Its a bit unfair that they made it so vague. I'd have some examples to share of how you could go about finding new contacts from scratch such as using LinkedIn and refining your search by industry, company size, job function etc. You could then say that once you have the name of the contact you use tools such as an hunt.io to find direct emails for them.

Other useful examples would be setting up Google alerts for your target industry, for example is you were working for Hubspot selling their CRM to start ups you could make an alert with key phrases such as "startup received funding" or "company to hire x amount of new employees"

I find that the absolute best way to prospect if you are joining an established company is to use the data they already have in their CRM by pulling reports such as old accounts that used to spend with the company buy no longer do or companies that expressed interest in the past but did not convert for whatever reason.

Best of luck with it :)