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On which layer of the OSI model does a 'repeater' operate?
Explanation
A repeater operates at the Physical Layer (Layer 1) of the Open Systems Interconnection (OSI) model. Its primary function is to receive a signal from a network medium, regenerate or amplify it, and retransmit it. This allows the signal to travel longer distances without degradation (attenuation).
- Physical Layer (Layer 1): Deals with bit-level transmission and hardware like repeaters, hubs, and cables.
- Data Link Layer (Layer 2): Uses MAC addresses; devices include switches and bridges.
- Network Layer (Layer 3): Uses IP addresses for routing; devices include routers.
- Presentation Layer (Layer 6): Manages data encryption, compression, and formatting.
Since a repeater does not inspect MAC or IP addresses and simply works with the raw physical signal, it is classified as a Layer 1 device.
SIMILAR QUESTIONS
Which OSI layer is not part of TCP/IP model?
Which one of the following protocols is not an application layer of the TCP/IP model?
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Which one of the following is not a network topology ?