Networking ConceptsQuestion 2 of 100
A network administrator needs to identify the protocol data unit (PDU) used at the Transport layer of the OSI model. Which term applies?
a.Frame
b.Segment
c.Packet
d.Bit
Explanation
At the Transport layer the PDU is called a segment (or datagram for UDP). Packets exist at the Network layer, frames at the Data Link layer, and bits at the Physical layer. Knowing PDU names per layer helps when interpreting protocol behavior.
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