DATA LINK LAYER WIRED NETWORKS
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which category of HDLC frames undergoes error and flow control mechanisms by comprising send and receive sequence numbers?
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U-frames
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I-frames
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S-frames
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All of the above
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Explanation:
Detailed explanation-1: -Information (I) frame: I-frames carry upper layer information and some control information. This frame sends and receives sequence numbers, and the poll nal (P/F) bit performs ow and error control. The send sequence number refers to the number of the frame to be sent next.
Detailed explanation-2: -Frame Check Sequence Field (FCS) FCS is a HDLCs error detection field. This field contains a 16 bit or 32-bit cyclic redundancy check bit.
Detailed explanation-3: -S-frames (control) Supervisory Frames, or ‘S-frames’, are used for flow and error control whenever piggybacking is impossible or inappropriate, such as when a station does not have data to send.
There is 1 question to complete.