BitTorrent is a peer-to-peer file sharing protocol that allows users to distribute data and electronic files over the Internet. It was created in 2001 by Bram Cohen as a way for people to efficiently distribute large amounts of data. Using BitTorrent, files can be downloaded from multiple users simultaneously, rather than from a single source. Common uses of BitTorrent include downloading movies, music, software, and other media files. While it provides advantages like high download speeds, it also enables illegal sharing of copyrighted content.

1. BIT TORRENT
S O N J A K R I S T I A N S E N
T E C H N O L O G Y
1 8 / 1 0 / 1 6

2. CONTENTS
• Terminology
• Definitions
• What is it?
• Bram Cohen
• How it works
• Torrent client software
• Uses
• Advantages
• Disadvantages

3. TERMINOLOGY
• Torrent
• Peer
• Leeches
• Seed
• Swarm
• Tracker
• Share ratio
• Choked
• Snubbed
• Interested

4. DEFINITIONS
• Torrent – the torrent is the file itself, but it is not the entire file and it is really small.
However, it contains the information that points to the actual file.
• Peer – users that exchange data using the BitTorrent protocol.
• Leecher – is a person that does not have the complete file yet, but is downloading it.
• Seed – A seeder is anyone who has a complete copy of a file.
• Swarm – Peers that share a torrent.

5. DEFINITIONS
• Tracker - a server of what seeds and peers are in a swarm. People can contact the
tracker and receive information about other people and they can connect.
• Share ratio – each user has a share ratio for each torrent, the number is determined by
dividing the amounts of data that user has uploaded and the amount they have
downloaded.
• Choked – a user that refuses to send file pieces.
• Snubbed – if a person has not received data over 60 seconds, the person who
uploaded the file is displayed as snubbed.
• Interested – user that wants to obtain parts of a file another user has.

6. WHAT IS IT?
• Bit torrent is a system that is used to transfer and
download files peer to peer.
• It is one of the most common file sharing technology
used today
• The purpose of BitTorrent is to quickly replicate one
large file to the person who's downloading it.
• BitTorrent was originally created by American
programmer Bram Cohen, but it is now maintained
by BitTorrent Inc.

7. BRAM COHEN
• Bit torrent was created in 2001 by programmer
Bram Cohen.
• Bram Cohen was the son of a computer scientist
and he learnt the basics of programming at the age
of five.
• Cohen dropped out of college to work for companies in
the late 90s, one of the projects he worked on was
called MojoNation.
• MojoNation was where Cohen got the idea of
Bit torrent from.

8. HOW IT WORKS
• When you download a file from bit torrent, it will start downloading from all the computers
that have that same file, and the more people that have that file the faster the downloading
process will be.
• Before you start downloading torrents, you will first need to download UTorrent.
• The provider of the file makes the file available on the network.
• People then make a request for the file and download it.
• People get parts of the file and make those parts available to download for other people to
download while the rest of the file is still downloading.
• Once the person has all the parts of the file, it becomes a seed.
• As mentioned earlier a seeder, is anyone that has a complete copy of a file

9. HOW IT WORKS

10. TORRENT CLIENT
SOFTWARE
• The software controls operations such as:
• It reads information contents in torrent files
• After reading the files, it sends a message
to the tracker of a list of peers
• It then connects to peers
• It keeps all records of the files it receives.

11. USES
• Bit torrent is used to download and transfer files among a network of people.
• You can upload files that you want other people to see.
• You can also download files that have been uploaded by others.

12. ADVANTAGES
• It is easy to use
• It is free as long as you don’t mind getting DMCA notices,
or other people seeing your IP address.
• Downloading files from bit torrent is very fast
• No more barely functional torrents.
• BitTorents can be downloaded using any BitTorrent app

13. DISADVANTAGES
• People can upload and download illegal/copyrighted files.
• There is very limited device support, meaning other devices
other than windows, are out of luck.
• Store is badly organized.
• You can not download torrents securely without paying for
VPN, seed box or any other kind of premium service.

14. CONCLUSION
• To conclude, BitTorrent is a great way to download and upload files, however these
days it is mostly used to upload and download copy righted material such as movies
and TV shows. I think that is wrong and it is illegal, people should just upload their
own content instead of copyrighted material. I highly recommend using BitTorrent as
long as you don’t do anything wrong and you follow the protocol.

15. THANK YOU
FOR YOUR
ATTENTION

16. WORKS CITED
• "BitTorrent." What Is ? Webopedia Definition. N.p., n.d. Web. 22 Oct. 2016.
<http://www.webopedia.com/TERM/B/BitTorrent.html>.
• "Comparing the Pros and Cons of Usenet with Torrents." Usenet Vs Torrents. N.p., n.d.
Web. 22 Oct. 2016. <http://www.usenet-vs-torrents.com/comparing-the-pros-and-
cons-of-usenet-with-torrents/>.
• "BitTorrent 7.9.6.42179." BitTorrent. N.p., n.d. Web. 22 Oct. 2016.
<http://www.filefacts.com/bittorrent-info>.
• "What Is BitTorrent? - Definition from WhatIs.com." WhatIs.com. Margaret Rouse, Apr.
2009. Web. 22 Oct. 2016. <http://whatis.techtarget.com/definition/BitTorrent>.
• Pash, Adam. "A Beginner's Guide to BitTorrent." Lifehacker. N.p., 03 Aug. 2007. Web. 22
Oct. 2016. <http://lifehacker.com/285489/a-beginners-guide-to-bittorrent>.