Suppose you are downloading a huge file over a path consisting of three links with transmission rates of R1=20Mbps,R2=30Mbps,R3=50Mbps. What is the average throughput for the file transfer? 20Mbps 30Mbps 33.33 Mbps 50Mbps Question 8 2 pts You are accessing http://www.arizona.edu/ from your PC. Assuming there is no DNS cache available in you PC for this site. Your PC sends out DNS query to find out what? Ethernet address Server name TCP port number IP address.