Peer to peer(p2 p)

Peer to Peer System(P2P) -Torrent

1. PEER TO PEER(P2P) What is a peer to peer network? What is a peer to peer network architecture? What are the advantages of peer to peer network? What is disadvantages of peer to peer network? What is a peer to peer file sharing? What is BitTorrent ? How BitTorrent works ? Problems with BitTorrent ?

2. What is a peer to peer network? In its simplest form, a  peer-to-peer  ( P2P )  network  is created when two or more PCs are connected and share resources without going through a separate server computer. In other words, each computer on a P2P network becomes a file server as well as a client. Used largely for sharing of content files such as audio, video, data or anything in a digital format. There are many p2p protocols such as Ares, Bittorrent , or eDonkey (eD2k).

3. What is a peer to peer network?

4. A PEER Peers are both suppliers and consumers while in the traditional client-server model, the server supplies while the client only consumes.

5. PEER-TO-PEER VS CLIENT-SERVER

6. What is a peer to peer network architecture? Overlay network diagram for an  unstructured P2P network , illustrating the ad hoc nature of the connections between nodes overlay network diagram for a  structured P2P network , using a distributed hash table (DHT) to identify and locate nodes/resources

7. Structured Vs. Unstructured Structured- In  structured peer-to-peer networks  the overlay is organized into a specific topology, and the protocol ensures that any node can efficiently search the network for a file/resource, even if the resource is extremely rare. Connections in the overlay are fixed DHT Indexing(distributed hash table). Unstructured- No algorithm for organization. Connections in the overlay are created arbitrarily.

8. What are the advantages of peer to peer network? The peer to peer network is less expensive. One of the major advantage to P2P network is that each time a new node is connected to the network the total capacity of the system increases. Failure of one peer doesn’t affect the functioning of other peers. In case of Client –Server network, if server goes down whole network gets affected. it is easy to install and configure.

9. What is disadvantages of peer to peer network? Security is a major concern, not all shared files are from benign sources. Attackers may add malware to p2p files as an attempt to take control of other nodes in the network. Data recovery or backup is very difficult. Each computer should have its own back-up system.  Copyright issues.

10. What is a peer to peer file sharing? Peer-to-peer file sharing is different from traditional file downloading. In peer-to-peer sharing, you use a software program (rather than your Web browser) to locate computers that have the file you want. Because these are ordinary computers like yours, as opposed to servers, they are called  peers . You run peer-to-peer file-sharing software on your computer and send out a request for the file you want to download. To locate the file, the software queries other computers that are connected to the Internet and running the file-sharing software. When the software finds a computer that has the file you want on its hard drive, the download begin

11. What is BitTorrent ? a peer-to-peer file sharing protocol used for distributing large amounts of data. Invented By Bram Cohen. Released July 2001 It is now maintained by Cohen's company, BitTorrent Inc.

12. How BitTorrent works ? Seeds:   Seeder  is someone from whom you can download a piece of file. Hence they affect the overall availability of file on P2P network. Peers: Peer   is someone who is involved in file sharing activity. It is a generic term. Leecher : Leecher  is someone who has downloaded a file but is not sharing it back to P2P network. Hence, overall availablity of file decreases.

13. Problems with BitTorrent ? Copyright:     - Many things not legally distributed     - Movie and Music industries very mad     - Unsuspecting users targeted        for lawsuits. Security: - virus,SET attack

14. Thank you