OSI MODEL

Define:

The OSI (Open System Interconnection) Model is a conceptual framework used to understand and standardize network communication. Then the Process of data transmission is 7 layer and each layer has perform specific tasks, OSI model ensures interoperability between different systems and protocols.

OSI introduce the 7 Layers by International Organation in 1984

Each layer has package of some protocal

• Physical Layer
• Data Link Layer
• Network Layer
• Transport Layer
• Session Layer
• Presentation Layer
• Application Layer

Appllication layer

• It’s used by network Application
• Netwaork Application that mean’s computer application that used Internet (Like.,Chrome , Firefox,etc..)
• Protocols: HTTP,HTTPS, FTP, NFS, FMTP, DHCP, POP3, TELNET, IRC, These protocal used in various operations like File Transfer, Web Surfing, Emails, Virtual Terminal

Presentation Layer:

• Recive data from the Application Layer, This data contains character and numbers that convert in to machine understandable binary formate The Function of Prasentation layer Called Translation.
• The Presentation Layer can 3 basic function “Translation and Data Compression and Encryption/Decryption”