Which unit best describes a frame, the basic capture element at the link layer?

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Multiple Choice

Which unit best describes a frame, the basic capture element at the link layer?

Explanation:
The main idea here is how data moves through the OSI/TCP-IP layers: each layer defines its own protocol data unit. At the data-link layer, the unit that is transmitted over the link is a frame. A frame carries the network-layer packet (usually an IP packet) as its payload and adds link-layer information such as MAC addresses and a trailer for error checking. Because of that structure, the frame is the appropriate description of the basic capture element at the link level. A packet describes the network layer, and a segment describes the transport layer, while a header is just part of the frame’s structure, not the overall data unit itself. So the best answer is the frame.

The main idea here is how data moves through the OSI/TCP-IP layers: each layer defines its own protocol data unit. At the data-link layer, the unit that is transmitted over the link is a frame. A frame carries the network-layer packet (usually an IP packet) as its payload and adds link-layer information such as MAC addresses and a trailer for error checking. Because of that structure, the frame is the appropriate description of the basic capture element at the link level. A packet describes the network layer, and a segment describes the transport layer, while a header is just part of the frame’s structure, not the overall data unit itself. So the best answer is the frame.

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