6.2 Error detection and correction

6.2 Error detection and correction
Video presentation: Computer Networks and the InternetError detection and correction. Forward error correction. Cyclic Redundancy Check (CRC)
Computer networks class. Jim Kurose Textbook reading: Section 6.2 , Computer Networking: a Top-Down Approach (8th edition), J.F. Kurose, K.W. Ross, Pearson, 2020. See gaia.cs.umass.edu/kurose_ross for more open student resources.

[@shourayduggal9461]

error in 2D parity example, shouldn't the parity bit for the first column be 0?

[@AlexGnok]

indeed

[@jaeshin6200]

Thank god for this correction I thought I was going mad.

[@swapneil5549]

yes, it should be. The slide gives a wrong examples but the textbook has that first bit as 0 rather than 1.

[@ReadingKing1]

good, i thought i'm stupid as i can't understand parity

[@ricp]

Thank you... I was wondering the same thing

[@peterlam193]

There is an error on 2-D parity example. the first column must be 0.

[@shadowsfrost1]

Actually quite liked this one. Those error checkings are pretty cool

[@yhx6736]

Vedio is very good. I really hope that the professor can update the contents of chapters 6-8, although as mentioned on the official website of the book, chapters 7-8 of most computer network courses may only be introductory.

[@katemuindi2242]

Awww you seem so nice! Thankyou for the well explained video

[@ServitorSkull]

For the CRC, what is little r?

[@cledybecerra654]

In the no errors 2d parity example I think there's an error, ironically. The parity bit for the first column must be 0.

[@SaanviKatti]

Yes.. Even I think its typo error

[@ahmed79muhsen]

is the calculation of R correct at 8:10?1010-1001? isn't that supposed to be 0001?

[@prathampekamwar8751]

This is binary division, which is xor, so it is correct

[@bubblegum5793]

He says "we're using additional bits" around that time stamp before he does the calculation

[@devmahad]

CRC is cool

[@naturestudy9084]

4:02 The column parity is 00101 --error in column parity
Erroro Correction: 00101 ----result

[@_Who_u_are]

Dear Sir, Theorical analysis is not good in Your slide... please reduce the slide number and increase the understandability of theory...

[@klevisimeri607]

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