| Front | BitTorrent: Function |
| Back | -files into 256KB chunks - Torrent: group of peers who share the chunks of a file - Tracker: Server that manages participating peers - New peers receive a list of adjacent peers from the tracker - Peers mostly charge up and down at the same time, thus exchanging chunks - The exchange partners can change constantly |
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| Front | Network Layer: Network Types (2) |
| Back | Datagram Network (packet-switched network) Connectionless communication Virtual-circuit Network Connection as "Virtual line" |
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| Front | TCP: Timeout Interval: DevRTT |
| Back | For each SampleRTT, the deviation from the mean value is calculated -> Exponentially smoothed mean value of the deviation DevRTT = (1 - b) * DevRTT + b * | SampleRTT - EstimatedRTT | (Typically b = 0.25) |
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