What are the computer network protocols

Application Layer
　　DHCP (Dynamic Host Assignment Protocol) DNS (Domain Name Resolution) FTP (File Transfer Protocol) File Transfer Protocol Gopher (English original meaning: The Internet Gopher Protocol Chinese meaning: (RFC-1436) Internet Gopher Protocol) HTTP (Hypertext Transfer Protocol) IMAP4 (Internet Message Access Protocol 4) is the fourth version of the Internet Information Access Protocol IRC (Internet Relay Chat) Network Chat Protocol NNTP (Network News Transport Protocol) RFC-977) Network News Transfer Protocol XMPP Extensible Message Processing Field Protocol POP3 (Post Office Protocol 3) is the third version of Post Office Protocol SIP Signaling Control Protocol SMTP (Simple Mail Transfer Protocol) Simple Mail Transfer Protocol SNMP ( Simple Network Management Protocol) · SSH (Secure Shell) Secure Shell Protocol · TELNET Remote Login Protocol · RPC (Remote Procedure Call Protocol) (RFC-1831) Remote Procedure Call Protocol 　　· RTCP (RTP Control Protocol) RTP Control Protocol · RTSP (Real Time Streaming Protocol) Real-time Streaming Protocol · TLS (Transport Layer Security Protocol) Secure Transport Layer Protocol · SDP (Session Description Protocol) Session Description Protocol · SOAP (Simple Object Access Protocol) Simple Object Access Protocol GTP general data transmission platform STUN (Simple Traversal of UDP over NATs, UDP simple traversal of NAT) is a network protocol NTP (Network Time Protocol) network time protocol
transport layer
　　TCP (Transmission layer Control Protocol) Transmission Control Protocol 　　UDP (User Datagram Protocol) User Datagram Protocol DCCP 　　(Datagram Congestion Control Protocol) Datagram Congestion Control Protocol SCTP (STREAM CONTROL TRANSMISSION PROTOCOL) Stream Control Transmission Protocol RTPReal-time Transport Protocol or abbreviated RTP) real-time transport protocol RSVP (Resource ReSer Vation Protocol) resource reservation protocol PPTP (Point to Point Tunneling Protocol) point-to-point tunneling protocol
network layer
　　IP (IPv4IPv6 ) · ARP · RARP · ICMP · ICMPv6 · IGMP · RIP · OSPF · BGP · IS-IS · IPsec
Data Link Layer
　　802.11 · 802.16 · Wi-Fi · WiMAX · ATM · DTM · Token Ring · Ethernet · FDDI · Frame Relay · GPRS · EVDO · HSPA · HDLC · PPP · L2TP · ISDN
Physical Layer
　　Ethernet Physical Layer · Modem · PLC · SONET/SDH · G.709 · Optical Fiber · Coaxial Cable · Twisted Pair