For the purposes of this question, we will be working with ipv4. For the IP address 10.96.128.0/20, (Network ID is 10.96.128.0 and Subnet Mask is 20, please watch this video need to see a few examples: https://www.youtube.com/watch?v=XQ3T14SIIV4) < is < you (a) how many usable hosts are there, < -> < < (b) what is the range of IP addresses for those usable hosts, and < (c) what is the broadcast IP address? (You must show all of your work to receive any credit) < < W (15pts) What are 3 examples of Voice Over IP (VOIP) software? What application layer (VOIP) protocols do they each use? (you may need to do some online research) Include references (URL) for your answers.