The term packet is used fairly generically to refer to protocol data unit (PDU). There are PDU equivalent names in the different OSI layers. What is the name of the unit in the physical layer of the OSI reference model

Bits

Explanation:

The protocol data unit is the representative unit of data in the OSI layer of a network. The OSI system has seven layers.

The physical layer is the first layer of the system and the protocol data unit is represented as bits of data.

Note that the term packet is the PDU for data in the network layer of the OSI network system.

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