What is the general term that is used to describe a piece of data at any layer of a networking model?
- segment
- packet
- frame
- protocol data unit
| Explanation & Hint:
The term protocol data unit (PDU) is used to describe a piece of data at any layer of a networking model. A packet is the PDU at the network layer. A frame is the data link layer PDU. A segment is the PDU at the transport layer. |