Answer:
All of the above.
Explanation:
You shouldn't be doing any of these things using your employer's computer networks, even if there aren't any explicit rules against them. For one thing, your usage of company systems and networks is being continuously monitored, so you can forget about trying to get away with it. Checking social media and surfing the internet can expose parts of your personal life that you don't want anyone else to see, and downloading anything from anywhere is dangerous, especially if you're pirating music from some backwater site where adult sites and survey scams are waiting to bombard the whole network with pop-up ads. You should always do these things on your personal devices while connected to your personal home network.
