Application layer

From Academic Kids

OSI Model
7Application layer
6Presentation layer
5Session layer
4Transport layer
3Network layer
2Data link layer
1Physical layer

The application layer is the seventh (7) level of the seven-layer OSI model. It interfaces directly to and performs common application services for the application processes; it also issues requests to the presentation layer.

The common application layer services provide semantic conversion between associated application processes. Note: Examples of common application services of general interest include the virtual file, virtual terminal, and job transfer and manipulation protocols.

Internet protocol suite   edit  (http://footwww.academickids.com/encyclopedia/index.php?title=Template:IPstack&action=edit)
Application layer HTTP, HTTPS, SMTP, FTP, UUCP, NNTP,
SSH, IRC, SNMP, SIP, RTP, Telnet ,...
Transport layer TCP, UDP, SCTP, DCCP, ...
Network layer IPv4, IPv6, ICMP, ARP, IGMP, ...
Data link layer Ethernet, Wi-Fi, Token ring, FDDI, PPP, ...
Physical layer RS-232, EIA-422, RS-449, EIA-485...

Examples

fr:Couche application it:Livello applicazioni tr:Application zh:应用层

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