Explanation:
In the context of data link layer frames (especially in protocols like HDLC or sliding window protocols), the typical fields in a frame include:
- kind – indicates the type of frame (e.g., data, acknowledgment).
- seq – the sequence number of the frame.
- info – contains the actual data (payload).
header is not a field within the frame; rather, it is a section of the frame that may contain several fields (like kind, seq, etc.). So, header is a general term, not a specific field.
Therefore, the correct answer is: (C) header.
Explanation by: Mr. Dubey
In the context of data link layer frames (especially in protocols like HDLC or sliding window protocols), the typical fields in a frame include:
- kind – indicates the type of frame (e.g., data, acknowledgment).
- seq – the sequence number of the frame.
- info – contains the actual data (payload).
header is not a field within the frame; rather, it is a section of the frame that may contain several fields (like kind, seq, etc.). So, header is a general term, not a specific field.
Therefore, the correct answer is: (C) header.