This is quite a simple question to ask, hopefully the answer is as straight forward! Can you use a Content Query Webpart on Site Collection A to read data from Site Collection B?
If it's not supports right out of the box, are there some configuration options which you can use to make it happen?
Thanks.
No configuration option will enable you to have a cross site content query webpart.
You can either create a custom web part that will do it or buy one (several options out there, here is one
If you decide to create your own web part, you will easily find code online that will help you. Here is an example.