What is the PDU at Layer 3 called A Data B Segment C Packet

What is the PDU at Layer 3 called?

A. Data

B. Segment

C. Packet

D. Frame

E. Bit

Solution

C is correct. Packet is the PDU at the Network layer.

A, B, D, and E are incorrect. A is incorrect because the data is the PDU for the top three layers. B is incorrect because the Layer 4 PDU is called a segment. D is incorrect because the frame is the PDU for the Data Link layer. E is incorrect because the bit is the PDU for the Physical layer.