Which layer of the Open Systems Interconnect (OSI) model are the source and destination address for a datagram handled?

2 thoughts on “Which layer of the Open Systems Interconnect (OSI) model are the source and destination address for a datagram handled?”

1. Network Layer
   The Network Layer places its Layer 3 header in front of the received segment and this group becomes a packet (or a datagram). The Layer 3 header contains important fields, such as the logical address (IP address) of both the source and the destination device.
   Ans C is correct.

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2. Answer: A
   “The Layer 4: transport layer PDU is the segment or the datagram.”
   https://en.wikipedia.org/wiki/Protocol_data_unit

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