Consider an Internet video streaming scenario, where the server encodes the video programme at constant bitrate and transmits it to the client using the RTP/UDP/IP protocol. The video is compressed at a rate of 480 Kbit/s by the encoder. Each data packet (involving compressed video stream) that is created and pushed to the network is 1000 bytes in length. Consider that the header lengths of RTP packet, UDP packet, and IP packet as 12 bytes, 8 bytes, and 20 bytes, respectively. Assume that the transmission network is prone to errors. On average, 5 IP packets are distorted in every 100 IP packets sent to the client. In other words, the packet loss rate is 5%. There are no packet re-transmissions. i. How many packets are generated by the video encoder every second? ii. iii. [6%] Calculate the total bitrate on the network in Kbit/s. Note that the total bitrate includes not just the compressed video, but also the headers associated with the protocols and packaging. (1 Kbit = 1000 bits; 1 byte = 8 bits) [6%] Describe why there are no re-transmissions in the service. What would you do if you wanted the video streaming service to allow packet re-transmissions when necessary, and what would be the potential disadvantage of doing so? [12%]