Homework 15

Details

1. (4) The subnet mask on FerzleCorp's network is 255.255.224.0. Given this, how many IP addresses are available on the their domain? Show all of your calculations and explain how what you computed leads to your answer. (Hint: What is the 32-bit string representation of the subnet mask, and what does that have to do with anything?)
2. (4) Suppose you try to access the KnowHope home page using the URL http://www.hope.edu/knowhope, and get a message from your web browser that the server cannot be contacted. You happen to know that the IP address for www.hope.edu is 208.67.222.222, so you try http://208.67.222.222/knowhope, and to your surprise, it works. Clearly there is a problem somewhere on the network. Where is the problem? Explain your answer. (This question is not about network layers!)
3. (6) The base network address for computers at Despair University is 198.110.96.0, and the subnet mask is 255.255.240.0. Given this, which of the following IPs addresses are on Despair University's network? Show your calculations and explain how they yield your answers.
   1. 198.110.98.147
   2. 198.110.112.45
   3. 198.121.98.6