APPLICATION LAYER
PEER TO PEER PARADIGM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Rarest Piece First
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End Game Mode
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Strict Priority
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Random First Piece
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Detailed explanation-1: -Once the BitTorrent client requests a sub-piece of a piece, any remaining sub-pieces of that piece are requested before any sub-pieces from other pieces.
Detailed explanation-2: -Rarest-first piece selection strategy ensures only “new” pieces (that are with no other leechers) are downloaded from the seeder. We get a quick distribution of pieces in the network and a reduced load on the seeder.
Detailed explanation-3: -Typically, BitTorrent uses TCP as its transport protocol for exchanging pieces, and it uses HTTP for tracker comms. The well known TCP port for BitTorrent traffic is 6881-6889 (and 6969 for the tracker port). The DHT extension (peer-to-peer tracker) uses various UDP ports negotiated by the peers.
Detailed explanation-4: -So how do you resume file downloads that you have skipped in uTorrent? Simple: you right-click the files and select a priority for them. Just select normal, high or low to resume the download. Please note that current versions of uTorrent do not refresh the download rate at all for skipped and then resumed downloads.