December 2001
Intermediate to advanced
656 pages
27h 19m
English
Content preview from Networking Explained, 2nd Edition
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Chapter 5: Data Link Layer Concepts and IEEE Standards 185
start-stop flag, then we must alter the data set to guarantee the uniqueness of the start-stop
bit patterns. One way to do this employs a process known as bit stuffing. For example, sup-
pose a data set consists of the bit string 0111111001111101, and our start-stop flag is
01111110. Note that the data message includes one instance of our start-stop flag. We
implement bit stuffing by “stuffing” a 0-bit immediately after every fifth consecutive 1-bit
in the data stream. The receiving node “unstuffs” these 0-bits by deleting every 0-bit that
follows five consecutive 1-bits. We illustrate bit stuffing ...
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