 53 hi rahega) • SMTP — Simple Mail Transfer Protocol — port 25 (email bhejne ke liye) • POP3 — Post Office Protocol v3 — port 110 (email download karne ke liye) • IMAP — Internet Message Access Protocol — port 143 (multi-device sync) • Telnet — port 23 (secure nahi hai) • SSH — Secure Shell — port 22 (secure remote login) • DHCP — Dynamic Host Configuration Protocol — port 67 (server), 68 (client) • Har protocol ke baad ek previous year question 💡 SABSE IMPORTANT PAIR — Telnet 23 (insecure) vs SSH 22 (secure) ⏱️ CHAPTERS 0:00 Intro — background mein kya ho raha hota hai 0:36 Protocol kya hota hai 1:02 Port number kya hota hai (building wala example) 1:32 HTTP — port 80 2:03 HTTPS — port 443 2:41 FTP — port 20 aur 21 3:27 DNS — port 53 4:12 SMTP — port 25 4:37 POP3 — port 110 5:01 IMAP — port 143 5:25 Telnet — port 23 5:55 SSH — port 22 6:30 DHCP — port 67 aur 68 7:01 Poori story ek saath — recap 8:23 Revision sheet 📚 KIS KE LIYE HAI Bihar STET Computer Science, TET, teacher recruitment aur dusre competitive exams ki taiyari karne wale students ke liye. ▶️ PLAYLIST — Computer Science for Bihar STET    • OSI Model All 7 Layers Explained in Hindi ...   Video useful laga to LIKE kariye aur channel SUBSCRIBE kar lijiye. #PortNumbers #NetworkProtocols #BiharSTET