Which layer of the OSI model is responsible for encryption?1.0 MarksApplication layerPresentation layerTransport layerSession layer

Step 1: Break Down the Problem

We need to identify which layer of the OSI model is primarily responsible for encryption.

Step 2: Relevant Concepts

In the OSI (Open Systems Interconnection) model, there are seven layers:

1. Application Layer
2. Presentation Layer
3. Session Layer
4. Transport Layer
5. Network Layer
6. Data Link Layer
7. Physical Layer

Step 3: Analysis and Detail

• Application Layer: This layer interacts with end-user applications. Encryption at this layer typically deals with data privacy for applications (e.g., email encryption).
• Presentation Layer: This layer is responsible for data formatting and encryption/decryption. It translates the data format from application layer to the network and vice versa. It’s often associated with the encryption of data before it is sent to the application layer.
• Session Layer: This layer manages sessions between applications, but its primary role is not encryption.
• Transport Layer: This layer is responsible for data transmission across the network, focusing on reliability and flow control, but it does not handle encryption.

Step 4: Verify and Summarize

The Presentation Layer is the correct layer that handles the formatting and encryption of data, separating it from how it is transmitted.

Final Answer

The correct answer is Presentation layer.