Which Protocol Data Unit (PDU) represents the data link layer PDU?

Which Protocol Data Unit (PDU) represents the data link layer PDU?
A . PDU1 – Signal
B. PDU2 – Frame
C. PDU3 – Packet
D. PDU4 – Segment

Answer: B

Explanation:

A frame is the data link layer PDU that encapsulates the network layer PDU (packet) with a header and a trailer that contain information such as source and destination MAC addresses, frame type, error detection, etc. A frame is transmitted over a physical medium such asEthernet, Wi-Fi, etc.

References: https://www.arubanetworks.com/techdocs/ArubaOS_86_Web_Help/Content/arubaos-solutions/1-ov