Protocols
Computers · प्रोटोकॉल
📋Quick Overview
A network protocol is a set of rules governing communication between devices. HTTP (HyperText Transfer Protocol) is used for web browsing, SMTP for email sending, FTP for file transfer, and TCP/IP is the foundational internet protocol. IPv4 uses 32-bit addresses while IPv6 uses 128-bit.
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HTTP = HyperText Transfer Protocol; HTTPS = HTTP + Secure (encrypted with SSL/TLS)
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TCP = reliable, connection-oriented; UDP = fast, connectionless (used for streaming, gaming)
📖Protocols
| Protocol | Full Form | Use |
|---|---|---|
| HTTP | HyperText Transfer Protocol | Web browsing (port 80) |
| HTTPS | HTTP Secure | Secure web browsing (port 443) |
| FTP | File Transfer Protocol | File upload/download (port 21) |
| SMTP | Simple Mail Transfer Protocol | Sending emails (port 25) |
| POP3 | Post Office Protocol 3 | Receiving emails (port 110) |
| IMAP | Internet Message Access Protocol | Sync emails across devices (port 143) |
| DNS | Domain Name System | Converts domain names to IP (port 53) |
| TCP | Transmission Control Protocol | Reliable data transmission |
| UDP | User Datagram Protocol | Fast, unreliable (streaming, VoIP) |
| IP | Internet Protocol | Addressing & routing packets |
📝Key Points
- •HTTP: Web browsing (port 80)
- •HTTPS: Secure web browsing (port 443)
- •FTP: File upload/download (port 21)
- •SMTP: Sending emails (port 25)
- •POP3: Receiving emails (port 110)
- •IMAP: Sync emails across devices (port 143)