Need Answer to this Questions please. My Telnet isn't working

Consider the following HTTP request commands: telnet cis.poly.edu 80 GET/~ross/ HTTP/1.1 Host: cis.poly.edu (or replace telnet with nc-c-t on new macs) 1. 2. 3. 4. Is this case-sensitive? What happens if you dom't use this case for the GET? Or for the HTTP? Or for the Host? 5. How do you the lehman.edu webpage? (To get back to the command prompt, press Ctrl+c if necessary.) 6. What happens if you leave out the Host line? (Why?) 7. What happens if you put the wrong thing in the Host line (i.e., a host different from the one you telnetted to)? (Why?)