Some network apps ■social networking voice over IP (e.g.,Skype) Web real-time video conferencing ■text messaging ■Internet search ■e-mail remote login multi-user network games streaming stored video (YouTube,Hulu,Netflix) ■P2 P file sharing Q:your favorites? Application Layer:2-4Some network apps ▪ social networking ▪ Web ▪ text messaging ▪ e-mail ▪ multi-user network games ▪ streaming stored video (YouTube, Hulu, Netflix) ▪ P2P file sharing Application Layer: 2-4 ▪ voice over IP (e.g., Skype) ▪ real-time video conferencing ▪ Internet search ▪ remote login ▪ … Q: your favorites?