msgid "" msgstr "" "Project-Id-Version: French (cnp3-ebook)\n" "Report-Msgid-Bugs-To: \n" "POT-Creation-Date: 2026-04-18 21:36+0200\n" "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n" "Last-Translator: FULL NAME \n" "Language-Team: French \n" "Language: fr\n" "MIME-Version: 1.0\n" "Content-Type: text/plain; charset=UTF-8\n" "Content-Transfer-Encoding: 8bit\n" "Plural-Forms: nplurals=2; plural=n > 1;\n" "X-Generator: Weblate 5.14.3\n" #: ../../exercises/reliability.rst:16 msgid "" "Transmission links have sometimes different upstream and downstream " "bandwidths. A typical example are access networks that use ADSL " "(Asymmetric Digital Subscriber Lines). Consider two hosts connected via an " "ADSL link having an upstream bandwidth of 1 Mbps and a downstream bandwidth " "of 50 Mbps. The propagation delay between the two hosts is 10 milliseconds. " "What is the maximum throughput, expressed in frames/second, that the " "alternating bit protocol can obtain on this link if each data frame has a " "length of 125 bytes and acknowledgments are 25 bytes long. Same question if " "the protocol is modified to support 1500 bytes long data frames." msgstr "" #: ../../exercises/reliability.rst:56 msgid "" "the Internet checksum used by UDP, TCP and other Internet protocols which is " "defined in :rfc:`1071` and implemented in various libraries." msgstr "" #: ../../exercises/reliability.rst:57 msgid "" "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." msgstr "" #: ../../exercises/reliability.rst:67 msgid "" "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." msgstr "" #: ../../exercises/reliability.rst:77 msgid "" "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" msgstr "" #: ../../exercises/reliability.rst:91 msgid "" "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." msgstr ""