The
Presentation Layer is the 6th layer of the
OSI (Open Systems Interconnection) Model. Its main job is to make sure the data sent from one system can be understood by another, even if their data formats are different.
Key functions of the Presentation Layer include:
- Data encryption and decryption: It secures data by encrypting it before sending and decrypting it on receiving, ensuring privacy and safety.
- Data compression: It reduces the size of the data to improve transmission speed and reduce bandwidth usage.
- Data translation: It translates data between different formats, such as from EBCDIC to ASCII or between different character sets, so that different systems can communicate properly.
Important Note:
- This layer works as a translator between the Application Layer (Layer 7) and the Session Layer (Layer 5).
- It ensures the data is in a readable and usable format for the receiving application.
Conclusion: The correct answer is Data encryption, compression, and translation. These are the main roles of the Presentation Layer in the OSI model.
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