Layers of OSI and explain in detail on packet level.

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Accepted Answer

The OSI model consists of 7 layers that define the functions of a network. Each layer has specific responsibilities in handling data packets.

Physical Layer: Deals with physical connections and transmission of raw data bits.
Data Link Layer: Manages data frames and error detection/correction.
Network Layer: Handles routing and logical addressing.
Transport Layer: Ensures reliable data transfer between devices.
Session Layer: Manages sessions between applications.
Presentation Layer: Translates data into a format that applications can understand.
Application Layer: Provides network services to applications.
Example: When sending an email, the application layer formats the message, the transport layer ensures it reaches the recipient reliably, and the physical layer transmits the data as electrical signals.

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