LAB ASSIGNMENT 9 – Exploring Internet Addressing

 

Materials Needed:

 

Activity

Step 1: Three different kinds of addresses

  • Go to the DOS / Command prompt and use nslookup to determine the IP address of cs.ColumbusState.edu
  • What Class of IP address is this?
  • Now use nslookup to determine the host name of 192.132.89.173
  • What class of  IP address is 192.132.89.173?
  • Now use nslookup to determine the IP address of www.mit.edu
  • What Class of IP address is this?
  • Enter arp –a at the command prompt. What are the two different numbers?
  • Enter ipconfig at the command prompt. What did you discover?
  • Enter ipconfig –all at the command prompt. What did you discover?

Step 2: Exploring cyberspace

  • Use the  ping command to determine if the following computers are “alive”:
    • jaring.nmhu.edu
    • jaring2.ColumbusState.edu
  • Use the tracert command to determine the route to the following computers:
    • jaring.nmhu.edu
    • jaring2.ColumbusState.edu
    • www.jaring.my
    • www.waikato.ac.nz

 

Step 3: More about IP addresses

  • What is the binary of  168.26.193.21? (hint – each decimal number is 8 bits)
  • What is the decimal equivalent of the binary number found above? (hint – use the scientific calculator in Windows)
  • Enter the decimal number in your web browser. What page did you connect to?

 

Step 4: More TCP/IP utilities

  • Use the telnet program to connect to cs.ColumbusState.edu from the Command prompt. What happened?
  • Now telnet to cs.ColumbusState.edu at port 80 from the Command prompt. Press the enter key twice. What happened? Explain.
  • Now telnet to cs.ColumbusState.edu at port 80 from the Command prompt. Type

GET /defaultIE.asp HTTP/1.1 Press the enter key twice. What happened? Explain.