Link-Layer Services, Error-Detection, FEC - Link Layer | Computer Networks Ep. 6.1 | Kurose & Ross
ฝัง
- เผยแพร่เมื่อ 5 มิ.ย. 2024
- Answering the question: "What does the link-layer do?" Discusses link-layer services, error-detection, and error-correction schemes, including CRC.
Based on Computer Networking: A Top-Down Approach 8th edition, Chapter 6, Sections 1 and 2.
Slides are copyright 1996-2020 J.F. Kurose, K.W. Ross All Rights Reserved., and freely available here: gaia.cs.umass.edu/kurose_ross...
Background music: www.epidemicsound.com/referra... - วิทยาศาสตร์และเทคโนโลยี
In the “no errors” two-dimensional bit parity check appearing @10:45, shouldnt the lower left bit (i.e. the one in the d4,1 position) be zero, since there are already two 1-bit entries above it?
Sir can you please explain how two-dimensional bit parity understands which bit is flipped? For any block if a bit is flipped it will come both in row and column...then how will receiver understand which bit got flipped?
The receiver will check the parity on each row and column, and find that the parity doesn't match on one row and one column. Since that row and column only intersect at a single bit, then the receive will know that is the bit that was flipped.
How about vid 6.2