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Same question as above, but assume now that both the sender and the receiver implement selective repeat. Note that the answer can be different from the above question.
6 years ago
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Is it possible for a selective-repeat receiver to inter-operate with a go-back-n sender ? Justify your answer.
6 years ago
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Is it possible for a go-back-n receiver to inter-operate with a selective-repeat sender ? Justify your answer.
6 years ago
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hundred frames
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ten frames
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one frame
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Consider two high-end servers connected back-to-back by using a 10 Gbps interface. If the delay between the two servers is one millisecond, what is the throughput that can be achieved by a reliable protocol that is using 10,000 bits frames and a window of
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Discussion questions
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Implement a small software that computes the CRC-32 for a text file. Then, modify the contents of the file to change an even number of bits or an odd number of bits inside the file. When modifying the file, remember that an ASCII file is composed of 8 bits characters that are encoded by using the ASCII table that you can find at : http://en.wikipedia.org/wiki/ASCII . You can also write a small program that produces binary files that are a small variation of each other.
6 years ago
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all errors that affect a sequence of bits which is shorter than the length of the CRC
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all errors that affect an odd number of bits
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The Cyclic Redundancy Checks (CRCs) are efficient error detection codes that are able to detect :
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the 16 bits or the 32 bits Cyclical Redundancy Checks (CRC) that are often used on disks, in zip archives and in datalink layer protocols. See http://rosettacode.org/wiki/CRC-32 for CRC-32 implementations in various languages.
6 years ago

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