Java

TOPIC 20 – INTRO TO NETWORKING

LESSON WORK

QUESTION #1

Short answer questions

a) What does IP stand for? Use the internet if it is necessary.

b) Which DOS command do you use to find your computer’s IP address?

c) Which DOS command do you use to find your computer’s host name?

d) Which DOS command would you use to check connectivity with a computer named coco that is on your network?

e) What is the IP address of your computer right now?

f) What is the host name of your computer right now?

QUESTION #2

Get the IP address and the host name of a computer near you. Ask your neighbour. Ping that computer to see that the connectivity is working.

QUESTION #3

Run the code in the full example of the lesson note. Pick either option.

QUESTION #4 (TIME PERMITTING - MAX OF 1 PERIOD FOR THIS LESSON)

You can also create an InetAddress object representing another computer’s IP address. You can do this fairly easily if you know that computer’s host name. Use the Java documentation to do this.

Are you able to figure out how to do it with the computer’s IP address? Unfortunately, it requires that you work with a byte array.