Week 13 Review Advanced Network Technologies Review School of Computer Science Dr. Wei Bao | Lecturer Protocol Stack › application: supporting network applications – FTP, SMTP, HTTP › transport: process-process data transfer – TCP, UDP › network: routing of datagrams from source to destination – IP, routing protocols › link: data transfer between neighboring network […]
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Week 4-transport layer Advanced Network Technologies Application layer Transport layer School of Computer Science Dr. Wei Bao| Lecturer Peer-to-Peer 2 Pure peer-to-peer model architecture › no always-on server › arbitrary end systems directly communicate › peers are intermittently connected and change IP addresses examples: – file distribution (BitTorrent) – Streaming (Zattoo, KanKan) – VoIP (Skype)
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Week 7-audio-video Advanced Network Technologies Multimedia 1/2 School of Computer Science Dr. Wei Bao| Lecturer Multimedia › Multimedia › Streaming stored video › Voice-over-IP › RTP/SIP Multimedia Multimedia networking: 3 application types › streaming, stored audio, video – streaming: can begin playout before downloading entire file – stored (at server): can transmit faster than audio/video
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Cookies & Privacy 1Copyright 2012-2021 Ellis Horowitz Overview • What is a Cookie? Basic Facts • Working with Cookies: Code & Demo • Cookie based Marketing • Cookies, Privacy & Legislation • Conclusion 2Copyright 2012-2021 Ellis Horowitz 3Copyright 2012-2021 Ellis Horowitz “Google has been bypassing the privacy settings of millions of people using Apple’s Safari
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© Ellis Horowitz Marco Papa 2006-2021 1 Web Services and REST Introduction • Web sites are normally accessed by a browser guided by a person • But we have seen that programs can also access a web site, return one or more pages, and scrape the site for information • Web Services is the idea
CS计算机代考程序代写 javascript dns Java IOS android © Ellis Horowitz Marco Papa 2006-2021 1 Read More »
Cookies & Privacy 1Copyright 2012-2021 Ellis Horowitz Overview • What is a Cookie? Basic Facts • Working with Cookies: Code & Demo • Cookie based Marketing • Cookies, Privacy & Legislation • Conclusion 2Copyright 2012-2021 Ellis Horowitz 3Copyright 2012-2021 Ellis Horowitz “Google has been bypassing the privacy settings of millions of people using Apple’s Safari
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© Ellis Horowitz Marco Papa 2006-2021 1 Web Services and REST Introduction • Web sites are normally accessed by a browser guided by a person • But we have seen that programs can also access a web site, return one or more pages, and scrape the site for information • Web Services is the idea
© Ellis Horowitz, Marco Papa 1999-2021 1 Lecture Secure Web Communication and Web Server Performance © Ellis Horowitz, Marco Papa 1999-2021 2 3 Diverse Topics for Today 1. Secure web communication – Public Key Cryptography – Public and private key encryption – Digital Certificates and Certifying Authorities – Secure Sockets Layer Protocol (SSL) and https
© Ellis Horowitz, Marco Papa 1999-2021 1 Lecture Secure Web Communication and Web Server Performance © Ellis Horowitz, Marco Papa 1999-2021 2 3 Diverse Topics for Today 1. Secure web communication – Public Key Cryptography – Public and private key encryption – Digital Certificates and Certifying Authorities – Secure Sockets Layer Protocol (SSL) and https
High Performance Web Sites Much of the material derives from Steve Souders (SpeedCurve) and Tenni Theurer (Visa), 2006 research at Yahoo! 1(C) 2009 – 2021 Ellis Horowitz and Marco Papa The Importance of Front-End Performance The graph shows the time taken to download an html file and various associated image files, JavaScript files, and CSS