1. Suppose Alice want to download the latest updates to her favorite music library, which is being distributed as a torrent. Alice (i) finds the tracker information for the torrent on the website of the publisher, (ii) downloads the metainfo file and peer list from the tracker (via a web download), and (iii) initiates TCP connections to all of the peers from the peer list shared by the tracker. Discuss and list in detail the series of all application-layer and transport layer protocols that are used in each of these three steps.