Friends I am Here Talk about the Fundamentals idea about the Application Layer Protocol.
Layered Architecture of TCP/IP And OSI Reference Model
What is Application Layer?
* It is Used In Both TCP/IP and OSI reference Model
In TCP/IP, the Application Layer contains all protocols and methods that fall into the realm of process-to-process communications via an Internet Protocol (IP) network using the Transport Layer protocols to establish underlying host-to-host connections.
In the OSI model, the definition of its Application Layer is narrower in scope, explicitly distinguishing additional functionality above the Transport Layer at two additional levels: Session Layer and Presentation Layer. OSI specifies strict modular separation of functionality at these layers and provides protocol implementations for each layer.
The Major Protocols Used In Application Layer are
HTTP
The Hypertext Transfer Protocol (HTTP) is a networking protocol for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web.
SMTP
Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (e-mail) transmission across Internet Protocol (IP) networks.
FTP
File Transfer Protocol (FTP) is a standard network protocol used to copy a file from one host to another over a TCP/IP-based network, such as the Internet.
POP/IMAP
Interim Mail Access Protocol an Post Office Protocol
There are the Protocols in Application Layer
* 9P, Plan 9 from Bell Labs distributed file system protocol
* AFP,
* APPC, Advanced Program-to-Program Communication
* AMQP, Advanced Message Queuing Protocol
* BitTorrent
* Atom Publishing Protocol
* BOOTP, Bootstrap Protocol
* CFDP, Coherent File Distribution Protocol
* DDS, Data Distribution Service
* DHCP, Dynamic Host Configuration Protocol
* DeviceNet
* DNS, Domain Name System (Service) Protocol
* eDonkey
* ENRP, Endpoint Handlespace Redundancy Protocol
* FastTrack (KaZaa, Grokster, iMesh)
* Finger, User Information Protocol
* Freenet
* FTAM, File Transfer Access and Management
* FTP, File Transfer Protocol
* Gopher, Gopher protocol
* HL7, Health Level Seven
* HTTP, HyperText Transfer Protocol
* H.323, Packet-Based Multimedia Communications System
* IMAP, IMAP4, Internet Message Access Protocol (version 4)
* IRCP, Internet Relay Chat Protocol
* Kademlia
* LDAP, Lightweight Directory Access Protocol
* LPD, Line Printer Daemon Protocol
* MIME (S-MIME), Multipurpose Internet Mail Extensions and Secure MIME
* Modbus
* Netconf
* NFS, Network File System
* NIS, Network Information Service
* NNTP, Network News Transfer Protocol
* NTCIP, National Transportation Communications for Intelligent Transportation System Protocol
* NTP, Network Time Protocol
* OSCAR, AOL Instant Messenger Protocol
* PNRP, Peer Name Resolution Protocol
* POP, POP3, Post Office Protocol (version 3)
* RDP, Remote Desktop Protocol
* Rlogin, Remote Login in UNIX Systems
* RPC, Remote Procedure Call
* RTMP Real Time Messaging Protocol
* RTP, Real-time Transport Protocol
* RTPS, Real Time Publish Subscribe
* RTSP, Real Time Streaming Protocol
* SAP, Session Announcement Protocol
* SDP, Session Description Protocol
* SIP, Session Initiation Protocol
* SLP, Service Location Protocol
* SMB, Server Message Block
* SMTP, Simple Mail Transfer Protocol
* SNMP, Simple Network Management Protocol
* SNTP, Simple Network Time Protocol
* SPTP, Secure Parallel Transfer Protocol
* SSH, Secure Shell
* SSMS, Secure SMS Messaging Protocol
* TCAP, Transaction Capabilities Application Part
* TDS, Tabular Data Stream
* TELNET, Terminal Emulation Protocol of TCP/IP
* TFTP, Trivial File Transfer Protocol
* TSP, Time Stamp Protocol
* VTP, Virtual Terminal Protocol
* Waka, an HTTP replacement protocol
* Whois (and RWhois), Remote Directory Access Protocol
* WebDAV
* X.400, Message Handling Service Protocol
* X.500, Directory Access Protocol (DAP)
* XMPP, Extensible Messaging and Presence Protocol
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