35. Describe how the peer-to-peer architecture differs from the client-server paradigm. What benefits does a peer-to-peer approach have compared to the client-server approach, and what drawbacks does it have? [6 marks] 36. Suppose a friend is writing an Internet application for peer-to-peer file transfers and wants to encourage sharing. You suggest the "tit-for-tat" approach used by BitTorrent, but your friend hasn't heard of it before. Explain how this approach works and highlight how it encourages sharing. [6 marks] 7. Suppose you work for a large company, and you want to increase performance to accessing web sites for as little cost as possible. Which would you recommend: increasing the amount of bandwidth on the corporate access link, or installing a proxy server web cache? Why? Would the web site access patterns of corporate users affect your decision? Why? [ 6 marks]