Sorry, but we are not here to assist with classwork. You need to be willing to research these kinds of issues on your own or you are never going to make it through any IT classes. A simple Internet search on "nslookup" will reveal the details of the command along with examples.
That said, you also need to look into the limitations of being connected to a Domain -- which you claim you are. Because in that case, the hos Domain places restrictions on what you can do. Like the above, this is something you need to research and understand on your own.
***If my post helped, click the White thumbs-up symbol to say thanks***
***Please mark Accept As Solution if my post solved your problem***
I am a volunteer and I do not work for, nor represent, HP
Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".