- 2069 Chaitra · 2 marks
Tasks done at OSI layers (set 2)
Short answer
Timing and voltage of a received signal belong to the physical layer, encryption and decryption to the presentation layer, data framing to the data link layer, and point-to-point socket connection to the transport layer.
Mention in which level of the layer of the OSI reference model the following tasks are done: i) Timing and voltage of received signal ii) Encryption and decryption of data iii) Data framing iv) Point-to-point connection of socket.
| Task | OSI layer |
|---|---|
| i) Timing and voltage of received signal | Physical layer |
| ii) Encryption and decryption of data | Presentation layer |
| iii) Data framing | Data link layer |
| iv) Point-to-point connection of socket | Transport layer (port and socket address) |
The physical layer defines bit duration and voltage levels. The data link layer groups bits into frames. Sockets (IP address plus port number) identify end-to-end process connections at the transport layer.
✓ Answer checked by Claude Opus 5.5 (high effort)
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