# URL ICE

- Visit http://math.wsu.edu
- Visit http://www.sci.wsu.edu/math. What do you notice?
- Visit http://www.math.wsu.edu:80. Does this look familiar?
- Visit http://www.math.wsu.edu:81.
- Visit http://134.121.45.19 and http://134.121.45.19/math . Obviously, we have just found several ways to contact the same computer, with different sites according to how we specify the URL.
- Find the name of the computer 134.121.45.19.
- Find the IP address of www.sci.wsu.edu.
- Visit http://math.wsu.edu/~kcooper What is the ~ about?
- Visit portal.wsu.edu:443 What is the 443 about?
- Visit https://www.grc.com/x/ne.dll?bh0bkyd2 What is the ? about? How about the https?
- Visit ftp://ftp.wsu.edu. How does ftp differ from http? Try ftp://www.sci.wsu.edu.

Assignment 6 is posted.

The midterm exam will take place Monday, 16 October. As with all
exams, all paper notes may be used, but no electronic devices
are permitted. There is a sample exam
available.