Presentation layer OSI reference model ka chhatha layer hai, jo Session layer ke upar hota hai. Is layer ka mukhya uddeshya data ko application layer ke liye sahi tarike se interpret aur represent karna hota hai. Presentation layer data encoding, encryption, compression, aur data format conversions jaise functionalities ko provide karta hai.
और Layers के बारे मे भी जानें :-
- Physical layer in computer network in hindi
- Data Link layer in computer network in hindi
- Network layer in computer network in hindi
- Transport layer in computer network in hindi
- Session layer in computer network in hindi
- Application layer in computer network in hindi
Presentation layer in computer network in hindi
Yahan kuch important points hain jo Presentation layer ke baare mein batate hain:
- Data Encryption and Decryption: Presentation layer data encryption aur decryption ko handle karta hai. Is layer mein data ko secure karna ke liye encryption algorithms, jaise AES (Advanced Encryption Standard) aur RSA (Rivest-Shamir-Adleman), ka istemal hota hai. Data transmission ke dauran, sender data ko encrypt karta hai aur receiver data ko decrypt karta hai.
- Data Compression: Presentation layer data compression ko handle karta hai. Is layer mein data ko kam space mein store aur transmit karne ke liye compression algorithms, jaise ZIP aur GZIP, ka istemal hota hai. Compression se data size reduce hota hai, jisse transmission speed aur network bandwidth mein improvement hoti hai.
- Data Formatting and Conversion: Presentation layer data formatting aur conversion ko manage karta hai. Is layer mein data ko application layer ke compatible format mein convert kiya jata hai. Different applications ke beech data exchange ke liye presentation layer data format transformations, jaise character encoding (ASCII, Unicode), image formats (JPEG, PNG), aur audio/video formats (MP3, MPEG), ko handle karta hai.
- Syntax and Semantics: Presentation layer data syntax aur semantics ko validate karta hai. Is layer mein data consistency aur correctness ko check karne ke liye syntax rules aur data validation techniques ka istemal hota hai. Presentation layer errors ko detect aur handle karta hai.
- Data Integrity: Presentation layer data integrity ko ensure karta hai. Isme data checksums aur error detection codes ka istemal hota hai, jisse data integrity verify ki ja sakti hai. Data integrity loss ke case mein presentation layer error recovery aur retransmission techniques ka istemal karke data integrity ko restore karta hai.
- Protocol Conversion: Presentation layer protocol conversion ko handle karta hai. Agar communication endpoints ke beech different protocols ka istemal ho raha hai, to presentation layer unko translate aur convert karta hai, jisse seamless communication ho sake.
Presentation layer, data representation, data encryption, data compression, data format conversions, aur data integrity ko handle karke application layer ke liye sahi tarike se data ko taiyar karta hai. Yeh layer application compatibility, data security, aur data efficiency ko improve karta hai.